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Our Publications

Cyclic Secondary Amine Functionalized Perylene Diimide Polymers for Solution Processed Electrochromic Devices

Irene E. ParkAnderson HoffCatherine BeaumontBenjamin S. GelfandRichard D Pettipas, Gregory C. Welch  

Journal of Materials Chemistry C

All Slot-Die Coated Organic Solar Cells using an Amine Processed Cathode Interlayer based upon an Amino Acid Functionalised Perylene Bisimide

Rebecca E Ginesi, Rizwan Niazi, Gregory C. Welch, Emily R. Draper  

RSC Applied Interfaces

Thermally-Induced Degradation in PM6:Y6-Based Bulk Heterojunction Organic Solar Cells

Shahidul Alam, Haya Aldosari, Christopher E. Petoukhoff, Xinyu Jiang, Tomáš Váry, Wejdan Althobaiti, Maryam Alqurashi, Hua Tang, Jafar I. Khan, Vojtech Nádaždy, Peter Müller-Buschbaum, Gregory C. Welch, Frédéric Laquai

Advanced Functional Materials

Water-Processable Self-Doped Hole Injection Layer for Large-Area, Air-Processed, Slot-Die Coated Flexible Organic Light Emitting Diodes

Akpeko Gasonoo, Catherine Beaumont, Anderson Hoff, Chaochen Xu, Philip Egberts, Majid Pahlevani, Mario Leclerc, Gregory C. Welch

Chemistry of Materials - Special Issue

A Series of Perylene Diimide Cathode Interlayer Materials for Green Solvent Processing in Conventional Organic Photovoltaics

Kathryn M. Wolfe, Shahidul Alam, Eva German, Fahad N. Alduayji, Maryam Alqurashi, Frédéric Laquai, Gregory C. Welch

Beilstein Journal of Organic Chemistry - Special Issue

A Fluorinated Perylene Diimide for Polar and Non-Polar Green Solvent Processed Organic Photovoltaic Cathode Interlayers

Colton Atkinson, Muhammad Rizwan Niazi, Gregory C. Welch

RSC Applied Interfaces

Biogenic Amine Sensors Using Organic π-Conjugated Materials as Active Sensing Components and Their Commercialization Potential

Michael J. Grant, Kathryn M. Wolfe, Cayley R. Harding, Gregory C. Welch

Journal of Materials Chemistry C - Special Issue

New Generation of Benzidine Wide-Gap Conjugated Materials: Solution Processing a Classic Evaporated Scaffold

Pablo Simón Marqués, Akpeko Gasonoo, Kathryn Wolfe, Shining Chang, Gregory Charles Welch

Chemistry A European Journal

Road Map on Energy Harvesting Materials - Organic Photovoltaics for Indoor Light to Electricity Conversion 

Gregory C. Welch, Bryon W. Larson, Myles Creran, Audrey Laventure

JPhys Materials - Special Issue

N-annulated Perylene Diimide Non-fullerene Acceptors for Organic Photovoltaics

Mahmoud Farahat, Gregory C. Welch

Colorants - Special Issue

A Graphene-like N-annulated Perylene Diimide Dimer Compound for Highly Efficient Electrochemiluminescence

Xiaoli Qin, Liuqing Yang, Ziying Zhan, Edward Cieplechowicz, Kenneth Chu, Congyang Zhang, Sara Jahanghiri, Gregory C. Welch, Zhifeng Ding

Electrochimica Acta

Room-Temperature Photodeposited Amorphous VOx Hole-Transport Layers for Organic Devices

Renaud Miclette Lamarche, Akpeko Gasonoo, Anderson Hoff, Roman Chernikov Gregory C. Welch, Simon Trudel

Chemistry of Materials

Miscibility Driven Morphology Modulation in Ternary Solar Cells

Ting Yu, Francesco Tintori, Yuchen Zhang, Wanting He, Edward Cieplechowicz, Raja Sekhar Bobba, Poojan Indrajeet Kaswekar, Maziar Jafari, Yuxuan Che, Yong Wang, Mohamed Siaj, Ricardo Izquierdo, Dmytro F. Perepichka, Quinn Qiao, Gregory C. Welch, Dongling Ma

Journal of Materials Chemistry A

N-Annulation of the BTI Rylene Imide Organic Building Block: Impact on the Optoelectronic Properties of π-Extended Molecular Structures

José María Andrés Castán, Sana Abidi, Tatiana Ghanem, Saad Touihri, Philippe Blanchard, Gregory C. Welch, Yulian Zagranyarski, Julien Boixel, Bright Walker, Pierre Josse, Clément Cabanetos

Colorants - Special Issue

Systematic Investigation of Core and Endcap Selection on the Development of Functional π-Conjugated Materials

Josh D. B. Koenig, Anderson Hof, Akpeko Gasonoo, Gregory C. Welch

Chemistry of Materials

Scalable Non-Halogenated Co-solvent System for Large-Area, Four-Layer Slot-Die-Coated Organic Photovoltaics

Muhammad Rizwan Niazi, Rahim Munir, Renita M. D’Souza, Timothy L. Kelly, Gregory C. Welch

ACS Applied Materials and Interfaces

Layer-by-Layer Processed Organic Photovoltaic Cells Using Slot-Die-Coating Methods and Non-halogenated Solvents under Ambient Conditions with PCE of 10%

Advanced Materials Interfaces

Pandeng LiAnderson HoffAkpeko GasonooMuhammad R. NiaziMaryam NazariGregory C. Welch

An N-Annulated Perylene Butyl Tetraester for Alcohol Processed Semiconducting Organic Thin Films

Flexible and Printed Electronics - Special Issue

Kathryn Wolfe, Madison Mooney, Chloe Crep, Simon Rondeau-Gagne, Gregory C. Welch

Sidechain Engineered N-PDIs Processed from Ethyl Acetate as Effective Cathode Interlayers for Organic Solar Cells

Advanced Engineering Materials

Anderson Hoff, Mark Martell, Akpeko Gasonoo, Josh D. B. Koenig, Pablo Simón Marqués, Edward Cieplechowicz, Majid Pahlevani, Gregory C. Welch

Boosting CO2-to-CO Evolution Using a Bimetallic Diketopyrrolopyrrole Tethered Rhenium Bipyridine Catalyst

Catalysis Science & Technology

Cody R. Carr, Josh D. B. Koenig, Michael J. Grant, Warren E. Piers, Gregory C. Welch

AzaBenzannulated Perylene Diimide Multimers as Electron Acceptors for Organic Solar Cells

Materials Chemistry Frontiers

Aline Makhloutah, Anderson Hoff, Antoine Goujon, Gregory C. Welch, Pietrick Hudhomme 

An Alcohol Soluble N-Annulated Perylene Diimide Cathode Interlayer for Air-processed, Slot-Die Coated Organic Photovoltaic Devices and Large Area Modules

Solar RRL

Anderson Hoff, Akpeko Gasonoo, Majid Pahlevani, Gregory C. Welch

New Perylene Diimide Ink for Interlayer Formation in Air-Processed Conventional Organic Photovoltaic Devices

