THERMOTROPIC AND LYOTROPIC COPOLYMERS OF BIS(DIOXYPHENYL) SILANES

Authors
RAY DJ LAINE RM ROBINSON TR VINEY C
Citation
Dj. Ray et al., THERMOTROPIC AND LYOTROPIC COPOLYMERS OF BIS(DIOXYPHENYL) SILANES, Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals, 225, 1993, pp. 153-165
Citations number
30
Categorie Soggetti
Crystallography
Journal title
Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals → ACNP
ISSN journal
1058725X
Volume
225
Year of publication
1993
Pages
153 - 165
Database
ISI
SICI code
1058-725X(1993)225:<153:TALCOB>2.0.ZU;2-Y
Abstract
Novel inorganic polymers are synthesized from two-component and three- component solutions of bis(1,2-dioxyphenyl) silane. bis(4-t-butyl-1.2- dioxyphenyl) silane and 1,4-dihydroxybenzene (hydroquinone). Molecular modeling predicts that these polymers have extended, linear conformat ions. Thermotropic nematic liquid crystalline phases are identified by transmitted polarized light microscopy. Additionally, lyotropic nemat ic phases are formed by polymers dissolved in xylene. Further characte rization by diffuse reflectance infrared fourier transform (DRIFT) spe ctroscopy and differential scanning calorimetry is described.