Enhancing the photoelectric effect with a potential-programmed molecular rectifier

Journal of the American Chemical Society
Takane ImaokaKimihisa Yamamoto

Abstract

Dendrimer-based electron rectifiers were applied to photoconducting devices. A remarkable enhancement of the photocurrent response was observed when a zinc porphyrin as the photosensitizer was embedded in the dendritic phenylazomethine (DPA) architecture. The dendrimer-based sensitizer exhibited a 20-fold higher current response than the non-dendritic zinc porphyrin. In sharp contrast, a similar application of the dendrimer with poly(vinylcarbazole) as the electron donor resulted in a decreased response. This is consistent with the idea that the DPA facilitates electron transfer from the core to its periphery along a potential gradient, as predicted by density functional theory calculations.

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Citations

Apr 11, 2013·Organic Letters·Takane ImaokaKimihisa Yamamoto
Feb 24, 2018·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Takane ImaokaKimihisa Yamamoto
Apr 29, 2015·Dalton Transactions : an International Journal of Inorganic Chemistry·Takane ImaokaKimihisa Yamamoto
Sep 25, 2019·Chemical Reviews·Kimihisa YamamotoTetsuya Kambe

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