ACS Applied Materials and Interfaces

Mahmoud E. Farahat, Michael A. Anderson, Mark Martell, Erin L. Ratcliff, Gregory C. Welch

Cellulose Nanocrystals-Tin Oxide Hybrid Electron Transport Layers for Solar Energy Conversion

Advanced Materials Interfaces

Muhammad Rizwan NiaziHeng ZhaoRenaud Miclette LamarcheRahim MunirSimon TrudelJinguang HuGregory C. Welch

Thiochromenocarbazole Imide: A New Organic Dye with First Utility in Large Area Flexible Electroluminescent Devices

Materials Chemistry Frontiers

José María Andrés Castán, Amruth C, Pierre Josse, Laura Abad Galan, Pablo Simón Marqués, Magali Allain, Olivier Maury, Tangui Le Bahers, Philippe Blanchard, Cyrille Monnereau, Gregory C. Welch, Clément Cabanetos

Development of Tetrameric N-Annulated Perylene Diimides Using “Click” Chemistry

ChemSusChem

Josh D. B. Koenig, Mahmoud E. Farahat, Gregory C. Welch

Introduction to Organic Electronics – Ecofriendly and/or sustainable materials, processes, devices, and applications

Journal of Materials Chemistry C

Gregory C. Welch

Promoting Photocatalytic CO2 Reduction Through Facile Electronic Modification of N-Annulated Perylene Diimide Rhenium Bipyridine Dyads

Chemical Science

Josh D. B. Koenig, Warren E. Piers, Gregory C. Welch

Green Solvent-Processible N-H Functionalized Perylene Diimide Materials for Scalable Organic Photovoltaics

ACS Applied Materials and Interfaces

Richard D. PettipasAnderson HoffBenjamin S. Gelfand, Gregory C. Welch

Tin Oxide Electron Transport Layers for Air/Solution Processed Conventional Organic Solar Cells

ACS Applied Materials and Interfaces

Anderson Hoff, Mahmoud E. Farahat, Majid Pahlevani, Gregory C. Welch

Air-Processed Organic Photovoltaics for Outdoor and Indoor Use Based upon a Tin Oxide-Perylene Diimide Electron Transporting Bilayer

Advanced Materials Interfaces

Rahim Munir, Edward Cieplechowicz, Renaud Miclette  Lamarche, Roman Chernikov, Simon Trudel, Gregory C. Welch

Three-dimensional Nanoscale Morphology Characterization of Ternary Organic Solar Cells

Small Methods

Ting Yu, Wanting He, Maziar Jafari, Tugrul Guner, Pandeng Li, Mohamed Siaj, Ricardo Izquierdo, Baoquan Sun, Gregory C. Welch, Aycan Yurtsever, Dongling Ma

Sidechain Engineering of N-Annulated Perylene Diimide Molecules

New Journal of Chemistry

Mark MartellMichael U. OchejeBenjamin S. GelfandSimon Rondeau-Gagné, Gregory C. Welch

Ambient Condition, 3-Layer Slot-Die Coated Organic Photovoltaics with PCE of 10%

Advanced Materials Interfaces

Francesco TintoriGregory C. Welch

Photodeposited Polyamorphous CuOx Hole-Transport Layers in Organic Photovoltaics

ACS Applied Energy Materials

Nicholas M. Randell, Renaud Miclette Lamarche, Franceso Tintori, Roman Chernikov, Gregory C. Welch, Simon Trudel

Uphill and Downhill Charge Generation from Charge Transfer to Charge Separated States in Organic Solar Cells

Journal of Materials Chemistry C

Shahidul Alam,  Vojtech Nádaždy, Tomáš Váry, Christian Friebe, Rico Meitzner, Johannes Ahner, Aman Anand, Safakath Karuthedath, Catherine S. P. De Castro, Clemens Göhler, Stefanie Dietz, Jonathan Cann, Christian Kästner, Alexander Konkin, Wichard Beenken, Arthur Markus Anton, Christoph Ulbricht,   Andreas Sperlich, Martin D. Hager, Uwe Ritter, Friedrich Kremer, Oliver Brüggemann, Ulrich S. Schubert, Daniel A. M. Egbe, Gregory C. Welch, Vladimir Dyakonov, Carsten Deibel, Frédéric Laquai, Harald Hoppe

Zinc Oxide-Perylene Diimide Hybrid Electron Transport Layers for Air-Processed Inverted Organic Photovoltaic Devices

ACS Applied Materials and Interfaces

Edward Cieplechowicz, Rahim Munir, Michael A. Anderson, Erin L. Ratcliff, Gregory C. Welch

An Air-Stable N-Type Bay-and-Headland Substituted Bis-Cyano N–H Functionalized Perylene Diimide for Printed Electronics

Journal of Materials Chemistry C - Organic Electronics : Ecofriendly and/or sustainable materials, processes, devices, and applications - special issue

Irene E. ParkSamantha BrixiMark MartellMichael U. OchejeRichard D. PettipasDylan H. HarrisBenjamin S. GelfandSimon Rondeau-GagnéBenoit H. Lessard, Gregory C. Welch 

Lowering Electrocatalytic CO2 Reduction Overpotential Using N-Annulated Perylene Diimide Rhenium Bipyridine Dyads with Variable Tether Length

Journal of the American Chemical Society

Josh D. B. Koenig, Zachary S. Dubrawski, Keerthan R. Rao, Janina Wilkkomm, Benjamin S. Gelfand, Chad Risko, Warren E. Piers, Gregory C. Welch

N-Annulated Perylene Diimide Dimers and Tetramer Non-Fullerene Acceptors: Impact of Solvent Processing Additive on Their Thin Film Formation Behavior

Journal of Chemical Technology & Biotechnology - Special Issue on Green and Sustainable Applied Materials Research in Canada

Audrey LaventureSamantha StanzelAbby-Jo PayneBenoît H LessardGregory C. Welch

Slot-Die Coating of all Organic/Polymer Layers For Large-Area Flexible OLEDs: Improved Device Performance with Interlayer Modification

Advanced Materials Technologies

Amruth C, Deepak K. Dubey, Majid Pahlevani, Gregory C. Welch

Slot-Die Coated Organic UV Indicators and Filters Processed from Green Solvents

Advanced Sustainable Systems

Mahmoud E. Farahat, Gregory C. Welch

Impact of Ring-Fusion on the Excited State Decay Pathways of N-Annulated Perylene Diimides

The Journal of Physical Chemistry C

Ifeanyi K. Madu, Hanjie Jiang, Audrey Laventure, Paul M. Zimmerman, Gregory C. Welch, Theodore Goodson III

Light Manipulation using Organic Semiconducting Materials for Enhanced Photosynthesis

Cell Reports Physical Science

Jackie Zorz, William D.L.  Richardson, Audrey Laventure, Marianne Haines, Edward Cieplechowicz, Alireza Aslani, Agasteswar Vadlamani, Joule Bergerson, Gregory C. Welch, Marc Strous

