Poly(Bis-Alkoxyphenylsilanes): Thermo and Solvatochromic Behavior
Abstract
The first soluble poly(bis alkoxyphenylsilanes) have been prepared and characterized. The UV spectra of the bis-p-alkoxyphenyl derivatives show a strong absorption at unexpectedly short wavelengths. These materials are thermochromic and at higher temperatures their spectra resemble those reported for the bis p-alkylphenyl derivatives. On the basis of these results, we propose that the silicon backbone of the poly(bis-p-alkoxyphenylsilanes) is substantially nonplanar at room temperature possibly due to unfavorable dipolar substituent interactions in the planar zigzag form. This suggestion is supported by studies on the corresponding m-alkoxyphenyl derivatives and unsymmetrical alkoxphenyl substituted diaryl polysilanes. These latter materials also show solvatochromic spectral changes due to conformer redistribution. Absorption characteristics, Chain conformations, Solvatochromism, Silanes, Phenyl radicals.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1988
- Accession Number
- ADA199097
Entities
People
- R. D. Miller
- R. Sooriyakumaran
Organizations
- International Business Machines Corporation (Armonk, NY)