Poly(trimethylsilylacetylene): a tractable, synthetically manipulable polyacetylene derivative
Conference
·
OSTI ID:7063451
A soluble, synthetically manipulable polyacetylene derivative, poly(trimethylsilylacetylene) (PTMSA) (C(Si)CH/sub 3/)/sub 3/=CH)/sub n/ can be prepared in good yield with molecular weights in excess of 10/sup 5/ by polymerization with a new class of catalysts formed by mixing WCl/sub 6/ with organolithium or organomagnesium reagents. The polymer possesses moderate O/sub 2/ stability and can be reversibly doped with I/sub 2/ vapor to a conductivity of 10/sup -4/ S/cm. The unique ability of silyl substituents to stabilize charged intermediates and undergo ipso substitution allows partial replacement of the silyl groups in PTMSA by both electrophilic and nucleophilic reagents. Thus, desilation of PTMSA with fluoride provides a soluble TMSA-acetylene copolymer. Additional synthetic transformations of PTMSA will be reported along with conductivity data on some of the new materials prepared from PTMSA.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (USA)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 7063451
- Report Number(s):
- SAND-84-0891C; CONF-840805-10; ON: DE84010299
- Country of Publication:
- United States
- Language:
- English
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