Perylene Diimide based Non-Fullerene Acceptors: Top Performers and an Emerging Class Featuring N-Annulation

Journal of Materials Chemistry A

Vikas Sharma, Josh Koeing, Gregory C. Welch

Hybrid Tetrameric Perylene Diimide Assemblies

ChemSusChem - Advanced organic solar cells - special issue

Jonathan Cann, Mahmoud E. Farahat, Gregory C. Welch

Improved Performance of Solution Processed OLEDs Using N-Annulated Perylene Diimide Emitters with Bulky Side-Chains

Materials Advances

Sergey Dayneko, Edward Cieplechowicz, Sachin Bhojgude, Jeffrey F. Van Humbeck, Majid Pahlevani, Gregory C. Welch

Organic Light Emitting Diodes (OLEDs) with Slot-Die Coated Functional Layers

Materials Advances

C. Amruth, Majid Pahlevani, Gregory C. Welch

Significant Photostability Enhancement of Inverted Organic Solar Cells by Inserting an N-Annulated Perylene Diimide (PDIN-H) Between the ZnO Electron Extraction Layer and the Organic Active Layer

ACS Applied Energy Materials 

Mozhgan Sadeghianlemraski, Cayley R. Harding, Gregory C. Welch, Hany Aziz

Atomic Precision Graphene Model Compound for Bright Electrochemiluminescence and Organic Light-Emitting Diodes

ACS Applied Materials and Interfaces

Liuqing Yang, Arthur D. Hendsbee, Qin Xue, Shuijian He, Cindy R. De-Jager, Guohua Xie, Gregory C. Welch, Zhifeng Ding

Slot-Die Coated Ternary Organic Photovoltaics for Indoor Light Recycling

ACS Applied Materials and Interfaces

Mahmoud E. Farahat, Audrey Laventure, Michael A. Anderson, Mathieu Mainville, Francesco Tintori, Mario Leclerc, Erin L. Ratcliff, Gregory C. Welch

High Open-Circuit Voltage Roll-to-Roll Compatible Processed Organic Photovoltaics

Journal of Materials Chemistry C

Francesco TintoriAudrey LaventureJosh Koenig, Gregory C. Welch

Acid Dyeing for Green Solvent Processing of Solvent Resistant Semiconducting Organic Thin Films

Materials Horizons

Cayley HardingJonathan CannAudrey LaventureMozhgan SadeghianlemraskiMarwa Abd-Ellah, Keerthan Rao, Benjamin Sidney Gelfand, Hany AzizLoren KaakeChad Risko, Gregory C. Welch

Side‐Chain Engineering of Perylene Diimide Dimers: Impact on Morphology and Photovoltaic Performance

Nano Select

Francesco Tintori , Audrey Laventure, Rayane El‐Berjawi, Edward Cieplechowicz, Lareeb Umer, Piétrick Hudhomme, Gregory C. Welch

Synthesis, Characterization, and use of Benzothioxanthene Imide Based Dimers

Chemical Communications

José María Andres Castan, Clément DalinotSergey DaynekoLaura Abad GalánPablo Simon MarquesOlivier AlévêqueMagali AllainOlivier MauryLudovic FavereauPhilippe BlanchardGregory C. Welch, Clement Cabanetos

A N-H Functionalized Perylene Diimide with Strong Red-light Absorption for Green Solvent Processed Organic Electronics​

Journal of Materials Chemistry C

Dylan HarrisSamantha BrixiBenjamin S. GelfandBenoit H. Lessard, Gregory C. Welch

Synthesis, Self-Assembly, and Air-Stable Radical Anions of Unconventional 6,7-Bis-nitrated N-Annulated Perylene Diimides​

Molecular Systems Design & Engineering

Jonathan Cann, Benjamin S. Gelfand, Gregory C. Welch 

Water Compatible Direct (Hetero)arylation Polymerization of PPDT2FBT: A Pathway Towards Large-Scale Production of Organic Solar Cells

Asian Journal of Organic Chemistry​ - Organic donor–acceptor (D–A) molecules/complexes - special issue 

Mathieu Mainville, Vicky Tremblay, Miriam Z. Fenniri, Audrey Laventure, Mahmoud E. Farahat,  Ryan Ambrose, Gregory C. Welch, Ian G. Hill, Mario Leclerc

Near-IR Absorption and Photocurrent Generation Using a First-of-Its-Kind Boron Difluoride Formazanate Non-Fullerene Acceptor

Materials Chemistry Frontiers - Emerging organic electronics - special issue

Josh D. B. Koenig, Mahmoud E. Farahat, Jasveer S. Dhindsa, Joe B. Gilroy, Gregory C. Welch

Diketopyrrolopyrrole Derivatives Functionalized with N-Annulated PDI and Se-Annulated PDI by Direct (Hetero)Arylation Methods

Asian Journal of Organic Chemistry​ - Organic donor–acceptor (D–A) molecules/complexes - special issue             

Thomas Welsh, Maryam Nazari, Gregory C. Welch

Indeno[1,2-b]thiophene End-capped Perylene Diimide: Should the 1,6-Regioisomers be systematically considered as a contaminant?

Scientific Reports

Pablo Marques, Francesco Tintori, Jose Castan, Pierre Josse, Gregory C. Welch, Philippe Blanchard, Clement Cabanetos

Solution Processed Red Organic Light-Emitting-Diodes using an N-Annulated Perylene Diimide Fluorophore

Journal of Materials Chemistry C

Sergey Dayneko, Mohammad Rahmati, Majid Pahlevani, Gregory C. Welch

Interlayer Engineering of Flexible and Large Area Red Organic Light Emitting Diodes based on an N-Annulated Perylene Diimide Dimer​

ACS Applied Electronic Materials - Young investigators forum - special issue

Mohammad Rahmati, Sergey Dayneko, Majid Pahlevani, Gregory C. Welch

Indoor Photovoltaics: Photoactive Material Selection, Greener Ink Formulations, and Slot-Die Coated Active Layers​

ACS Applied Materials and Interfaces

Sergey Dayneko, Majid Pahlevani, Gregory C. Welch

Harnessing Direct(Hetero)Arylation in Pursuit of a Saddle-Shaped Perylene Diimide Tetramer

ACS Applied Energy Materials

Josh Koeing, Audrey Laventure, Gregory C. Welch

Perylene Diimide based Organic Photovoltaics with Slot-Die Coated Active Layers from Halogen-Free Solvents in Air at Room Temperature​

ACS Applied Materials and Interfaces

Francesco Tintori, Audrey Laventure, Gregory C. Welch

Boron-Nitrogen Substituted Dihydroindeno[1,2-b]fluorene Derivatives as Acceptors in Organic Solar Cells​

Chemical Communications

Matthew M. Morgan,  Maryam Nazari,  Thomas Pickl,  J. Mikko Rautiainen,  Heikki M. Tuononen,  Warren Piers,  Gregory C. Welch, Benjamin Sidney Gelfand

