Energy Transfer in a pi-Conjugated Liquid Crystalline Molecule with Two Chromophores of Rigid Biphenyl Core and Pyrene Head Moieties

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We investigate the energy transfer of a highly ordered pi-conjugated liquid crystalline molecule containing two chromophores of biphenyl and pyrene moiety, in which the molecule was prepared by esterification of fluorinated biphenyl compound and 1-pyrenebutanol. DSC, POM and XRD results show that this molecule forms a highly ordered smectic liquid crystalline mesophase, in which the pi-conjugated molecule was strongly packed together over large-areas. We show that the liquid crystalline bi-chromophoric systems with highly ordered structure exhibit the energy hopping and transfer to the chromophore with the energetically lowest S(1) state. From the single-molecule spectroscopy of the biphenyl and pyrene chromophore in solution, we show an intramolecular energy transfer from biphenyl to pyrene moieties. In solid thin film, highly ordered structure of the liquid crystal plays a significant role in the formation of the excimer and perfect energy transfer between the chromophores.
Publisher
AMER SCIENTIFIC PUBLISHERS
Issue Date
2009-12
Language
English
Article Type
Article; Proceedings Paper
Keywords

DONOR-ACCEPTOR SYSTEMS; SUPRAMOLECULAR COLUMNS

Citation

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, v.9, no.12, pp.6968 - 6973

ISSN
1533-4880
URI
http://hdl.handle.net/10203/101809
Appears in Collection
NT-Journal Papers(저널논문)CBE-Journal Papers(저널논문)
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