Solid-State 17O NMR Characterization of PDMS-MxOy (M = Ge(IV), Ti(IV), Zr(IV), Nb(V), and Ta(V)) Organic-Inorganic Nanocomposites

详细信息    查看全文

• 作者：Beatriz Juliá ; n ; Christel Gervais ; Marie-No&euml ; lle Rager ; Jocelyne Maquet ; Eloisa Cordoncillo ; Purificació ; n Escribano ; Florence Babonneau ; and Clé ; ment Sanchez
• 刊名：Chemistry of Materials
• 出版年：2004
• 出版时间：February 10, 2004
• 年：2004
• 卷：16
• 期：3
• 页码：521 - 529
• 全文大小：162K
• 年卷期：v.16,no.3(February 10, 2004)
• ISSN：1520-5002

文摘

PDMS-M_xO_y (where M = Ge(IV), Ti(IV), Zr(IV), Nb(V), and Ta(V)) hybrid materials havebeen studied from the solution to the solid state through ¹⁷O NMR spectroscopy. Si-O-Si,Si-O-M, and M-O-M oxo bridges could be identified, giving a better picture of the structureof these hybrid materials based on amorphous metal-oxo nanodomains embedded withinthe siloxane network. The quantitative accuracy of the spectra is investigated and the relativenanoscale phase separation depending on the nature of the metal is discussed.