Unusual mesomorphic behaviour of an ethynyl-substituted phthalocyanine |
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| Authors: | García-Frutos Eva M Bottari Giovanni Vázquez Purificación Barberá Joaquín Torres Tomás |
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| Institution: | Departamento de Química Orgánica (C-I), Facultad de Ciencias, Universidad Autónoma de Madrid, 28049 Madrid, Spain. |
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| Abstract: | An ethynyl-substituted nickel(II) phthalocyanine has been synthesised and its thermotropic properties studied; optical microscopy, differential scanning calorimetry (DSC) and X-ray diffraction (XRD) techniques revealed an unusual mesomorphic behaviour observed for the first time in phthalocyanine systems where each disk of the hexagonal columnar mesophase is formed by two ethynyl-substituted phthalocyanine units. |
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