Silsesquioxane-Based Amphiphiles
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- 作者：Ralf Knischka ; Frank Dietsche ; Ralf Hanselmann ; Holger Frey ; Rolf Mü ; lhaupt ; and Pierre J. Lutz
- 刊名：Langmuir
- 出版年：1999
- 出版时间：July 6, 1999
- 年：1999
- 卷：15
- 期：14
- 页码：4752 - 4756
- 全文大小：133K
- 年卷期：v.15,no.14(July 6, 1999)
- ISSN：1520-5827
文摘
A novel type of amphiphilic spherosilsesquioxane derivative, 1-(1,
rs/omega.gif" BORDER=0 >-propylenemethoxy)oligo(ethyleneoxide)-3,5,7,9,11,13,15-heptahydridopentacyclo[9.5.13,9.15,15.17,13]octasiloxane has been prepared from(HSiO3/2)8 and allyl-functional oligo(ethyleneoxide) (Mn = 750 g/mol) by hydrosilylation. The monosubstitutedoctahydridosilsesquioxane was characterized by 1H, 13C, and 29Si NMR spectroscopy, IR, and MALDI-TOF mass spectroscopy as well as elemental analysis. Surface tension measurements of the water-solubleamphiphile show a cmc in the range of 6 × 10-4 mol/L. Aggregation of the uncondensed amphiphileleads to micellar and vesicular structures that can be cross-linked to liposome-like silica particles atelevated pH.
rs/omega.gif" BORDER=0 >-propylenemethoxy)oligo(ethyleneoxide)-3,5,7,9,11,13,15-heptahydridopentacyclo[9.5.13,9.15,15.17,13]octasiloxane has been prepared from(HSiO3/2)8 and allyl-functional oligo(ethyleneoxide) (Mn = 750 g/mol) by hydrosilylation. The monosubstitutedoctahydridosilsesquioxane was characterized by 1H, 13C, and 29Si NMR spectroscopy, IR, and MALDI-TOF mass spectroscopy as well as elemental analysis. Surface tension measurements of the water-solubleamphiphile show a cmc in the range of 6 × 10-4 mol/L. Aggregation of the uncondensed amphiphileleads to micellar and vesicular structures that can be cross-linked to liposome-like silica particles atelevated pH.