Synthesis and properties of (E)-1,2-difluoroethylene derivatives: improvement of the ultraviolet light stability

The synthesis and properties of (E)-α,β-difluorostilbene derivatives were studied. In particular, we investigated three suppression methods of (E)-(Z) isomerisation by shortening the molecular conjugation length, which included the introduction of a fluorine atom into the ortho or para position of t...

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Bibliographic Details
Published inLiquid crystals Vol. 36; no. 8; pp. 799 - 807
Main Authors Yokokoji, Osamu, Miyajima, Takashi, Irisawa, Jun, Shimizu, Tamaki, Inoue, Seiichi
Format Journal Article
LanguageEnglish
Published Abingdon Taylor & Francis 10.09.2009
Taylor & Francis Ltd
Subjects
(E)-α,β-difluorostilbene derivatives
Atoms & subatomic particles
Chemical synthesis
Crystals
Hydrocarbons
isomerisation
molecular conjugation length
Molecules
Ultraviolet radiation
UV photostability
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Summary:The synthesis and properties of (E)-α,β-difluorostilbene derivatives were studied. In particular, we investigated three suppression methods of (E)-(Z) isomerisation by shortening the molecular conjugation length, which included the introduction of a fluorine atom into the ortho or para position of the benzene ring or the replacement of the benzene ring with a cyclohexane ring. The relationship between the molecular structure of liquid crystals and the level of isomerisation by ultraviolet (UV) light was discussed.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0267-8292
1366-5855
DOI:10.1080/02678290903062986