| Cage and ladder structures of silsesquioxanes characterized by UV-MALDI-TOF mass spectrometry |
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| 作者姓名： | 尤宏 胡立江 刘琰 张兴文 张皓 |
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| 作者单位： | Dept. of Environmental Engineering，Harbin Institute of Technology，Harbin 150001，China，Dept. of Applied Chemistry，Harbin Institute of Technology，Harbin 150001，China，Dept. of Environmental Engineering，Harbin Institute of Technology，Harbin 150001，China，Dept. of Environmental Engineering，Harbin Institute of Technology，Harbin 150001，China，Dept. of Applied Chemistry，Harbin Institute of Technology，Harbin 150001，China |
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| 基金项目： | Sponsored by the Foundation of Department of Science and Technology of Heilongjiang Province |
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| 摘 要： | The molar mass distribution of SSO in the first generation derived from the hydrolytic condensation of two trialkoxysilanes, 3- (Methacryloxy) propyl] trimethoxysilane (MPMS) and vinyltrimethoxysilane (VMS), are determined by UV-MALDI-TOF MS. The comparisons of theoretical masses with experimental masses are calculated using the proposed compounds, which are assigned to formulas Tn (OH)_m, T_n (OMe)_y or T_n(OH)_x(OMe)_yT=RSiO_(1.5-(x+y)/2n), R=——(CH_2)_3OOCCH(CH_3)CH_2 and——CHCH_2]. Both the proposed cage and ladder structures of SSO derived from similar sol-gel process of monomers are illustrated. The causes for the difference in structures between SSO_M and SSO_v is discussed as well.
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Cage and ladder structures of silsesquioxanes characterized by UV-MALDI-TOF mass spectrometry |
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| YOU Hong,HU Li-jiang,LIU Yan,ZHANG Xing-wen,ZHANG Hao.Cage and ladder structures of silsesquioxanes characterized by UV-MALDI-TOF mass spectrometry[J].Journal of Harbin Institute of Technology,2003,10(3). |
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| Authors: | YOU Hong HU Li-jiang LIU Yan ZHANG Xing-wen ZHANG Hao |
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| Affiliation: | 1. Dept. of Environmental Engineering, Harbin Institute of Technology, Harbin 150001, China
2. Dept. of Applied Chemistry, Harbin Institute of Technology, Harbin 150001, China |
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| Abstract: | The molar mass distribution of SSO in the first generation derived from the hydrolytic condensation oftwo trialkoxysilanes, 3- ( Methacryloxy ) propyl ] trimethoxysilane ( MPMS ) and vinyltrimethoxysilane ( VMS ) ,are determined by UV-MALDI-TOF MS. The comparisons of theoretical masses with experimental masses arecalculated using the proposed compounds, which are assigned to formulas Tn (OH)m, Tn (OMe)y orTn(OH)x(OMe)yT=RSiO1.5 (x+y)/2n, R=--(CH2)3OOCCH(CH3)CH2 and--CHCH2]. Both theproposed cage and ladder structures of SSO derived from similar sol-gel process of monomers are illustrated. Thecauses for the difference in structures between SSO M and SSO V is discussed as well. |
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| Keywords: | molar mass distribution hydrolytic condensation cage and ladder structure |
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