Abstract

Photoinduced interlayer electron transfer from the excited state of oxacarbocyanine (OCC) to viologen (VIO) is depressed or enhanced by an external electric field, depending on the direction of applied electric fields, in a donor-acceptor system composed of mixed monolayers of OCC and mixed monolayers of VIO separated by a spacer layer of fatty acid. As a result, field-induced increase and decrease of the quantum yield of OCC fluorescence are observed in the molecular assemblies of LB films.

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