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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/25172


    Title: Rapid synthesis of new discotic liquid crystal based on Diquinoxalino[2,3-a:2’3’-c]phenazine Containing Hexakis(alkoxy) side arms
    Authors: 徐秀福;Hsu, Hsiu-fu;Ong, Chi Wi;Liao, Su-Chih;Chang, Tsu Hsing
    Contributors: 淡江大學化學學系
    Date: 2003-02-10
    Issue Date: 2009-12-01
    Publisher: Elsevier
    Abstract: The condensation of 1,2-bisalkoxy-4,5-diaminobenzene 2a–e derivatives with freshly prepared hexaketocyclohexane give hexakis(alkoxy)diquinoxalino[2,3-a:2′,3′-c]phenazines in good yield. DSC and polarization microscopy showed HATOC6 has both the crystalline (K) to mesophase (M) and the mesophase (M) to isotropic (I) phase transitions. Importantly, the alkoxy substituted compound synthesized showed an M–I transition because of greater stability, whereas the reported alkyl-thiol decomposes after the mesophase.
    Relation: Tetrahedron Letters 44(7), pp.1477-1480
    DOI: 10.1016/S0040-4039(02)02862-9
    Appears in Collections:[化學學系暨研究所] 期刊論文

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