Fourier transform infrared spectroscopy and oxygen luminescence probing combined study of modified sol-gel derived film

被引：61
作者：
Zhu, H [1 ]
Ma, YG [1 ]
Fan, YG [1 ]
Shen, JC [1 ]
机构：
[1] Jilin Univ, Minist Educ, Key Lab Supramol Struct & Spect, Changchun 130023, Peoples R China
来源：
THIN SOLID FILMS | 2001年 / 397卷 / 1-2期
关键词：
vinyl modification; sol-gel; luminescence FT-IR;
D O I：
10.1016/S0040-6090(01)01357-8
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A series of sol-gel-derived silica films are prepared by co-condensation of vinyltrimethoxysilane (VTMOS) and tetraethoxylsilane (TEOS) with various feeding molar ratios of VTMOS to TEOS under the acid-catalyzing conditions. Significant improvements of the performance of film formation are observed in these vinyl modified films. The resultant silica films are characterized by Fourier transform infrared (FT-IR) spectroscopy giving some important structural features. The main Si-O-Si vibrations shift to low wavenumber with increasing VTMOS ratios indicating more open network structures in these vinyl-containing films. The vibration bands of Si-OH (3100-3700 cm(-1)), and especially H2O (1640 cm(-1)), in the silica films are weakened with increasing VTMOS contents, revealing that the introduction of vinyl group into sol-gel systems can increase the degree of condensation and hydrophobicity of porous surface. Luminescence probing of resultant sol-gel films with Ru(bpy)(2+) complex as probe show more rapid and sensitive response to oxygen against standard TEOS-based silica film. The improvement of oxygen-sensing property can correspond to the structural characteristics obtained from IR spectroscopy. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：95 / 101
页数：7
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