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Study on the Fluorescence Behavior of Organically Modified Sol-Gel Oxygen Sensing Films of Ruthenium (Ⅱ) Complexes

  • 2013-09-22
  • 236.56KB
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           This paper investigates the organically modified sol-gel (sol2gel) oxygen fluorescence sensitive sensing membrane prepared using methylsiloxane (TMOS) and dimethyldimethoxysilane (DiMe2DMOS) as co-precursors, compares the fluorescence behaviors of Ru complexes with five different ligands in solvents of different polarities and in sol2gel membranes, and investigates the effect of changes in membrane polarity on the fluorescence spectra of Ru compounds, as well as the degree of fluorescence quenching of Ru compounds encapsulated in organically modified sol2gel with different polarities. The results show that in the sol2gel membrane, the fluorescence lifetime of Ru compounds increases to varying degrees, and the degree of quenching by oxygen increases. In addition, the polarity of the membrane also has a great influence on the degree of oxygen quenching. Increasing the hydrophobicity of the membrane will improve the response of the sensing membrane to oxygen concentration. Keywords: sol-gel; organic modification; ruthenium complex; oxygen sensor

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