作者: Iwhan Cho , Youngsoo Lim
DOI: 10.1080/00268948808078718
关键词:
摘要: Abstract New discogens based on the octasubstituted phthalocyanines (Pc) were synthesized: 2,3,9,10,16,17,23,24-octakis[dodecylthio-1-methyl]-phthalocyanine (1a), 2,3,9,10,16,17,23,24-octakis[4-(dodecylthio)-2-oxa-butyl]-phthalocyanine (1b), 2,3,9,10,16,17,23,24-octakis[dodecyloxy]-phthalocyanine (1c), phthalocyanine 2,3,9,10,16,17,23,24-octa-n-dodecanoate (1d), S-(+)-2,3,9,10,16,17,23,24-octakis[4-(dodecyloxy)-2-oxa-pentyl]-phthalocyanine (1e), as well their corresponding copper complexes (CuPc) 2a, 2b, 2c and 2e. They characterized by microanalysis, IR, 1H 13C NMR spectroscopies, mesomorphic behaviors examined with DSC optical microscopic methods. The products exhibited following textures transition temperature ranges: focal conic (1a, 95-267°; 108-304°), linear default (1b, 52-247°; 70-255°; 1c, 75-269°; 2c, 78-310°), fan-shaped (1d, 58-303°; 2e, 29-191°). Chiral discogenic PcH2 1e, however, showed a cholestericlike texture (23-151°C) in which ...