pH-Controlled switching of photocurrent direction by self-assembled monolayer of helical peptides

被引：69

作者：

Yasutomi, S ^{[1
]}

Morita, T ^{[1
]}

Kimura, S ^{[1
]}

机构：

[1] Kyoto Univ, Grad Sch Engn, Dept Chem Mat, Nishikyo Ku, Kyoto 6158510, Japan

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2005年 / 127卷 / 42期

关键词：

D O I：

10.1021/ja055624p

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A novel molecular system, where the photocurrent direction can be reversibly switched by changing the pH of the solution, was prepared on gold from helical peptides carrying a photosensitizer and a carboxyl group at the terminal. Upon photoexcitation of the photosensitizer in an aqueous solution containing an electron donor and acceptor at pH 10, the monolayer generated an anodic photocurrent due to enhancement of the dipole moment by a carboxylate anion, while it generated an opposite cathodic photocurrent at pH 3.4. Copyright © 2005 American Chemical Society.

引用

页码：14564 / 14565

页数：2

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