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Updated: May 24, 2026
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Cercosporin-Photocatalyzed [4+1]- and [4+2]-Annulations of Azoalkenes Under Mild Conditions
Published on: July 17, 2020
Diarylindenotetracenes via a selective cross-coupling/C-H functionalization: electron donors for organic photovoltaic
Xingxian Gu1, Wade A Luhman, Elisey Yagodkin
1Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States.
Abstract:
A direct synthesis of new donor materials for organic photovoltaic cells is reported. Diaryindenotetracenes were synthesized utilizing a Kumada-Tamao-Corriu cross-coupling of peri-substituted tetrachlorotetracene with spontaneous indene annulation via C-H activation. Vacuum deposited planar heterojunction organic photovoltaic cells incorporating these molecules as electron donors exhibit power conversion efficiencies exceeding 1.5% with open-circuit voltages ranging from 0.7 to 1.1 V when coupled with C(60) as an electron acceptor.
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