Regiochemistry of Polysilanes Prepared by Ring Opening Polymerization
CARNEGIE-MELLON UNIV PITTSBURGH PA DEPT OF CHEMISTRY
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A series of cyclotetrasilanes bearing varying numbers of methyl and phenyl substituents MenPh8-nSi4, have been prepared and characterized using 1H, 13C, and 29Si 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 29Si 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.
- Organic Chemistry
- Physical Chemistry
- Polymer Chemistry
- Atomic and Molecular Physics and Spectroscopy