Regiochemistry of Polysilanes Prepared by Ring Opening Polymerization

Abstract

A series of cyclotetrasilanes bearing varying numbers of methyl and phenyl substituents Me(n)Ph(8-n)Si4, have been prepared and characterized using (1)H, (13)C, and (29)Si NMR spectroscopy. The cyclotetrasilanes were polymerized employing silyl cuprates as initiators resulting in monomodal polysilanes with interesting regiochemistries. The regiochemistry of the polymerizations was studied by (29)Si NMR spectra of the polymers. The polymers resulting from ring opening polymerization of Me3PH5Si4, Me5Ph3Si4, and Me6Ph2Si4 showed absorbance maxima, Lambda sub max = 343, 332, and 328 nm, respectively.

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Document Details

Document Type
Technical Report
Publication Date
Jun 30, 1994
Accession Number
ADA281041

Entities

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  • Eric Fossum
  • Krzysztof Matyjaszewski

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  • Carnegie Mellon University

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  • Chemistry

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