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Title: Synthesis and characterization of fluorescent, low-symmetry triphenylene discotic liquid crystals: Tailoring of mesomorphic and optical properties
Authors: Rego, James A.
Kumar, Sandeep
Ringsdorf, H.
Keywords: functionalization
Issue Date: Jul-1996
Publisher: American Chemical Society
Citation: Chemistry of Materials, 1996, Vol.8, p1402-1409
Abstract: A series of monofunctionalized triphenylene-based discotic liquid crystals were synthesized starting from 2-hydroxy-3,6,7,10,11-pentakis(pentyloxy)triphenylene. These compounds are unique in that they possess a single electron-withdrawing group (and consequently a large dipole moment) connected directly to the polyaromatic core. All of the new liquid crystals show a significantly broader range of mesogenicity relative to the parent compound 2,3,6,7,10,11-hexakis(pentyloxy)triphenylene. Moreover, some of the new mesogens exhibit a more ordered mesophase relative to the hexagonal columnar phase (Dh) at lower temperatures. Monofunctionalization of the triphenylene core has a dramatic effect on the photophysical properties of the mesogens such as the color and efficiency of fluorescence.
Description: Restricted Access.
ISSN: 0897-4756
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Copyright: 1996 American Chemical Society
Appears in Collections:Research Papers (SCM)

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