Polypyrrole thin films as sensors of volatile organic compounds

被引：1
|
作者：
De Souza, JEG [1 ]
Dos Santos, MVB
Dos Santos, FL
Neto, BB
Dos Santos, CG
De Melo, CP
机构：
[1] Univ Catolica Pernambuco, BR-50050900 Recife, PE, Brazil
[2] Univ Fed Pernambuco, BR-50670901 Recife, PE, Brazil
来源：
MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 2002年 / 374卷
关键词：
polypyrrole; gas sensors; in situ polymerization; thin films;
D O I：
10.1080/10587250210448
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Thin films of polypyrrole (PPY), doped with different counter-ions and prepared by in situ polymerization on conducting glass electrodes, are used for the development of gas sensors with fast response time. On exposure to a given vapor, each individual film exhibits a fast change of the fractional difference of its electrical resistivity;, by adopting a sensor array composed of 4 differently doped PPY films it was possible to detect and identify simple organic solvents. The Principal Components Analysis (PCA) was adopted for the pattern recognition process and the first two principal components were sufficient to produce an explained variance of 98,1%.
引用
收藏
页码：521 / 526
页数：6
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