Liquid-crystalline perylene tetracarboxylic bisimide derivatives bearing cyclotetrasiloxane moieties
Journal of Materials Chemistry C Pub Date: 2013-10-07 DOI: 10.1039/C3TC31567C
Abstract
Liquid-crystalline perylene tetracarboxylic bisimide derivatives bearing heptamethylcyclotetrasiloxane moieties have been synthesized. Compound 2 bearing four heptamethylcyclotetrasiloxane moieties exhibits a rectangular columnar phase at room temperature. In the columnar phase, the cyclotetrasiloxane rings interdigitate into neighbouring columns and their interaction promotes the formation of the columnar mesomorphic structure. A time-of-flight measurement reveals that the electron mobility in the columnar phase of compound 2 is on the order of 10?2 cm2 V?1 s?1 at room temperature. Compound 2 is soluble in various organic solvents except for alcohol.
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Journal Name：Journal of Materials Chemistry C
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CAS no.: 89640-58-4
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