標題: SYNTHESIS OF HIGH-TEMPERATURE MESOMORPHIC POLYSILOXANES AND THEIR USE AS STATIONARY PHASES FOR HIGH-RESOLUTION GAS-CHROMATOGRAPHY
作者: LIN, JL
HSU, CS
應用化學系
Department of Applied Chemistry
關鍵字: LIQUID CRYSTALLINE POLYMERS;MESOMORPHIC POLYSILOXANES;GAS CHROMATOGRAPHY;LIQUID CRYSTAL STATIONARY PHASES
公開日期: 1993
摘要: Two new liquid crystalline polysiloxanes with very wide mesomorphic temperature range have been prepared. One containing 4-[(S)-2-methyl-1-butoxy]phenyl 4-hexanyloxy-biphenyl-4'-carboxylate side groups displays enantiotropic smectic A, chiral smectic C and smectic B phases. The other containing (S)-2-methyl-1-butyl 6-(4-undecanyloxybiphenyl-4'-carbonyloxy)-2-naphthalenecarboxylate side groups exhibits only an enantiotropic cholesteric phase. Both mesomorphic polysiloxanes were used as stationary phases in gas chromatography capillary columns. They show very unique separating properties for various isomeric halogenated naphthalene compounds, methylanthracene compounds, fatty acid methyl esters and polycyclic aromatic compounds.
URI: http://hdl.handle.net/11536/3197
ISSN: 0032-3896
期刊: POLYMER JOURNAL
Volume: 25
Issue: 2
起始頁: 153
結束頁: 167
顯示於類別:期刊論文


文件中的檔案:

  1. A1993KN22600005.pdf