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Synthesis, structure, and photoelectrochemical properties of new tetrathiafulvalene-diphenyl-1,3,4-oxadiazole dyads

✍ Scribed by Hideki Fujiwara; Yasuo Sugishima; Keijiro Tsujimoto

Publisher: Elsevier Science
Year: 2008
Tongue: French
Weight: 488 KB
Volume: 49
Category: Article
ISSN: 0040-4039
DOI: 10.1016/j.tetlet.2008.10.001

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✦ Synopsis

New donor-acceptor dyads containing tetrathiafulvalene (TTF) and 2,5-diphenyl-1,3,4-oxadiazole (PPD) moieties were synthesized to develop new photoconducting materials. Crystal structure analysis indicated the highly planar molecular skeleton of the dyad. Fluorescence from the PPD part was almost quenched by the intramolecular electron transfer from the TTF part to the PPD part. Photoelectrochemical measurements indicate that cathodic photocurrents can be generated from a thin film of the dyad spincoated on ITO electrode.

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## Abstract Two new unsymmetrical tetrathiafulvalene (TTF) derivatives, 2,3‐bis(cyanoethylthio)‐6,7‐(methyl‐ethylenedithio)tetrathiafulvalene (**6a**) and 2,3‐bis(cyanoethylthio)‐6,7‐(cyclopentodithio)tetrathiafulvalene (**6b**), have been prepared and characterized by NMR, MS, IR and Elemental ana