Interfacial ZnO Modification Using a Carboxylic Acid Functionalized N-Annulated Perylene Diimide for Inverted Type Organic Photovoltaics

ACS Applied Electronic Materials

Marwa Abd-Ellah, Jonathan R. Cann, Sergey V. Dayneko, Audrey Laventure, Edward Cieplechowicz, Gregory C. Welch

Screening Quinoxaline-Type Donor Polymers for Roll-to-Roll Processing Compatible Organic Photovoltaics

ACS Applied Polymer Materials

Audrey Laventure, Cayley R. Harding, Edward Cieplechowicz, Zhe Li, Ju Wang, Yingping Zou, Gregory C. Welch

Ternary Organic Solar Cells: Using Molecular Donor or Acceptor Third Components to Increase Open Circuit Voltage

New Journal of Chemistry

Sergey Dayneko, Arthur Hendsbee, Jonathan Cann, Clement Cabanetos, Gregory C. Welch

Additive Induced Crystallization of a Twisted Perylene Diimide Dimer Within a Polymer Matrix

Soft Matter

Francesco Tintori, Audrey Laventure, Gregory C. Welch 

Synthesis of Aromatic Imide Tetramers Relevant to Organic Electronics by Direct (Hetero)Arylation

New Journal of Chemistry

Thomas Welsh, Abby-Jo Payne, Gregory C. Welch

Electrocatalytic CO2 Reduction at Lower Overpotentials Using Iron(III) tetra(meso-thienyl)porphyrins​

ACS Applied Energy Materials

Josh KoenigJanina WillkommRoland RoeslerWarren E. Piers, and Gregory C. Welch

Ligand-Centered Electrochemical Processes Enable CO2 Reduction with a Nickel Bis(triazapentadienyl) Complex​

Sustainable Energy and Fuels

Zachary Dubrawski,  Joshua Heidebrecht,  Braulio M. Puerta Lombardi,  Alexander S. Hyla,  Janina Willkomm,  Chase L. Radford,  Jian-Bin Lin,  Gregory C. Welch,  Sathish Ponnurangam,  Roland Roesler,  Demyan E. Prokopchuk, Warren E. Piers

A Direct Comparison of Monomeric vs Dimeric and Non-Annulated vs N-Annulated Perylene Diimide Electron Acceptors for Organic Photovoltaics​

New Journal of Chemistry

Maryam NazariEdward CieplechowiczThomas Welsh, Gregory C. Welch

A Ring Fused N-Annulated PDI Non-Fullerene Acceptor for High Open Circuit Voltage Solar Cells Processed from Non-Halogenated Solvents

Synthetic Metals - Early career leaders - special issue

AudreyLaventure, SamanthaStanzel, Abby-JoPayne, Benoît H.Lessard, Gregory C.Welch

Using Boron to Tune the Geometry of a Non-Fullerene Acceptor for Improved Organic Solar Cell Performance

ACS Applied Energy Materials

Thomas WelshAudrey LaventureAbdullah AlahmadiGuanghui ZhangThomas BaumgartnerYingping ZouFrieder Jäkle, and Gregory C. Welch

Organic Solar Cells – Special Issue

The Chemical Record

Gregory C. Welch, Mario Leclerc

Development of Organic Dye-Based Molecular Materials for Use in Fullerene-Free Organic Solar Cells​

The Chemical Record - Organic solar cells - special issue

Seth M. McAfee, Gregory C. Welch

Synthesis of Molecular Dyads and Triads based upon N‐Annulated Perylene Diimide Monomers and Dimers​

European Journal of Organic Chemistry

Jonathan Cann, Clement Cabanetos, Gregory C. Welch

A Triazatruxene based Molecular Dyad for Single-Component Organic Solar Cells

Chemistry2

Antoine Labrunie, Giacomo Londi, Sergey V. Dayneko, Martin Blais, Sylvie Dabos-Seignon, Gregory C. Welch, David Beljonne, Philippe Blanchard, Clement Cabanetos

Benzyl and Fluorinated Benzyl Side Chains for Perylene Diimide Non-Fullerene Acceptors

Materials Chemistry Frontiers

Maryam Nazari, Mark Martell, Thomas Welsh, Owen Melville, Zhe Li, Jonathan Cann, Edward Cieplechowicz, Yingping Zou, Benoit Lessard, Gregory C. Welch

A Tetrameric Perylene Diimide Non-Fullerene Acceptor via Unprecedented Direct (Hetero)arylation Cross-Coupling Reactions

Chemical Communications

Abby-Jo Payne, Jiali Song, Yanming Sun, Gregory C. Welch

A Tetrachlorinated Molecular Non-fullerene Acceptor for High Performance Near-IR Absorbing Organic Solar Cells

Journal of Materials Chemistry C

Audrey Laventure, Gregory C. Welch

Control and Characterization of Organic Solar Cell Morphology Through Variable-Pressure Solvent Vapor Annealing

ACS Applied Energy Materials

Derek Zomerman, Jessica Kong, Seth M. McAfee, Gregory C. Welch, Timothy L. Kelly

Donor or Acceptor? How Selection of Rylene Imide Endcap Impacts Polarity of π-Conjugated Molecules for Organic Electronics

ACS Applied Energy Materials

Abby-Jo Payne, Nicole Rice, Seth M McAfee, Shi LI, Pierre Josse, Clement Cabanetos, Chad Risko, Benoit H. Lessard, Gregory C. Welch

Synthesis of a Perylene Diimide Dimer with Pyrrolic N‐H Bonds and N‐Functionalized Derivatives for Organic Field‐Effect Transistors and Organic Solar Cells​

European Journal of Organic Chemistry

Marcus Vespa, Jonathan Cann, Sergey Dayneko, Owen Melville, Arthur Hendsbee, Yinping Zhou, Benoit Lessard, Gregory C. Welch

Toward a Universally Compatible Non‐Fullerene Acceptor: Multi‐Gram Synthesis, Solvent Vapor Annealing Optimization, and BDT‐Based Polymer Screening​

Solar RRL

Seth M. McAfee, Abby-Jo Payne, Arthur D. Hendsbee, Shutao Xu, Yingping Zou, Gregory C. Welch

Combining Facile Synthetic Methods with Greener Processing for Efficient Polymer‐Perylene Diimide Based Organic Solar Cells

Small Methods

Sergey V. Dayneko, Arthur D. Hendsbee, Gregory C. Welch

Direct (Hetero)Arylation Polymerization of a Spirobifluorene and a Dithienyl-Diketopyrrolopyrrole Derivative: New Donor Polymers for Organic Solar Cells​

Molecules - Direct (Hetero)arylation - special issue guest edited by Prof. Mario Leclerc

Pierre Josse, Sergey Dayneko, Yangqian Zhang, Sylvie Dabos-Seignon, Shiming Zhang, Philippe Blanchard, Gregory C. Welch, and Clement Cabanetos

Direct (Hetero)Arylation for the Synthesis of Molecular Materials: Coupling Thieno[3,4-c]pyrrole-4,6-dione with Perylene Diimide to Yield Novel Non-Fullerene Acceptors for Organic Solar Cells​

