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dc.contributor.authorHSU, CSen_US
dc.contributor.authorSHIH, LJen_US
dc.contributor.authorHSIUE, GHen_US
dc.date.accessioned2014-12-08T15:04:30Z-
dc.date.available2014-12-08T15:04:30Z-
dc.date.issued1993-06-07en_US
dc.identifier.issn0024-9297en_US
dc.identifier.urihttp://hdl.handle.net/11536/2983-
dc.description.abstractThe synthesis of side-chain liquid crystalline polysiloxanes and polymethacrylates containing oligooxyethylene spacers and 4-(S)-2-methyl-1-butyl [[(4-hydroxybiphenyl-4'-yl)carbony;]oxy]benzoate mesogenic side groups is presented. Differential scanning calorimetry, optical polarizing microscopy, and X-ray diffraction measurements reveal chiral smectic mesomorphism for all polymers. All three polysiloxanes present enantiotropic smectic A and chiral smectic C phases. The chiral smectic C phase covers a very broad temperature range (about 200-degrees-C). Among polymethacrylates prepared in this study, the polymethacrylate which contains three oxyethylene units in its spacer is the only one revealing smectic A and chiral smectic C phases. The results seem to demonstrate that the tendency toward a chiral smectic C phase increases with increasing the flexibility of the polymer backbone and the oligooxyethylene spacer can increase dramatically the thermal stability of the chiral smectic C phase.en_US
dc.language.isoen_USen_US
dc.titleSYNTHESIS OF LIQUID-CRYSTALLINE POLYSILOXANES AND POLYMETHACRYLATES WITH BROAD TEMPERATURE RANGES OF THE CHIRAL SMECTIC-C PHASEen_US
dc.typeArticleen_US
dc.identifier.journalMACROMOLECULESen_US
dc.citation.volume26en_US
dc.citation.issue12en_US
dc.citation.spage3161en_US
dc.citation.epage3167en_US
dc.contributor.department應用化學系zh_TW
dc.contributor.departmentDepartment of Applied Chemistryen_US
dc.identifier.wosnumberWOS:A1993LG45300028-
dc.citation.woscount39-
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