Mesomorphic phase transitions of tetraphenylporphyrins with four long aliphatic chains |
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| Authors: | Y Shimizu M Miya A Nagata K Ohta I Yamamoto S Kusabayashi |
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| Institution: | 1. Organic Materials Department , Government Industrial Research Institute Osaka (GIRIO) , Midorigaoka, Ikeda , Osaka , 563 , Japan;2. Department of Functional Polymer Science, Faculty of Textile Science and Technology , Shinshu University , Ueda , Nagano , 386 , Japan;3. Graduate School of Chemical Process Engineering, Faculty of Engineering , Osaka University , Suita , Osaka , 565 , Japan |
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| Abstract: | Abstract Studies of 5,10,15,20-tetrakis(4-n-alkylphenyl)porphyrins revealed that the homologues with longer alkyl chains than hexyl were mesomorphic, in contrast to the non-mesomorphic alkoxy derivatives. Metal complexes (Co, Ni, Cu, Zn, and Pd) of the dodecyl derivative were also shown to exhibit mesophases. These mesophases were assigned as discotic lamellar (DL) phases by X-ray diffraction studies. |
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