Molecules - Direct (Hetero)arylation - special issue guest edited by Prof. Mario Leclerc

Thomas A. Welsh, Audrey Laventure, Gregory C. Welch

Inverted P3HT:PC61BM Organic Solar Sells Incorporating a π-Extended Squaraine Dye with H- and (or) J-Aggregation

Canadian Journal of Chemistry - Dalhousie University - special issue

Sergey Dayneko, Abby-Jo Payne, Gregory C. Welch

Organic Solar Cells based on Anthracene-Containing PPE–PPVs and Non-Fullerene Acceptors

Chemical Papers - 81st Macromolecular Symposium, Prague - special issue

Shahidul Alam, Rico Meitzner, Ogechi V. Nwadiaru, Christian Friebe, Jonathan Cann, Johannes Ahner, Christoph Ulbricht, Zhipeng Kan, Stephanie Höppener, Martin D. Hager, Daniel A. M. Egbe, Gregory C. Welch, Frédéric Laquai, Ulrich S. Schubert, Harald Hoppe

Optoelectronic Engineering with Organic Dyes: Utilizing Squaraine and Perylene Diimide to Access an Electron-Deficient Molecule with Near-IR Absorption

Chemical Papers - 81st Macromolecular Symposium, Prague - special issue

Abby-Jo Payne, Seth M. McAfee, Gregory C. Welch

Dithienophosphole-based Molecular Electron Acceptors Constructed using Direct (Hetero)arylation Cross-coupling Methods

Journal of Materials Chemistry C

Thomas Welsh, Audrey Laventure, Thomas Baumgartner, Gregory C. Welch

Bromination of the Benzothioxanthene Bloc: Toward New pi-Conjugated Systems for Organic Electronics

Journal of Materials Chemistry C

Pierre Josse, Shi Li, Sergey Dayneko, Damien Joly, Antonie Labrunie, Sylvie Dabos-Seignon, Magali Allain, Benjamin Siegler, Renaud Demadrille, Gregory C. Welch, Chad Risko, Philippe Blanchard, Clement Cabanetos

Exploiting Direct Heteroarylation Polymerization Homocoupling Defects for the Synthesis of a Molecular Dimer

New Journal of Chemistry - Cover Article

Willem B. Breukelaar, Seth M. McAfee, Gregory C. Welch

Spectroscopic Engineering toward Near-Infrared Absorption of Materials Containing Perylene Diimide

ChemPlusChem

Jonathan Cann, Clement Cabanetos, Gregory C. Welch

An Unsymmetrical Non-Fullerene Acceptor: Synthesis via Direct Heteroarylation, Self-Assembly, and Utility as a Low Energy Absorber in Organic Photovoltaic Cells

Chemical Communications

Abby-Jo Payne, Shi Li, Sergey V. Dayneko, Chad Risko, and Gregory C. Welch

A Non-Fullerene Acceptor with a Diagnostic Morphological Handle for Streamlined Screening of Donor Materials in Organic Solar Cells

Journal of Materials Chemistry A

Seth M. McAfee, Abby-Jo Payne, Sergey V. Dayneko, Gururaj P. Kini, Chang Eun Song, Jong-Cheol Lee, and Gregory C. Welch

 

Thienoisoindigo End-capped Molecular Donors for Organic Photovoltaics: Effect of the Central π-Conjugated Connector

Dyes and Pigments

Pierre Josse, Sylvie Dabos-Seignon, Seth M. McAfee, Gregory C. Welch, Philippe Blanchard and Clément Cabanetos

Optimized Synthesis of π-Extended Squaraine Dyes Relevant to Organic Electronics by Direct (Hetero)Arylation and Sonogashira Coupling Reactions

Organic & Biomolecular Chemistry - CSC100: Celebrating Canadian Chemistry - special issue

Abby-Jo Payne, and Gregory C. Welch

N-Annulated Perylene Diimide Dimers: The Effect of Thiophene Bridges on Physical, Electronic, Optical, and Photovoltaic Properties

Sustainable Energy & Fuels - CSC100: Celebrating Canadian Chemistry - special issue

Arthur D. HendsbeeSergey V. Dayneko, Jefferson A. Pells, Jonathan R. Cann, and Gregory C. Welch

Applying Direct Heteroarylation Synthesis to Evaluate Organic Dyes as the Core Component in PDI-based Molecular Materials for Fullerene-Free Organic Solar Cells

Journal of Materials Chemistry A - Emerging Investigators 2017 & CSC100: Celebrating Canadian Chemistry - special issues

Seth M. McAfeeSergey V. Dayneko, Arthur D. Hendsbee, Pierre JossePhilippe BlanchardClément Cabanetos, and Gregory C. Welch

N-Annulated Perylene Diimide Dimers: Acetylene Linkers as a Strategy for Controlling Structural Conformation and The Impact on Physical, Electronic, Optical and Photovoltaic Properties

Journal of Materials Chemistry C - CSC100: Celebrating Canadian Chemistry - special issue

Jonathan CannSergey V. DaynekoJon-Paul SunArthur D. HendsbeeIan G. Hill, and Gregory C. Welch

Simply Complex: The Efficient Synthesis of an Intricate Molecular Acceptor for High-Performance Air-Processed and Air-Tested Fullerene-free Organic Solar Cells

Chemistry of Materials

Seth M. McAfeeSergey V. DaynekoPierre JossePhilippe BlanchardClément Cabanetos, and Gregory C. Welch

Fullerene-free Polymer Solar Cells Processed from Non-Halogenated Solvents in Air with PCE of 4.8%

Chemical Communications

Sergey V. Dayneko, Arthur D. Hendsbee and Gregory C. Welch

Thiophene vs Thiazole: Effect of the pi-Connector on the Properties of Phthalimide End-Capped Diketopyrrolopyrrole based Molecular Acceptors for Organic Photovoltaics

Dyes and Pigments

Pierre Josse, Patricia Chavez, Chloé Dindault, Clément Dalinot, Seth M. McAfee, Sylvie Dabos-Seignon, Denis Tondelier, Gregory C. Welch, Philippe Blanchard, Nicolas Leclerc, and Clément Cabanetos

Synthesis, Self-Assembly, and Solar Cell Performance of N-Annulated Perylene Diimide Non-Fullerene Acceptors

Chemistry of Materials

Arthur D. Hendsbee, Jon-Paul Sun, Way Kit Law, He Yan, Ian G. Hill, Denis M. Spasyuk and Gregory C. Welch

Effect of Side Chains on the Electronic and Photovoltaic Properties of Diketopyrrolopyrrole-based Molecular Acceptors

Organic Electronics

Pierre Josse, Antoine Labrunie, Clément Dalinot, Seth M. McAfee, Sylvie Dabos-Seignon, Jean Roncali, Gregory C. Welch, Phillippe Blanchard and Clément Cabanetos

Perylene Diimide Based All Small-Molecule Organic Solar Cells: Impact of Branched-alkyl Side Chains on Solubility, Photophysics, Self-assembly, and Photovoltaic Parameters

