Carbazole–Cyanobenzene Dyes Electrografted to Carbon or Indium-Doped Tin Oxide Supports for Visible Light-Driven Photoanodes and Olefin Isomerizations

The organic carbazole–cyanobenzene push–pull dye 1,2,3,5-tetrakis­(carbazol-9-yl)-4,6-dicyanobenzene was derivatized and attached to carbon or indium-doped tin oxide (ITO) electrodes by simple diazonium electrografting. The surface-bound dye is active and stable for the visible light photosynthetic...

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Published inACS applied materials & interfaces Vol. 13; no. 15; pp. 17745 - 17752
Main Authors Rasu, Loorthuraja, Amiri, Mona, Bergens, Steven H
Format Journal Article
LanguageEnglish
Published United States American Chemical Society 21.04.2021
Subjects
Energy, Environmental, and Catalysis Applications
energy transfer
organic photocatalyst
light harvesting
photoelectrode
diazonium electrografting
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Summary:The organic carbazole–cyanobenzene push–pull dye 1,2,3,5-tetrakis­(carbazol-9-yl)-4,6-dicyanobenzene was derivatized and attached to carbon or indium-doped tin oxide (ITO) electrodes by simple diazonium electrografting. The surface-bound dye is active and stable for the visible light photosynthetic isomerization of a wide range of functionalized stilbene and cinnamic acid derivatives. Up to 87,000 net turnovers were obtained for the isomerization of trans-stilbene. The isomerizations can be carried out in air with a 33% reduction in the rate. The ITO photoelectrodes are also active and stable toward photo-oxidations under basic and acidic conditions.
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ISSN:1944-8244
1944-8252
DOI:10.1021/acsami.1c05064