期刊
COMPTES RENDUS CHIMIE
卷 13, 期 1-2, 页码 270-281出版社
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.crci.2009.10.007
关键词
Silsesquioxanses; Bifunctional; Janus; Nanoparticles
资金
- NSF [CGE 0740108]
- Canon Ltd
- Mayaterials Inc.
Multiple literature reports describe the synthesis of [RSiO(OH)](4) or [RSiO(ONa)](4) compounds. Surprisingly, in the majority of cases the OH or ONa groups all lie on the same face of the cyclomers or half cubes. Consequently, it appears possible to couple R containing half cubes with R' containing half cubes to form bi-functional (Janus) silsesquioxane cages or cubes We report here synthesis of [PhSiO(ONa)](4) and [p-IPhSiO(ONa)](4) half cubes. We thereafter discuss efforts to react the [PhSiO(ONa)](4) salt with (R = Me, vinyl, and cyclohexyl) RSiCl3 in MeOH to produce the compounds {PhSiO[OSi(OMe)2R]}(4) species which were characterized using traditional spectroscopic procedures These compounds were then subjected to acid catalyzed hydrolysis tohydrolytically remove the OMe groups to generate Janus cubes While it is possible to isolate the target compounds, which were also characterized in detail, the yields were lower than expected perhaps because of competitive hydrolytic cleavage of the Si-O-SiR(OMe)(2) linkage To cite this article: M.Z. Asuncion et al., C. R. Chimie 13 (2010). (C) 2009 Published by Elsevier Masson SAS on behalf of Academie des sciences
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