Organic Electronics

Jon-Paul Sun, Arthur D. Hendsbee, Alexander J. Dobson, Gregory C. Welch and Ian G. Hill

 

Development of Low Band Gap Molecular Donors with Phthalimide Terminal Groups for use in Solution Processed Organic Solar Cells

Dyes and Pigments

Ronan San Juan, Abby-Jo Payne, Gregory C. Welch and Ala'a F. Eftaiha

 

Synthesis and Structure-Property Relationships of Phthalimide and Naphthalimide based Organic pi-Conjugated Small Molecules

Physical Chemistry Chemical Physics

Abby-Jo Payne, Arthur D. Hendsbee, Seth M. McAfee, Devproshad K. Paul, Kunal Karan and Gregory C. Welch

 

The Optimization of Direct Heteroarylation and Sonogashira Cross-Coupling Reactions as Efficient and Sustainable Synthetic Methods to Access pi-Conjugated Materials with Near-Infrared Absorption

ACS Sustainable Chemistry and Engineering

Seth M. McAfee, Jonathan R. Cann, Pierre Josse, Phillippe Blanchard, Clement Cabanetos, and Gregory C. Welch

Understanding the Morphology of Solution Processed Fullerene-free Small Molecule Bulk Heterojunction Blends

Physical Chemistry Chemical Physics

Andrew M. Namespetra, Elizabeth Kitching, Ala'a F. Eftaiha,  Ian G. Hill and Gregory C. Welch

 

Development of Simple Hole-transporting Materials for Perovskite Solar Cells

Canadian Journal of Chemistry - University of Calgary - special issue

Andrew M. Namespetra, Arthur D. Hendsbee, Gregory C. Welch and Ian G. Hill

Pivotal Factors in Solution-Processed, Non-Fullerene, All Small-Molecule Organic Solar Cell Device Optimization

Organic Electronics

Jessica M. Topple, Seth M. McAfee, Gregory C. Welch and Ian G. Hill

 

The Structural Evolution of an Isoindigo-based Non-Fullerene Acceptor for Use in Organic Photovoltaics

RSC Advances

Seth M. McAfee, Jessica M. Topple, Jon-Paul Sun, Ian G. Hill and Gregory C. Welch

 

Chapter 5: Design and Synthesis of Small Molecule Donors for High Efficiency Solution Processed Organic Solar Cells

Polymer Photovoltaics: Materials, Physics and Device Engineering (RSC Publishing)

Seth M. McAfee, Gregory C. Welch and Corey V. Hoven

 

Phthalimide-based pi-Conjugated Small Molecules with Tailored Electronic Energy Levels for Use as Acceptors in Organic Solar Cells

Journal of Materials Chemistry C

Arthur D. Hendsbee, Seth M. McAfee, Jon-Paul Sun, Theresa M. McCormick, Ian G. Hill and Gregory C. Welch

Indoloquinoxaline as a Terminal Building Block for the Construction of pi-Conjugated Small Molecules Relevant to Organic Electronics

Dyes and Pigments

Abby-Jo Payne, Jenny S. J. McCahill and Gregory C. Welch

Key Components to the Recent Performance Increases of Solution Processed Non-Fullerene Small Molecule Acceptors

Journal of Materials Chemistry A

Seth M. McAfee, Jessica M. Topple, Ian G. Hill and Gregory C. Welch

Facile Synthesis of Unsymmetrical and pi-Extended Furan-Diketopyrrolopyrrole Derivatives Through C-H Direct (Hetero)Arylation Using a Heterogeneous Catalyst System

New Journal of Chemistry

Jetsuda Areephong, Arthur D. Hendsbee and Gregory C. Welch

A Narrow Band Gap Isoindigo Based Molecular Donor for Solution Processed Organic Solar Cells

New Journal of Chemistry

Jetsuda Areephong, Ronan R. San Juan, Abby-Jo Payne and Gregory C. Welch 

Utility of a Heterogeneous Palladium Catalyst for the Synthesis of a Molecular Semiconductor via Stille, Suzuki and Direct Heteroarylation Cross-Coupling Reactions

RSC Advances

Seth M. McAfee, Jenny S. J. McCahill, Casper M. Macaulay, Arthur D. Hendsbee and Gregory C. Welch 

Unusual Loss of Electron Mobility Upon Furan for Thiophene Substitution in a Molecular Semiconductor

Organic Electronics

Arthur D. Hendsbee, Jon-Paul Sun, Theresa M. McCormick, Ian G. Hill and Gregory C. Welch 

An Electron-Deficient Small Molecule Accessible From Sustainable Synthesis and Building Blocks for Use as a Fullerene Alternative in Organic Photovoltaics

ChemPhysChem - Cover Article - Organic Electronics - special issue

Seth M. McAfee, Jessica M. Topple, Abby-Jo Payne, Jon-Paul Sun, Ian G. Hill and Gregory C. Welch

Design and Computational Characterization of Non-Fullerene Acceptors for Use in Solution-Processable Solar Cells

Journal of Physical Chemistry A

Lesley R. Rutledge, Seth M. McAfee and Gregory C. Welch 

High Open Circuit Voltage Organic Solar Cells Based Upon Fullerene Free Bulk Heterojunction Active Layers

Canadian Journal of Chemistry

Ala'a F. Eftaiha, Jon-Paul Sun, Arthur D. Hendsbee, Casper M. Macaulay, Ian G. Hill and Gregory C. Welch 

Phthalimide-thiophene-based Conjugated Organic Small Molecules with High Electron Mobility

Journal of Materials Chemistry C

Jon-Paul Sun, Arthur D. Hendsbee, Ala'a F. Eftaiha, Casper M. Macaulay, Lesley R. Rutledge, Gregory C. Welch and Ian G. Hill 

Synthesis of an H-Aggregated Thiophene-Phthalimide Based Small Molecule via Microwave Assisted Direct Arylation Coupling Reactions

Dyes and Pigments

Arthur D. Hendsbee, Casper M. Macaulay and Gregory C. Welch

Electron Deficient Diketopyrrolopyrrole Dyes for Organic Electronics: Synthesis by Direct Arylation, Optoelectronic Characterization, and Charge Carrier Mobility

Journal of Materials Chemistry A

Arthur D. Hendsbee, Jon-Paul Sun, Lesley R. Rutledge, Ian G. Hill and Gregory C. Welch

Development of Small Molecule Donors for Solution-Processed Organic Solar Cells

Material Matters

Abby-Jo Payne and Gregory C. Welch

Recent Advances of Non-Fullerene, Small Molecular Acceptors for Solution Processed Bulk Heterojunction Solar Cells

Journal of Materials Chemistry A

Ala' F. Eftaiha, Jon-Paul Sun, Ian G. Hill and Gregory C. Welch

 

University of California Santa Barbara Publications (Welch PDF)

 

Perez, A. L.; Rogers, J. T.; Brady, M. A.; Sun, Y.; Welch, G. C.; Schmidt, K.; Toney, M. F.; Jinnai, H.; Heeger, A. J.; Chabinyc, M.; Bazan, G. C.; Kramer, E. J. (The Role of Solvent-Addtive Processing in High Performance Small Molecule Solar Cells). Chemistry of Materials. 2014, 26, 6531-6541. 10.1021/cm5031987. 

