2D01 有機金属錯体のディスコティック液晶 (51) : オクタキス(3、4-ジアルコキシフェニル)テトラピラジノポルフィラジナート金属(II)錯体とその閉環金属錯体の合成と液晶相構造

概要

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Liquid crystals of phthalocyanines and their analogues have been demonstrated to be particularly attractive materials due to their extended two-dimensional π-conjugated electron system and their ali9nment in one-dimensional columnar stacks. We report here the synthesis and mesophase structures of octakis(3,4-dialkoxyphenyl)-tetrapyrazinoporphyrazinato metal(II) complexes, 1, and their corresponding ring-closed complexes, 2, with a widely extended core peripherally bearing sixteen n-alkoxy chains. All of them exhibit columnar mesophases. Interestingly, the mesophase structures of Complexes, 1, are strongly related to the structures of the aggregates in solvents. Complexes, 1, have a very rare structure of "slipped-roof-top-shaped dimer" in both the n-hexane solution and the D_<hd> columnar mesophase, whereas Complexes, 2, do not have such a unique structure.
日本液晶学会の論文
1995-09-10