Charge transfer effect in the polyaniline-gold nanoparticle memory system

被引：147

作者：

Tseng, Ricky J. ^{[1
]}

Baker, Christina O.

Shedd, Brian

Huang, Jiaxing

Kaner, Richard B.

Ouyang, Jianyong

Yang, Yang

机构：

[1] Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA

[2] Univ Calif Los Angeles, Dept Chem & Biochem, Los Angeles, CA 90095 USA

[3] Univ Calif Los Angeles, Dept Mech & Aerosp Engn, Los Angeles, CA 90095 USA

[4] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA

[5] Univ Calif Berkeley, Miller Inst Basic Res Sci, Berkeley, CA 94720 USA

来源：

APPLIED PHYSICS LETTERS | 2007年 / 90卷 / 05期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1063/1.2434167

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A composite system comprised of polyaniline nanofibers bonded with gold nanoparticles is shown to possess a memory effect via a charge transfer mechanism. The charge transfer occurs between the imine nitrogen in the polyaniline and the gold nanoparticles as confirmed by x-ray photoelectron spectroscopy and Raman spectroscopy. This charge transfer enables a bistable electrical conductivity, allowing the material system to be used as a digital memory device. The charge transfer is further confirmed by the elimination of the conductance switching when the fully reduced form of polyaniline, leucoemeraldine, which possesses no imine nitrogens, is used in place of the emeraldine form.

引用

页数：3

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