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    Title: Dibenzo[a,c]phenazine with six-long alkoxy chains to probe optimization of mesogenic behavior
    Authors: Ong, Chi-wi;徐秀福;Hsu, Hsiu-fu;Hwang, Ja-yi;Yzeng, Mei-chun;Liao, Su-chih;Chang, Tsu-hsin
    Contributors: 淡江大學化學學系
    Date: 2007-02-13
    Issue Date: 2009-12-01
    Publisher: Cambridge: Royal Society of Chemistry (RSC)
    Abstract: New hexaalkoxydibenzo[a,c]phenazines (HDBPs) with six-carbon long chains have been prepared, and their mesogenic behavior investigated. The incorporation of six peripheral alkoxy groups onto the larger, dipolar core bearing nitrogen atoms showed interesting thermal properties. The crystal-to-mesophase transitions for the HDBPs (K–col) are similar to the triphenylenes, but the clearing temperatures (Col–I) are shifted upwards by approx. 60 °C. HDBP therefore possesses stable hexagonal mesophases in a fairly broad temperature range and form homeotropically aligned films.
    Relation: Journal of materials chemistry 17(18), pp.1785-1790
    DOI: 10.1039/b617827h
    Appears in Collections:[Graduate Institute & Department of Chemistry] Journal Article

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