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Silicone-Polyoxometalate (SiPOM) Hybrid Compounds

Published online by Cambridge University Press:  15 February 2011

Dimitris E. Katsoulis  and
John R. Keryk
Dimitris E. Katsoulis
Affiliation:
Dow Corning Corporation, Midland MI 48686, [email protected]
John R. Keryk
Affiliation:
Dow Corning Corporation, Midland MI 48686, [email protected]
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Abstract

Oligomeric and polymeric SiPOM materials have been prepared by reacting trichloro endblocked PDMS [degree of polymerization, ∼ 14 (I) and 60 (II)] with α-K8SiW11O39. NMR and IR spectroscopy show that the POM units are bonded to the siloxane via Si-O-W bonds. The reaction of the short PDMS segment (I) with the POM produces powdery materials, (isolated as tetrabutylammonium salts) while the longer PDMS (II) forms elastomeric materials. For the latter the POM anions act as reinforcing fillers. Other important properties of the hybrid materials are their UV absorbency, their electrochromicity, their electrical properties (volume resistivity, ∼1011 ohm-cm; low loss tangent, memory capability) and their film formation.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 435: Symposium V – Better Ceramics Through Chemistry VII , 1996 , 589
Copyright
Copyright © Materials Research Society 1996

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