Can an intact and crystalline octakis(methacryloxypropyl) silsesquioxane be prepared by hydrolysis-condensation of a trimethoxysilane precursor?

Jun Peng; Kai Xu; Hualun Cai; Jiancheng Wu; Weihong Lin; Zhiwei Yu; Mingcai Chen

doi:10.1039/C3RA46981F

Can an intact and crystalline octakis(methacryloxypropyl) silsesquioxane be prepared by hydrolysis-condensation of a trimethoxysilane precursor?†

Jun Peng,^ab Kai Xu,*^a Hualun Cai,*^a Jiancheng Wu,^ab Weihong Lin,^ab Zhiwei Yu^ab and Mingcai Chen^a

* Corresponding authors

^a Guangdong Provincial Key Laboratory of Organic Polymer Materials for Electronics, Guangzhou Institute of Chemistry, Chinese Academy of Sciences, P. O. BOX 1122, Guangzhou 510650, People's Republic of China
E-mail: xk@gic.ac.cn
Fax: +86 20 85231058
Tel: +86 20 85232302

^b University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China

Abstract

We explore in detail what exactly the structure of octakis(methacryloxypropyl) silsesquioxane is. The study was performed by carrying out a modified hydrolysis-condensation of (3-methacryloxypropyl)trimethoxysilane. And pure cube-like octakis(methacryloxypropyl) silsesquioxane (CMSQ-T₈) has been synthesized and isolated with high yields (up to 85%), which is a great improvement on other literature routes. Octakis(methacryloxypropyl) silsesquioxane is a colorless, crystalline solid with a melting point of 69–69.5 °C. The precise structure of the octakis(methacryloxypropyl) silsesquioxane, characterized by ¹H NMR, ²⁹Si NMR, Maldi-Tof MS and WAXD is completely reported. Then, the polymerization behaviors of CMSQ-T₈ and T_10–12 analogues (CMSQ-T_10–12) were studied by DSC, UV-vis, and FT-IR. CMSQ-T₈ showed a better thermal stability. Due to the high reactivity of methacryloxypropyl, the octakis(methacryloxypropyl) silsesquioxane could be further functionalized to introduce other functionalities, which offers an alternative way to the formation of novel functional cube-like silsesquioxanes.

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DOI: https://doi.org/10.1039/C3RA46981F
Article type: Paper
Submitted: 24 Nov 2013
Accepted: 02 Jan 2014
First published: 07 Jan 2014

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RSC Adv., 2014,4, 7124-7131

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Can an intact and crystalline octakis(methacryloxypropyl) silsesquioxane be prepared by hydrolysis-condensation of a trimethoxysilane precursor?

J. Peng, K. Xu, H. Cai, J. Wu, W. Lin, Z. Yu and M. Chen, RSC Adv., 2014, 4, 7124 DOI: 10.1039/C3RA46981F

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Can an intact and crystalline octakis(methacryloxypropyl) silsesquioxane be prepared by hydrolysis-condensation of a trimethoxysilane precursor?†

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Can an intact and crystalline octakis(methacryloxypropyl) silsesquioxane be prepared by hydrolysis-condensation of a trimethoxysilane precursor?

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