Spiropyran-based liquid crystals: the formation of columnar phases via acid-induced spiro-merocyanine isomerisation.
نویسندگان
چکیده
Hexagonal columnar liquid-crystalline phases are induced for a new fan-shaped spiropyran compound as the result of an acidichromism effect of spiro-merocyanine isomerisation through protonation upon incorporation of 4-methylbenzenesulfonic acid.
منابع مشابه
Coupled molecular motions driven by light or chemical inputs: spiropyran to merocyanine isomerisation followed by pseudorotaxane formation.
We have designed and prepared a new dual stimuli-responsive guest molecule containing a spiropyran fragment and a pyridinium moiety. Acid addition or UV-light irradiation induces guest transformation to a merocyanine isomer, promoting the threading motion through a 24-crown-8 macrocycle and the formation of a [2]pseudorotaxane complex.
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ورودعنوان ژورنال:
- Chemical communications
دوره 45 شماره
صفحات -
تاریخ انتشار 2006