标题：Synthesis, structural characterization and properties of a cubic octa-n-propylsilsesquioxane inorganic-organic hybrid material
作者：Liu, Hui; Zhu, Qingzeng; Feng, Lei; Yao, Bingjian; Feng, Shengyu
作者机构：[Liu, Hui; Zhu, Qingzeng; Feng, Lei; Yao, Bingjian; Feng, Shengyu] Shandong Univ, Key Lab Special Funct Aggregated Mat, Minist Educ, Sch Chem & Chem E 更多
通讯作者地址：[Zhu, QZ]Shandong Univ, Key Lab Special Funct Aggregated Mat, Minist Educ, Sch Chem & Chem Engn, Jinan 250100, Peoples R China.
来源：JOURNAL OF MOLECULAR STRUCTURE
关键词：n-Propylsilsesquioxane; Cubic; X-ray single crystal diffraction;; Sublimate; TGA
摘要：Synthesis, structural characterization and property studies were carried out on cubic octa-n-propylsilsesquioxanes (n-Pr-POSS) in this paper. n-Pr-POSS was synthesized by an acid-catalyzed hydrolytic condensation of n-propyltriethoxysilane with a 68.9% yield. Common organic solvents, such as benzene, chloroform, tetrahydrofuran, diethyl ether, dichloromethane, toluene, cyclohexane, hexane and pentane can be used to dissolve n-Pr-POSS; however, n-Pr-POSS is insoluble or poorly soluble in acetone, dichloroethane, chlorobenzene, dimethylformamide, xylene, methanol, alcohol and isopropanol. The cubic structure and crystal morphology of n-Pr-POSS have been investigated by Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), optical microscope, H-1, C-13 and Si-29 nuclear magnetic resonance (NMR), X-ray single crystal diffraction and X-ray powder diffraction (XRD) methods. Crystalline n-Pr-POSS is a triclinic system crystal with a P-1 space group. Thermogravimetric analysis (TGA) indicates that n-Pr-POSS begins to sublimate above 200 degrees C and does not decompose until 524 degrees C under a nitrogen atmosphere. (c) 2012 Elsevier B.V. All rights reserved.