含樟腦衍生基光敏性側鏈型液晶高分子之合成及光學特性探討

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含樟腦衍生基光敏性側鏈型液晶高分子之合成及光學特性探討

Synthesis and Optical Properties of Photo-isomerizable Side Chain Liquid Crystalline Polymers Containing Bornane Derivatives

陳建志 , Masters　　Advisor：劉瑞祥　　

繁體中文

合成；側鏈型液晶高分子；光敏性；樟腦；液晶； photo-isomerizable ； camphor ； synthesis ； liquid crystal ； side chain liquid crystalline polymers

Abstract │ Reference (37) │ Times Cited (4) │ Altmetrics

Abstract 〈TOP〉

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A monomeric liquid crystal with semetic A phase was synthesized from 4-hydroxybenzoic acid. A series of photoisomerizable chiral compounds containing bornyl groups were also synthesized from 4-hydroxybenzaldehyde. Liquid crystalline side chain chiral polymers were synthesized from monomers with mesogenic segment and chiral monomers containing bornyl groups. Thermal properties and optical properties of polymers were all evaluated. Dependence of optical properties of chiral polymers in dilute solvent on UV irradiation was studied. Synthesized compounds were confirmed using FT-IR, NMR, DSC, EA and XRD.

Cholesteric liquid crystal film was fabricated using commercially available ZLI-2293/S811 as the host cholesteric liquid crystal. Dependence of the UV spectrum of the cholesteric LC cells with various chiral dopants synthesized in this investigation on UV exposure was investigated. Photo- isomerization on C=C was confirmed using UV irradiation and it was found that there is no obviously reflected band variation of LC cells by adding chiral dopants with C=C segment synthesized in this investigation. The results suggest that the synthesized chiral dopants with C=C segment may have only weak molecular interaction on LC molecules. A real image recording of the cholesteric liquid crystal cell using UV exposure through a mask was achieved.

Reference ( 37 ) 〈TOP〉

2. F. Reinitzer, Monatshefte fur Chemie 9, 421-41, (1888).
連結：
3. O.Z.Lehmann, Phys. Chem, Vol. 4, 4621, (1889).
連結：
8. 楊博智，“含硝基偶氮苯衍生基光敏性液晶高分子之合成及特性探討” 國立成功大學化工研究所碩士論文，(2003)。
連結：
10. 王宏宇，“含光學活性菠酯基液晶性單體之合成及其在光學元件上之應用研究” 國立成功大學化工研究所博士論文，(2004)。
連結：
11. Stegemeyer, H., Guest Ed., “Liquid Crystals”, 1994, p.116.
連結：

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