2012年5月29日火曜日

日本化学会春季年会で優秀講演賞(産業)を受賞

今年3月に慶應義塾大学(横浜)で行われた日本化学会第92春季年会にて修士課程2年(3月現在)の藏本泰式君が優秀講演賞(産業)を受賞しました。

2012年5月8日火曜日

Enhancing the Photoelectric Effect with a Potential-Programmed Molecular Rectifier


T. Imaoka, H. Ueda, K. Yamamoto
J. Am. Chem. Soc. 2012, 134, 8412-8415.

Enhancing the Photoelectric Effect with a Potential-Programmed Molecular Rectifier


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.