Please use this identifier to cite or link to this item: https://doi.org/10.1080/02678290210126040
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dc.titleEffect of electron donor-acceptor interaction on the thermal stability of supramolecular side chain liquid crystalline polymers based on poly(3-carboxypropylmethylsiloxane)
dc.contributor.authorLi, X.
dc.contributor.authorGoh, S.H.
dc.contributor.authorLai, Y.H.
dc.date.accessioned2014-06-23T05:37:29Z
dc.date.available2014-06-23T05:37:29Z
dc.date.issued2002
dc.identifier.citationLi, X., Goh, S.H., Lai, Y.H. (2002). Effect of electron donor-acceptor interaction on the thermal stability of supramolecular side chain liquid crystalline polymers based on poly(3-carboxypropylmethylsiloxane). Liquid Crystals 29 (5) : 675-685. ScholarBank@NUS Repository. https://doi.org/10.1080/02678290210126040
dc.identifier.issn02678292
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/76014
dc.description.abstractSupramolecular side chain liquid crystalline polymers were prepared from poly(3-carboxy-propylmethylsiloxane) (PSI100) and azobenzene-based derivatives through intermolecular hydrogen bonding between the carboxylic acid groups of PSI100 and the imidazole rings in the azobenzene-based derivatives. The presence of H-bonding was confirmed using FTIR spectroscopy. The polymeric complexes behave as liquid crystalline polymers and exhibit nematic mesophases identified on the basis of the observation of Schlieren textures. The mesogenic behaviour of these complexes was studied by polarizing optical microscopy and X-ray diffraction. The thermal behaviour of the complexes was investigated by differential scanning calorimetry. On increasing the spacer length, the transition temperatures initially increase. A further increase in spacer length, however, leads to a decrease in the transition temperatures. The electron donor-acceptor interaction between unlike mesogenic units in supramolecular copolymeric complexes helps to stabilize the mesophase.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1080/02678290210126040
dc.sourceScopus
dc.typeArticle
dc.contributor.departmentCHEMISTRY
dc.description.doi10.1080/02678290210126040
dc.description.sourcetitleLiquid Crystals
dc.description.volume29
dc.description.issue5
dc.description.page675-685
dc.description.codenLICRE
dc.identifier.isiut000175595100010
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