Supramolecular design of a porphyrin-[60]fullerene photocurrent generation system on a DNA scaffold fabricated by a conjugate polymer film

被引：14

作者：

Bae, AH

Hatano, T

Sugiyasu, K

Kishida, T

Takeuchia, M

Shinkai, S ^{[1
]}

机构：

[1] Kyushu Univ, Grad Sch Engn, Dept Chem & Biochem, Fukuoka 8128581, Japan

[2] Univ Tokyo, Sch Engn, Dept Chem & Biotechnol, Tokyo 1138656, Japan

来源：

TETRAHEDRON LETTERS | 2005年 / 46卷 / 18期

关键词：

conjugate polymer; DNA; electrochemical polymerization; fullerene; porphyrin;

D O I：

10.1016/j.tetlet.2005.03.059

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

DNA which binds monocationic [60]fullerene (1) and tetracationic porphyrin (TMPyP) was readily fabricated by electrochemical oxidative polymerization of 3.4-ethylenedioxythiophene (EDOT) and the resultant poly(EDOT) composite was deposited on an ITO electrode as a stable thin film. Spectral and CV analyses established that one I and one TMPyP are bound per 57 nucleobase units, that is, every three pitches of DNA. Photoirradiation of this 1/TMPyP/DNA-poly(E DOT) film generated a photocurrent in 3.8) quantum yield, which was much higher than those obtained from 1/DNA and TMPyP/DNA systems. One can conclude, therefore that the photoexcited energy of TMPyP is transferred to 1, which is collected by the electron-conducting poly(EDOT) film. The present paper shows that DNA is useful as a scaffold to arrange redox-active couples in a one-dimensional matrix. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：3169 / 3173

页数：5

共 28 条

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