Luminescence Quenching Behavior of Oxygen Sensing ORMOSIL Films Based on Ruthenium Complex  

作　　者：JIANG Ya-qi LI Zhen ZHONG Zhen-ming CHEN Xi WANG Xiao-ru WONG Kwok-yin 

机构地区：[1]Key Laboratory of Analytical Sciences of Ministry of Education,Department of Chemistry,Xiatnen University,Xiamen 361005,P.R.China [2]Department of Applied Biology and Chemicul Technology,the Hong Kong Polytechnic University,Hunghom,Kowloon,Hong Kong,P.R.China

出　　处：《Chemical Research in Chinese Universities》2001年第4期374-379,共6页高等学校化学研究(英文版)

基　　金：NSFC(No.4001161946)and CRGC joint research project.

摘　　要：An organically modified silicate(ORMOSIL) based optical sensor response to gaseous O2 or O2 dissolved in water is presented. The oxygen sensing film mechanism is based on the principle of fluorescence quenching of tris(4,7-diphenyl-l , 10-phenanthroline) ruthenium ( ) ([Ru(dpp)3]2+), which has been entrapped in a porous ORMOSIL film. In order to establish optimum film-processing parameters, comprehensive investigations, including the effects of the polarity and the hydrophobicity of the sensing film on oxygen quenching response and response time, were carried out. The film hydrophobicity increased as a function of dimethyl-dimethoxysilane (DiMe-DMOS) content, which is correlated with enhanced oxygen sensor performance. The sensor developed in the present work exhibits the advantages of fast response time and good reversibility. The detection limits are 0. 5 % and 0. 3 g/mL for O2 in the gaseous and the aqueous phases, respectively.An organically modified silicate(ORMOSIL) based optical sensor response to gaseous O2 or O2 dissolved in water is presented. The oxygen sensing film mechanism is based on the principle of fluorescence quenching of tris(4,7-diphenyl-l , 10-phenanthroline) ruthenium ( ) ([Ru(dpp)3]2+), which has been entrapped in a porous ORMOSIL film. In order to establish optimum film-processing parameters, comprehensive investigations, including the effects of the polarity and the hydrophobicity of the sensing film on oxygen quenching response and response time, were carried out. The film hydrophobicity increased as a function of dimethyl-dimethoxysilane (DiMe-DMOS) content, which is correlated with enhanced oxygen sensor performance. The sensor developed in the present work exhibits the advantages of fast response time and good reversibility. The detection limits are 0. 5 % and 0. 3 g/mL for O2 in the gaseous and the aqueous phases, respectively.

关 键 词：Organically modified silicate OXYGEN SENSOR Fluorescent quenching 

分 类 号：O657.3[理学—分析化学]