Phase transitions of long chain esters of meso-tetrakis(para-carboxyphenyl)porphyrin

René Ramasseul Laboratoire de Chimie de Coordination (URA CNRS 1194), Service d'Etudes des Systèmes et Architectures Moléculaires, Département de Recherche Fondamentale sur la Matière Condensée, C.E.N.G., 85 X, 38041, Grenoble, Cedex, France

Pascale Maldivi Laboratoire de Chimie de Coordination (URA CNRS 1194), Service d'Etudes des Systèmes et Architectures Moléculaires, Département de Recherche Fondamentale sur la Matière Condensée, C.E.N.G., 85 X, 38041, Grenoble, Cedex, France

Jean-Claude Marchon Laboratoire de Chimie de Coordination (URA CNRS 1194), Service d'Etudes des Systèmes et Architectures Moléculaires, Département de Recherche Fondamentale sur la Matière Condensée, C.E.N.G., 85 X, 38041, Grenoble, Cedex, France

Mark Taylor Groupe des Matériaux Organiques, ICS, 6 rue Boussingault, 67083, Strasbourg, Cedex, France

Daniel Guillon Groupe des Matériaux Organiques, ICS, 6 rue Boussingault, 67083, Strasbourg, Cedex, France

Abstract

Several long chain esters of meso-tetrakis(para-carboxyphenyl)porphyrin, and two of their metal complexes (Cu, Zn) have been prepared and characterized. Each of them exhibits at least one thermotropic phase transition below the clearing point to the isotropic liquid, but no definitive evidence of liquid crystallinity has been found by differential scanning calorimetry, optical microscopy, or X-ray diffraction.

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Phase transitions of long chain esters of meso-tetrakis(para-carboxyphenyl)porphyrin

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Phase transitions of long chain esters of meso-tetrakis(para-carboxyphenyl)porphyrin

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