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Dielektrisches Verhalten nematischer 2,3,5-substituierte 1,4-Bis(4-n-octyloxy-benzoyloxy)benzene

✍ Scribed by Horst Kresse; Kerstin Worm; Wolfgang Weissflog

Publisher: Wiley (John Wiley & Sons)
Year: 2010
Weight: 229 KB
Volume: 25
Category: Article
ISSN: 0044-2402
DOI: 10.1002/zfch.19850250207

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✦ Synopsis

Thermisch induzierte intrainolekulare 14 + 41-Cycloeddition und -reversion von 1,4-Bls(9-acridizinium~l)bi1~n-diperchlorat~) (Y, o-Bis(9-acridiziniumy1)alkan-diperchlorate desaktivieren in verdiinnter Liisung nach elektroniecher Anregung mit Quantenausbeuten pc 5 0,13 unter Bildung von intramolekularen Cyclomeren [l]. Bei der exemplarischen Untersuchung des Reaktionsmechanismus und der fiir die Konstruktion dee Energiezustand-Komelationediegremms [2] notwendigen Reaktionskinetik wurden am Beiapiel 1,4-Bia(S-acridiziniumyl)butan-diperchlorat (I) zwei neue Effekte regiatriert: 1. Die spektroskopische Verfolgung der thermisch induzierten Cyclorevemion photochemisch gebildeten Cyclomers zu I zeigt zwei Zerfdqrozeaae an.

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