A New Completely Condensed Silsesquioxane: Diphenyl-Silsesquioxane
In this paper, diphenyl-silsesquioxane was synthesized and characterized. Firstly, octa-isobutyl silsesquioxane endo-disilanol (OIBS-EDN) containing two Si-OH functions was formed by base-catalyzed cleavage of octa-isobutyl silsesquioxane (OIBS). Then, oligomeric silsesquioxane containing two phenyl functions (DPS) was prepared by adding diphenyldichlorosilane to the solution of OIBS-EDN in right proportion with the presence of trithylamine in THF. The products were characterized by FTIR, 1HNMR, 13CNMR, 29SiNMR, X-ray diffraction, EA, DSC and GPC respectively. The results show that difunctional POSS with clear structure and high yield can be prepared by this process. And a new simple and feasible approach to design and synthesize difunctional POSS was put forward.
Masayuki Nogami, Riguang Jin, Toshihiro Kasuga and Wantai Yang
Q. F. Li et al., "A New Completely Condensed Silsesquioxane: Diphenyl-Silsesquioxane", Advanced Materials Research, Vols. 11-12, pp. 327-330, 2006