Chiral Induction in Liquid Crystals with Dopants Derived from 1-Phenyl-2-Aminoalcohols

New chiral additives derived from 1-phenyl-2-aminoalcohols have been prepared and tested. Especially ephedrine and pseudoephedrine as chiral auxiliaries with two asymmetric C atoms offer functional groups of divergent reactivity. Dopants prepared by acylation with promesogenic agents can be used in...

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Published inMolecular Crystals and Liquid Crystals Vol. 588; no. 1; pp. 51 - 60
Main Authors Kuschel, Frank, Hartmann, Lutz, Bauer, Monika, Weissflog, Wolfgang
Format Journal Article
LanguageEnglish
Published Philadelphia Taylor & Francis Group 01.01.2014
Taylor & Francis Ltd
Subjects
Additives
Aminoalcohols
Atoms & subatomic particles
bistable displays
cholesteric
Devices
Dopants
Double layer
Electric properties
Electro-optics
LCDs
Liquid crystal displays
Liquid crystals
Luminance
Optical properties
photostability
Surface layer
Texture
Trace elements
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Abstract New chiral additives derived from 1-phenyl-2-aminoalcohols have been prepared and tested. Especially ephedrine and pseudoephedrine as chiral auxiliaries with two asymmetric C atoms offer functional groups of divergent reactivity. Dopants prepared by acylation with promesogenic agents can be used in various electro-optic devices. A specific utilization concerns bistable cholesteric liquid crystal displays with stacked double layer construction in order to enhance the luminance of reflected light. Further, the solubility in nematic mixtures, the long term phase behavior, the dopant's impact on textures and phase behavior, the electro-optic response and the photostability of cholesteric mixtures have been investigated.
AbstractList New chiral additives derived from 1-phenyl-2-aminoalcohols have been prepared and tested. Especially ephedrine and pseudoephedrine as chiral auxiliaries with two asymmetric C atoms offer functional groups of divergent reactivity. Dopants prepared by acylation with promesogenic agents can be used in various electro-optic devices. A specific utilization concerns bistable cholesteric liquid crystal displays with stacked double layer construction in order to enhance the luminance of reflected light. Further, the solubility in nematic mixtures, the long term phase behavior, the dopant's impact on textures and phase behavior, the electro-optic response and the photostability of cholesteric mixtures have been investigated.
New chiral additives derived from 1-phenyl-2-aminoalcohols have been prepared and tested. Especially ephedrine and pseudoephedrine as chiral auxiliaries with two asymmetric C atoms offer functional groups of divergent reactivity. Dopants prepared by acylation with promesogenic agents can be used in various electro-optic devices. A specific utilization concerns bistable cholesteric liquid crystal displays with stacked double layer construction in order to enhance the luminance of reflected light. Further, the solubility in nematic mixtures, the long term phase behavior, the dopant's impact on textures and phase behavior, the electro-optic response and the photostability of cholesteric mixtures have been investigated. [PUBLICATION ABSTRACT]
Author Bauer, Monika
Weissflog, Wolfgang
Hartmann, Lutz
Kuschel, Frank
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Snippet New chiral additives derived from 1-phenyl-2-aminoalcohols have been prepared and tested. Especially ephedrine and pseudoephedrine as chiral auxiliaries with...
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SubjectTerms Additives
Aminoalcohols
Atoms & subatomic particles
bistable displays
cholesteric
Devices
Dopants
Double layer
Electric properties
Electro-optics
LCDs
Liquid crystal displays
Liquid crystals
Luminance
Optical properties
photostability
Surface layer
Texture
Trace elements
Title Chiral Induction in Liquid Crystals with Dopants Derived from 1-Phenyl-2-Aminoalcohols
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