 

Coughlin, J; Zhugayevych, A; Bakus, R; van der Poll, T; Welch, G. C.; Teat, S; Bazan, G; Tretiak, S (A Combined Experimental and Theoretical Study of Conformational Preferences of Molecular Semiconductors). Journal of Physical Chemistry C. 2014, 118, 15610-15623. 10.1021/jp506172a. 

 

Coughlin, J.; Henzon, Z; Welch, G. C.; Bazan, G. C. (Design and Synthesis of Molecular Donors for Solution-Processed High-Efficiency Organic Solar Cells). Accounts of Chemicals Research, 2014, 47, 257-270. 10.1021/ar400136b. 

 

Ratcliff, E. L.; Bakus II, R. C.; Welch, G. C.; van der Poll, T. V.; Garcia, A.; Cowan, S. R.; MacLeod, B. A.; Ginley, D. S.; Bazan, G. C.; Olson, D. C. (Formation of interfacial traps upon surface protonation in small molecule solution processed bulk heterojunctions probed by photoelectron spectroscopy). Journal of Materials Chemistry C, 2013, 1, 6223-6234. 10.1039/C3TC31064G. 

 

Henson, Z.; Zalar, P.; Chen, X.; Welch, G. C.; Nguyen, T.; Bazan, G. C. (Towards Environmentally Friendly Processing in Molecular Semiconductors). Journal of Materials Chemistry A, 2013, 1, 11117-11120. 10.1039/C3TA12690K. 

 

Eisenmenger, N.; Su, G.; Welch, G.C.; Takacs, C.J.; Bazan, G. C.; Kramer, E; Heeger, A. J.; Chabinyc, M. (Effect of bridging atom identity on the morphological behavior of solution-processed small molecule bulk heterojunction photovoltaics). Chemistry of Materials, 2013, 25, 1688-1698. 10.1021/cm4001416. 

 

Zhugayevych, A.; Postupna, O.; Bakus II, R. C.;  Welch, G. C.; Bazan, G. C.; Tretiak, S. (Ab-initio Study of a Molecular Crystal for Photovoltaics: Light Absorption, Exciton and Charge Carrier Transport). J. Phys. Chem. C., 2013, 117, 4920-4930. 10.1021/jp310855p. 

 

Walker, B.; Liu, J.; Kim, C.; Welch, G.; Park, J.; Lin, J.; Zalar, P.; Proctor, C.; Seo, J.; Bazan, G.; Nguyen, T. (Optimization of Energy Levels by Molecular Design: Evaluation of bis-Diketopyrrolopyrrole Molecular Donor Materials for Bulk Heterojunction Solar Cells). Energy Environ. Sci., 2013, 6, 952-962. 10.1039/C3EE24351F. 

 

Welch, G. C.; Bakus II, R. C.; Teat, S.; Bazan, G. C. (Impact of Regiochemistry and Isoelectronic Bridgehead Substitution on the Molecular Shape and Bulk Organization of Narrow Band Gap Chromophores). J. Am. Chem. Soc., 2013, 135, 2298–2305. 10.1021/ja310694t. 

 

Leong, W. L.; Welch, G. C.; Seifter, J.; Seo, J.; Bazan, G. C.; Heeger, A. J. (Understanding the role of thermal processing in high performance solution processed small molecule bulk heterojunction solar cells). Adv. Energy Mater. 2013, 3, 356-363. 10.1002/aenm.201200631. 

 

Kaake, L. G.;  Jasieniak, J.J; Bakus II, R. C.; Welch, G. C.; Moses, D.; Bazan, G. C.; Heeger, A. J. (Photoinduced Charge Generation in a Molecular Bulk Heterojunction Material). J. Am. Chem. Soc., 2012, 134, 19828–19838. 10.1021/ja308949m. 

 

Jasieniak, J. J.;  Hsu, B. B. Y.; Welch, G. C.; Bazan, G. C.; Moses, D.; Heeger, A. J. (Insights into π-Conjugated Small Molecule Neat Films and Blends As Determined Through Photoconductivity). ACS   Nano. 2012, 6, 8735–8745. 10.1021/nn303724m. 

 

Takacs, C. J.; Sun, Y.; Welch, G. C.; Perez, L. A.; Liu, X.; Wen W.; Bazan, G. C.; Heeger, A. J. (Solar       cell efficiency, self-assembly and dipole-dipole interactions of isomorphic narrow bandgap molecules). J. Am. Chem. Soc. 2012, 134, 16597–16606. 10.1021/ja3050713. 

 

Garcia, A.; Welch, G. C.; Ratcliff, E.; Ginley, D. S.; Bazan, G. C.; Olson, C. D. (Improvement of Interfacial Contacts for New Small-Molecule Bulk-Heterojunction Organic Photovoltaics). Adv. Mater. 2012, 24, 5368-5373. 10.1002/adma.201200963. 

 

Huang, Y. C.; Welch, G. C.; Bazan, G. C.; Chabinyc, M.; Su, W. F. (Self-Vertical Phase Separation Study of Nanoparticle/Polymer Solar Cells by Introducing Fluorinated Small Molecules). Chem. Comm. 2012, 48, 7250-7252. 10.1039/C2CC32401F.

 

Zalar, P.; Henson, Z. H.; Welch, G. C.; Bazan, G. C.; Nguyen, T. Q. (Color Tuning in Polymer Light-Emitting Diodes with Lewis Acids). Angew. Chem. Int. Ed. 2012, 51, 7495-7498. 10.1002/anie.201202570.

 

Kaake, L.; Welch, G. C.; Moses, D.; Bazan, G. C.; Heeger, A. J. (Influence of Processing Additives on Ultrafast Charge Transfer Dynamics in a Small Molecule Bulk Heterojunction Film).  J. Phys. Chem. Lett. 2012, 3, 1253-1257. 10.1021/jz300365b. 

 

Leong, W. L.; Welch, G. C.; Kaake, L.; Takacs, C. J.; Sun, Y.; Bazan G. C.; Heeger, A. J. (Role of Trace Impurities in the Photovoltaic Performance of Solution Processed Small    Molecule Bulk Heterojunction Solar Cells). Chem. Sci. 2012, 3, 2103-2110. 10.1039/C2SC20157G. 

 

Henson, Z.; Welch, G.C.; van der Poll, T.; Bazan, G. C. (Pyridalthiadiazole-Based Narrow Band Gap Chromophores). J. Am. Chem. Soc. 2012, 134, 3766-3779. 10.1021/ja209331y. 

 

Sun, Y.; Welch, G. C.; Leong, W. L.; Takacs, C. J.; Bazan G. C.; Heeger, A. J. (Solution-Processed Small-Molecule Solar Cells with 6.7% Efficiency). Nat. Mater. 2012, 11, 44-48. 10.1038/nmat3160.

