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Plasma polymerization of copper phthalocyanines and application of the plasma polymer films to NO 2 gas sensor device
Author(s) -
Inagaki N.,
Tasaka S.,
Ikeda Y.
Publication year - 1995
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1995.070551010
Subject(s) - polymerization , plasma polymerization , x ray photoelectron spectroscopy , amorphous solid , polymer , copper , polymer chemistry , substituent , thin film , selectivity , chemistry , materials science , analytical chemistry (journal) , organic chemistry , chemical engineering , nanotechnology , catalysis , engineering
Four copper phthalocyanines without substituent (CuPc) and with chlorine (CuPc‐Cl), hydroxymethyl (CuPc‐CH 2 OH), and phthalimidomethyl substituents (CuPc‐CH 2 N‐[C(O)] 2 Ph) were plasma‐polymerized to obtain amorphous and thin films having the extended π‐electron system. The chemical composition of the plasma polymer films was discussed from the data of the electronic spectra, IR spectra, and XPS spectra. The application of the plasma polymer films was discussed with regard to the NO 2 sensitivity, the NO 2 selectivity, the response time, and the reversibility. Plasma polymerization of CuPc, CuPc‐Cl, CuPc‐CH 2 OH, and CuPc‐CH 2 OH gives amorphous films having the extended π‐electron system. In the plasma polymerization process, a part of the extended π‐electron system is broken down. The CH 2 OH and CuPc‐CH 2 N[C(O)] 2 Ph substituents contribute to minimizing the degradation. The Cu atoms liberated from the chelation in the plasma polymerization process exist as CuO in the deposited films. The plasma polymer films of CuPc‐CH 2 OH and CuPc‐CH 2 N[C(O)] 2 Ph show good sensitivity to NO 2 molecules. With regard to the sensitivity, the selectivity, the response time and the reversibility, the plasma polymer films are applicable materials to the NO 2 sensor device. © 1995 John Wiley & Sons, Inc.

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