A novel amphiphilic zinc phthalocyanine LB flms as gas sensor material and its interaction with NH3

被引：11

作者：

Ding, XM

Xu, HJ ^{[1
]}

Zhang, LG

Jiang, DP

Lu, AD

机构：

[1] Acad Sinica, Inst Photog Chem, Beijing 100101, Peoples R China

[2] Chinese Acad Sci, Changchun Inst Phys, Changchun 130021, Peoples R China

来源：

MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 1999年 / 337卷

基金：

中国国家自然科学基金;

关键词：

phthalocyanine; LB films; gas-sensor;

D O I：

10.1080/10587259908023482

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Two kinds of amphiphilic phthalocyanines(AmPc,AmPcZn) have been deposited as smooth and well ordered LB films. Absorption spectra show that AmPc mms are consistent with a stacked cofacial columnar structure while the AmPcZn films consist of aggregates with weakly interacting molecules. These two films exhibit different behavior toward NH3 gas-sensing. AmPcZn films gave strong and fast response on exposure to NH3 whereas AmPc films showed very weak response. It is proposed that coordination of NH3 by AmPcZn results in lowering the energy gap and hence the activation energy of AmpcZn that account for the larger increase in conductance of AmpcZn films compared with AmPc films.

引用

页码：481 / 484

页数：4