Preparation and gas-sensing property of polyaniline based ultrathin films by Langmuir-Blodgett technology

被引：0
|
作者：
Xie, D [1 ]
Jiang, YD
Li, D
Wu, ZM
Li, YR
机构：
[1] Univ Elect Sci & Technol China, Dept Mat Sci & Engn, Chengdu 610054, Peoples R China
[2] Nanjing Univ Sci & Technol, Teaching & Res Sect 313, Nanjing 210094, Peoples R China
来源：
ACTA POLYMERICA SINICA | 2001年 / 02期
关键词：
polyaniline; Langmuir-Blodgett films; nitrogen dioxide; gas-sensitive property;
D O I：
暂无
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Pure polyaniline(emeraldine base form) Langmuir-Blodgett(LB) films and polyaniline and acetic acid mixed LB films with various layers are prepared. The LB films with various layers are characterized by ultraviolet/visible (UV-Vis) spectroscopy. The gas-sensitivity to NO2 Of polyaniline based LB films with different layers are studied. It is found that pure polyaniline LB films show higher sensitivity, responsivity and reversibility to NO2 gas than those of polyaniline and acetic acid mixed LB films. The response time of 3-layer and 15-layer pure polyaniline LB films to 20x16(-6) NO2 gas is about 10 seconds and 30 seconds, respectively. The recovery time of the latter is about 4min.
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页码：224 / 227
页数：4
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