Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | HSU, CS | en_US |
dc.contributor.author | SHIH, LJ | en_US |
dc.contributor.author | HSIUE, GH | en_US |
dc.date.accessioned | 2014-12-08T15:04:30Z | - |
dc.date.available | 2014-12-08T15:04:30Z | - |
dc.date.issued | 1993-06-07 | en_US |
dc.identifier.issn | 0024-9297 | en_US |
dc.identifier.uri | http://hdl.handle.net/11536/2983 | - |
dc.description.abstract | The 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.iso | en_US | en_US |
dc.title | SYNTHESIS OF LIQUID-CRYSTALLINE POLYSILOXANES AND POLYMETHACRYLATES WITH BROAD TEMPERATURE RANGES OF THE CHIRAL SMECTIC-C PHASE | en_US |
dc.type | Article | en_US |
dc.identifier.journal | MACROMOLECULES | en_US |
dc.citation.volume | 26 | en_US |
dc.citation.issue | 12 | en_US |
dc.citation.spage | 3161 | en_US |
dc.citation.epage | 3167 | en_US |
dc.contributor.department | 應用化學系 | zh_TW |
dc.contributor.department | Department of Applied Chemistry | en_US |
dc.identifier.wosnumber | WOS:A1993LG45300028 | - |
dc.citation.woscount | 39 | - |
Appears in Collections: | Articles |
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