Li Ying-Sing, Church Jeffrey S, Woodhead Andrea L, Vecchio Nicolas E, Yang Johnny
Department of Chemistry, University of Memphis, Memphis, TN 38152, USA.
CSIRO Materials Science and Engineering, PO Box 21, Belmont, VIC 3216, Australia.
Spectrochim Acta A Mol Biomol Spectrosc. 2014 Nov 11;132:225-31. doi: 10.1016/j.saa.2014.04.172. Epub 2014 May 9.
Tris-[3-(trimethoxysilyl)propyl] isocyanurate (TTPI) has been used as a precursor to prepare a sol using ethanol as the solvent under acidic conditions. The sol-gel was applied for the surface treatment of aluminum and copper. Infrared and Raman spectra have been recorded for pure TTPI and the TTPI sol, xerogel and TTPI sol-gel coated metals. From the vibrational spectra, TTPI is likely to have the C1 point group. Vibrational assignments are suggested based on group frequencies, the expected reactions in the sol-gel process and the vibrational studies of some related molecules. From the experimental infrared spectra of xerogels annealed at different temperatures and from the thermal-gravimetric analysis, it is found that the TTPI xerogel decomposes at around 450°C with silica being the major decomposition product. A cyclic voltammetric study of the metal electrodes coated with different concentrations of TTPI ranging from 5% to 42% (v/v) has shown that the films with high concentrations of sol would provide better corrosion protection for aluminum and copper.
异氰脲酸三[3-(三甲氧基硅基)丙基]酯（TTPI）已被用作前驱体，在酸性条件下以乙醇为溶剂制备溶胶。该溶胶-凝胶用于铝和铜的表面处理。已记录了纯TTPI以及TTPI溶胶、干凝胶和TTPI溶胶-凝胶涂层金属的红外光谱和拉曼光谱。从振动光谱来看，TTPI可能具有C1点群。基于基团频率、溶胶-凝胶过程中的预期反应以及一些相关分子的振动研究，提出了振动归属。从在不同温度下退火的干凝胶的实验红外光谱以及热重分析发现，TTPI干凝胶在约450°C分解，主要分解产物为二氧化硅。对涂覆有5%至42%（v/v）不同浓度TTPI的金属电极进行的循环伏安研究表明，高浓度溶胶的薄膜能为铝和铜提供更好的腐蚀防护。