*Highlighted in the MRS Bulletin, 2012, 37, 10.*

 

Ying, L.; Hsu, B. B. Y.; Zhan, H.; Welch, G. C.; Zalar, P.; Perez, L.; Nguyen, T. C.; Heeger, A. J.; Bazan, G. C. (Regioregular Pyridal[2,1,3]thiadiazole p-Conjugated Copolymers). J. Am. Chem. Soc. 2011, 133, 18538-18541. 10.1021/ja207543g. 

 

Welch, G. C.; Perez, L.; Hoven, C. V.; Zhang, Y.; Dang, X. D.; Sharenko, A.; Toney, M. F.; Kramer, E.J.; Nguyen, T. Q.; Bazan, G.C. (A Modular Molecular Framework for Utility in Small-Molecule Solution-Processed Organic Photovoltaic Devices). J. Mat. Chem. 2011, 121, 12700-12709. 10.1039/C1JM11963J.

 

Caputo, B. J. A.; Welch, G. C.; Kamkar, D. A.; Henson, Z.; Bazan, G. C. (A Dithienosilole-Benzooxadiazole Copolymer for Utility in Organic Solar Cells). SMALL, 2011, 7, 1422-1426. 10.1002/smll.201100005.

Welch, G. C.; Bazan, G. C. (Lewis Acid Adducts of Narrow Band Gap Conjugated Polymers). J. Am. Chem. Soc. 2011, 131 (12), 4632-4644. 10.1021/ja110968m.          

 

Welch, G. C.; Coffin, R.; Peet, J.; Bazan, G. C. (Band Gap Control in Conjugated Oligomers via   Lewis Acids). J. Am. Chem. Soc. 2009, 131 (31), 10802–10803. 10.1021/ja902789w. 

University of Windsor Publications (Welch - PhD)

 

Granville, S.; Welch, G. C.; Stephan, D. W. (Ni, Pd, Pt and Ru Complexes of Phosphine-Borate   Ligands). Inorg. Chem. 2012, 51, 4711-4721. 10.1021/ic2026895. 

 

Stephan, D; Greenberg, S; Graham, T; Chase, P; Hastie, J; Geier, S; Farrell, J; Brown, C; Heiden, Z; Welch, G. C.; Ullrich, M. (Metal-Free Catalytic Hydrogenation of Polar Substrates by Frustrated Lewis Pairs). Inorg. Chem. 2011, 50, 12338-12348. 10.1021/ic200663v. 

 

Dureen, M. A.; Welch, G. C.; Gilbert, T. M.; Stephan, D. W. (Heterolytic Cleavage of Disulfides by Frustrated Lewis Pairs). Inorg. Chem. 2009, 48, 9910-9917. 10.1021/ic901590s. 

 

McCahill, J. S. J.; Welch, G. C.; Stephan, D. W. (Sterically Hindered Phosphine and Phosphonium-based Activators and Additives for Olefin Polymerization). Dalton Trans. 2009, 40, 8555-8561. 10.1039/B911489K. 

 

Alhomaidan, O.; Welch, G. C.; Bai, G.; Stephan D. W. (Hafnium-phosphinimide complexes). Can. J. Chem. 2009, 87, 1163-1172. 10.1139/V09-082. 

 

Welch, G. C.; Prieto, R.; Dureen, M. A.; Lough, A. J; Labeodan, S.; Höltrichter-Rössmann, T.; Stephan, D. W. (Reactions of Phosphines with Electron Deficient Boranes). Dalton Trans. 2009, 40, 1559-1570. 10.1039/B814486A. 

 

Welch, G. C.; Holtrichter-Roessmann, T.; Stephan, D. W. (Thermal Rearrangement of Phosphine-B(C6F5)3 Adducts). Inorg. Chem. 2008, 47, 1904-1906. 10.1021/ic702485r. 

 

Chase, P. A.; Welch, G. C.; Jurca, T.; Stephan, D. W. (Metal-Free Catalytic Hydrogenation) Angew. Chem. Int. Edn. Engl. 2007, 46, 8050-8053. 10.1002/anie.200702908. October. *Cover Article, VIP Article, Featured in C&EN New 85(37) Page 33, September 2007*.

 

Welch, G. C.; Cabrera, L.; Chase, P. A.; Hollink, E.; Masuda, J. D.; Wei, P.; Stephan, D. W. (Tuning Lewis Acidity Using the Reactivity of “Frustrated Lewis Pairs”: Facile Formation of Phosphine-boranes and Cationic Phosphonium-boranes). Dalton Trans. 2007, 31, 3407-3414. 10.1039/B704417H.

 

*Cover Article*.

 

McCahill, J. S. J.; Welch, G. C.; Stephan, D. W. (Reactivity of “Frustrated Lewis Pairs”: Three Component Reactions of Phosphines, a Borane, and Olefins). Angew. Chem. Int. Edn. Engl. 2007, 46, 4968-4971. 10.1002/anie.200701215. *VIP Article*.

 

Welch, G. C.; Stephan, D. W. (Facile Heterolytic Cleavage of Dihydrogen by Phosphines and Boranes). J. Am. Chem. Soc. 2007, 129, 1880-1881. 10.1021/ja067961j.

 

Welch, G. C.; San Juan, R.; Masuda, J. D.; Stephan, D. W. (Reversible, Metal Free Hydrogen Activation). Science 2006, 314, 1124-1126. 10.1126/science.1134230.

 

*Highlighted “Breaking the H2 Marriage and Reuniting the Couple” Gregory Kubas, Science 2006, 314, 1096-1097. Featured in C&EN News, 84(47) Page 21, November 2006*

 

Carbrera, L.; Welch, G. C.; Wei, P.; Masuda, J. D.; Stephan, D. W. (Pyridine and Phosphine Reactions with [CPh3][B(C6F5)4]). Inorg. Chim. Acta. 2006, 359, 3066-3071. 10.1016/j.ica.2006.02.006.

 

 *Invited for the special 'Professor Brian James' issue*.

 

Welch, G. C.; Masuda, J. D.; Stephan, D. W. (Phosphonium-Borate Zwitterions, Anionic Phosphines, and Dianionic Phosphonium-Dialkoxides via Tetrahydrofuran Ring-Opening Reactions). Inorg. Chem. 2006, 45, 478-480. 10.1021/ic051713r.

 

University of Calgary Publications (Welch - BSc)

 

Welch, G. C.; Piers, W. E.; Parvez, M.; McDonald, R. (Neutral and Cationic Organoaluminum Complexes Utilizing a Novel Anilido Phosphinimine Ligand). Organometallics, 2004, 23, 1811-1818. 10.1021/om034302w.

 

Hayes, P. H.; Welch, G. C.; Emslie, D.; Noack, C.; Piers, W. E., Parvez, M. (A New Chelating Anildio-Imine Donor Related to ß-Diketiminato Ligands for Stabilization of Organoyttrium Cation). Organometallics, 2003, 22, 1577-1579. 10.1021/om030157a.

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