Department of Chemistry, University of Memphis, Memphis, TN 38152-6060, USA.
Spectrochim Acta A Mol Biomol Spectrosc. 2012 Oct;96:868-73. doi: 10.1016/j.saa.2012.07.019. Epub 2012 Aug 2.
We have prepared a silica sol-gel using triethoxy (4-(trifluoromethyl)-phenyl) silane (TETFMPS) as a precursor in ethanol solution under acidic condition. The prepared sol-gel was applied to the surface treatment of aluminum for corrosion prevention. Infrared and Raman spectra of the silane coupling agent, sol-gel and sol-gel films on metal have been collected. Infrared spectroscopy has been used to study the thermal effect on the chemical composition of xerogel. Results suggested that TETFMPS molecule has a C(s) point group symmetry with the plane of reflection orthogonal to the phenyl ring and the organic part of the sol-gel film remains essentially unchanged at or below 450 °C but decomposes at or above 550 °C. After the decomposition of the organic branch, the remaining film is composed of silica. Vibrational assignments were suggested by using the collected spectroscopic data in different states along with the group vibrational frequencies and other related references.
我们使用三乙氧基(4-(三氟甲基)苯基)硅烷(TETFMPS)作为前驱体，在酸性条件下的乙醇溶液中制备了一种硅溶胶-凝胶。所制备的溶胶-凝胶被应用于铝的表面处理以防止腐蚀。收集了硅烷偶联剂、溶胶-凝胶和金属上的溶胶-凝胶膜的红外和拉曼光谱。红外光谱用于研究热效应对干凝胶化学成分的影响。结果表明，TETFMPS 分子具有 C(s)点群对称性，反射面垂直于苯基环，并且在 450°C 或以下，溶胶-凝胶膜的有机部分基本保持不变，但在 550°C 或以上分解。在有机支链分解后，剩余的薄膜由二氧化硅组成。通过使用不同状态下收集的光谱数据以及基团振动频率和其他相关参考文献，提出了振动分配建议。
