Prof. Gregory C. Welch talks about "New perylene diimide molecular materials for use as electron acceptors in organic solar cells"
Date: Friday 15.09.2017 14:00
Place: Geschwister-Scholl-Platz 1, Seminar Room N 110
New perylene diimide molecular materials for use as electron acceptors in organic solar cells
by Prof. Gregory C. Welch
Department of Chemistry, University of Calgary, 2500 University Dr, Calgary, AB, Canada, T2N 1N4
Perylene diimides (PDI) based compounds are an important class of opto-electronic materials that have found utility as active components in a wide range of electronic devices. Most recently, PDI based materials have been shown to be effective at replacing fullerenes in bulk-heterojunction organic solar cells. In the pursuit of new materials to replace fullerenes, our research group has recently developed an optimized synthetic pathway towards N-annulated PDI structures. N-annulation at the bay position of the PDI chromophore allows for installation of functional groups that can fine tune solubility, self-assembly, optical and electronic properties. This presentation will detail our synthetic methodology, introduce several new monomeric, dimeric and trimeric PDI materials, cover structure-property relationships including single crystal X-ray analysis of twisted PDI molecules, and highlight selected photovoltaic performance that rival fullerene based organic solar cells.
Chemical Communications. 2017. 10.1039/C7CC05836E
Chemical Communications. 2017. 53, 1164-1167.
Chemistry of Materials 2017. 29, 1309-1314.
Chemistry of Materials 2016, 28, 7098–7109
Contact: Prof. Thomas Weitz, firstname.lastname@example.org Tel. 2180 – 3569