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Perylene diimide based materials for printed electronics

Professor Gregory Welch

University of Calgary



Polycyclic heteroerotic molecules are a widely used as electronic materials.1 The N-annulated perylene diimide (NPDI) chromophore is one such compound proven useful in constructing functional materials.2 Utility of this dye in the field of organic electronics was sparse until our team re-introduced it as a useful building block for which to construct electron acceptors for organic photovoltaics.3 N-annulation of the PDI chromophore destabilize the frontier molecular orbital energy levels allowing for high voltage solar cell devices4 to be made and use as an electron reservoir in small molecule catalysis.5 An extra site for side-chain installation dramatically increases materials solubility, directs self-assembly, and allows for water soluble conjugated ionic salts to be readily formed. This presentation will highlight our teams work developing N-annulated perylene diimide derivatives to deliver green solvent, roll-to-roll compatible processed electronic devices.6-8

  • Rev. 2022, 122, 565−788
  • European Journal of Organic Chemistry, 2000, 2000, 2, 365-380
  • Chemistry of Material, 2016, 28, 19, 7098-7109
  • Mater. Chem. C, 2020,8, 13430-13438
  • Am. Chem. Soc.2021, 143, 40, 16849–16864
  • ACS Applied Materials and Interfaces, 2020, 11, 42, 39010-39017
  • ACS Applied Materials and Interfaces, 2020, 11, 49, 46017-46025
  • ACS Applied Materials and Interfaces, 2021, 13, 41, 49096-49103

Dr. Gregory Welch obtained his BSc in Chemistry from the University of Calgary in 2003 and worked in the laboratories of Dr. Chivers and Dr. Piers. He earned his PhD at the University of Windsor in 2008 under the supervision of Dr. Stephan where he helped develop Frustrated Lewis Pair chemistry. He then moved to UC-Santa Barbara, where he studied organic solar cells as a NSERC postdoctoral fellow with Dr. Bazan.

He began a faculty position in 2012 as a Canadian Research Chair at Dalhousie University in Halifax, NS. In 2015 he relocated to the University of Calgary as a Canadian Research Chair. His research interests are focused on the design, synthesis and characterization of organic/organometallic materials and use in printed electronics, coatings and catalysis. He was promoted to full professor in 2021. He enjoys raising his kids, heavy metal music, tanks, home renovations, and landscaping. 

Conférence avec le professeur Gregory C. Welch de University of Calgary