Self-assembled dye-DNA network and its photoinduced electrical conductivity

被引：30

作者：

Gu, JH ^{[1
]}

Tanaka, S ^{[1
]}

Otsuka, Y ^{[1
]}

Tabata, H ^{[1
]}

Kawai, T ^{[1
]}

机构：

[1] Osaka Univ, Inst Sci & Ind Res, Osaka 5640047, Japan

来源：

APPLIED PHYSICS LETTERS | 2002年 / 80卷 / 04期

关键词：

D O I：

10.1063/1.1435805

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

DNA molecules [poly(dG-dC).poly(dG-dC)] were modified with acridine orange (AO). Direct measurement of the electrical characteristics of the AO-DNA network were performed using a conducting atomic-force microscope (AFM) with a gold coated tip, a second gold electrode being electrically contacted to the dye-DNA/mica surface. Enhancement of electrical conductivity was observed while irradiating the sample with visible light. The results indicated that excited AO obtains an electron from the G site and eventually a hole is generated. (C) 2002 American Institute of Physics.

引用

页码：688 / 690

页数：3