Luminescence quenching behavior of oxygen sensing ORMOSIL films based on ruthenium complex

Y. Jiang, Z. Li, Z. Zhong, X. Chen, X. Wang, Kwok Yin Wong

Research output: Journal article publicationJournal articleAcademic researchpeer-review

6 Citations (Scopus)

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 0.5% and 0.3 μg/mL for O2 in the gaseous and the aqueous phases, respectively.
Original languageEnglish
Pages (from-to)374-379
Number of pages6
JournalChemical Research in Chinese Universities
Volume17
Issue number4
Publication statusPublished - 1 Nov 2001
Externally publishedYes

Keywords

  • Fluorescent quenching
  • Organically modified silicate
  • Oxygen
  • Sensor

ASJC Scopus subject areas

  • Chemistry(all)
  • Education

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