Please use this identifier to cite or link to this item: https://doi.org/10.1039/c2jm31684f
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dc.titleLarge core-expanded triazatruxene-based discotic liquid crystals: Synthesis, characterization and physical properties
dc.contributor.authorYe, Q.
dc.contributor.authorChang, J.
dc.contributor.authorShao, J.
dc.contributor.authorChi, C.
dc.date.accessioned2014-10-16T08:32:30Z
dc.date.available2014-10-16T08:32:30Z
dc.date.issued2012-07-14
dc.identifier.citationYe, Q., Chang, J., Shao, J., Chi, C. (2012-07-14). Large core-expanded triazatruxene-based discotic liquid crystals: Synthesis, characterization and physical properties. Journal of Materials Chemistry 22 (26) : 13180-13186. ScholarBank@NUS Repository. https://doi.org/10.1039/c2jm31684f
dc.identifier.issn09599428
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/94133
dc.description.abstractTwo new discotic liquid crystals based on the triazatruxene core, TAT-1 and TAT-2, have been constructed using diamine-diketone condensation as the key expansion step with different solubilizing chains attached at the periphery. The new mesogens possess good thermal stability and show columnar liquid crystalline properties. Upon expansion of the core size, TAT-2 is found to have a strong tendency to aggregate both in solution and in thin film. Their optical properties, electronic properties and thermal behaviour are investigated by various techniques. They are found to respond to protons due to protonation of the pyrazine rings in the conjugation system and an obvious colour change is observed upon protonation. These new molecules are also found to possess a weak intramolecular charge transfer (ICT) nature and a weak ICT band can be observed on the UV-vis absorption spectra. The charge transport properties of TAT-1 and TAT-2 have been measured by a space-charge limited-current technique and the highest mobilities obtained for TAT-1 and TAT-2 are 0.14 cm 2 V -1 s -1 and 0.69 cm 2 V -1 s -1, respectively. © 2012 The Royal Society of Chemistry.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1039/c2jm31684f
dc.sourceScopus
dc.typeArticle
dc.contributor.departmentCHEMISTRY
dc.description.doi10.1039/c2jm31684f
dc.description.sourcetitleJournal of Materials Chemistry
dc.description.volume22
dc.description.issue26
dc.description.page13180-13186
dc.description.codenJMACE
dc.identifier.isiut000305242300032
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