2006
DOI: 10.1080/02678290600563153
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Thermotropic liquid crystalline‐cum‐photocrosslinkable poly(benzylidene arylphosphate ester)s containing the cyclopentanone moiety

Abstract: A new class of linear unsaturated polyarylphosphate esters based on dibenzylidene cyclopentanone, possessing liquid crystalline-cum-photocrosslinkable properties has been synthesized from 2,5-bis(m-hydroxyalkyloxybenzylidene)cyclopentanone (m56,8,10) with various aryl phosphorodichloridates (aryl5phenyl, naphthyl, biphenyl) in chloroform at ambient temperature. Their chemical structures were confirmed by FTIR, and 1 H, 13 C and 31 P NMR spectroscopy. Intrinsic viscosity showed that all the polymers were materi… Show more

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Cited by 15 publications
(2 citation statements)
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“…The rate of photo-crosslinking becomes greater with the increase in methylene segments from 2 to 10 in the polymer chain, which is due to the folding tendency of the methylene units present in the polymer chain that brings the mesogen (stilbene) units closer, leading to faster photo-crosslinking reaction [32]. Polymer Ia, containing dimethylene unit, crosslinked at a slower rate and the absorption band at 280 nm completely disappeared in 17 min.…”
Section: Photo-crosslinking Studiesmentioning
confidence: 98%
“…The rate of photo-crosslinking becomes greater with the increase in methylene segments from 2 to 10 in the polymer chain, which is due to the folding tendency of the methylene units present in the polymer chain that brings the mesogen (stilbene) units closer, leading to faster photo-crosslinking reaction [32]. Polymer Ia, containing dimethylene unit, crosslinked at a slower rate and the absorption band at 280 nm completely disappeared in 17 min.…”
Section: Photo-crosslinking Studiesmentioning
confidence: 98%
“…HERMOTROPIC liquid-crystalline polyesters have drawn a great deal of attention in recent years, focusing their structure-property relationship [1], [2]. Introduction of methylene spacer with long substituents unit as pendent group in the polymer chain can reduce the melting transition temperature while maintaining liquid crystalline properties.…”
Section: Introductionmentioning
confidence: 99%