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

Chemical Research in Chinese Universities ›› 2001, Vol. 17 ›› Issue (4): 374-379.

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

JIANG Ya-qi¹, LI Zhen¹, ZHONG Zhen-ming¹, CHEN Xi¹, WANG Xiao-ru¹, WONG Kwok-yin²

1. Key Laboratory of Analytical Sciences of Ministry of Education, Department of Chemistry, Xiarnen University, Xiamen 361005, P. R. China;
2. Department of Applied Biology and Chemical Technology, the Hong Kong Polytechnic University, Hunghom, Kowloon, Hong Kong, P. R. China

Received:2001-09-10 Online:2001-12-24 Published:2011-08-04
Supported by:
Supported by the NSFC(No.4001161946) and CRGC joint research project.

Abstract

Abstract: 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-1,10-phenanthroline) ruthenium (Ⅱ)([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 dimethyldimethoxysilane (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 0.50% and 0.3μg/Ml for O₂ in the gaseous and the aqueous phases, respectively.

Key words: Organically modified silicate, Oxygen, Sensor, Fluorescent quenching

JIANG Ya-qi, LI Zhen, ZHONG Zhen-ming, CHEN Xi, WANG Xiao-ru, WONG Kwok-yin. Luminescence Quenching Behavior of Oxygen Sensing ORMOSIL Films Based on Ruthenium Complex[J]. Chemical Research in Chinese Universities, 2001, 17(4): 374-379.

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

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