Polyaniline nanofiber gas sensors: Examination of response mechanisms

被引：983

作者：

Virji, S

Huang, JX

Kaner, RB ^{[1
]}

Weiller, BH

机构：

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

[2] Univ Calif Los Angeles, Calif NanoSyst Inst, Los Angeles, CA 90095 USA

[3] Aerosp Corp, Space Mat Lab, Mat Proc & Evaluat Dept, Los Angeles, CA 90009 USA

来源：

NANO LETTERS | 2004年 / 4卷 / 03期

关键词：

D O I：

10.1021/nl035122e

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Using a new interfacial polymerization method for the synthesis of polyaniline nanofibers, we have developed nanofiber sensors and compared them to conventional polyaniline sensors. Five different response mechanisms are explored: acid doping (HCl), base dedoping (NH3), reduction (with N2H4), swelling (with CHCl3), and polymer chain conformational changes (induced by CH3OH). In all cases, the polyaniline nanofibers perform better than conventional thin films, Their high surface area, porosity and small diameters enhance diffusion of molecules and dopants into the nanofibers.

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收藏

页码：491 / 496

页数：6

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