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Title: | Mesomorphism and Photophysics of Some Metallomesogens Based on Hexasubstituted 2,2′:6′, 2′′-Terpyridines |
Authors: | Kumar, N. S. S. Shafikov, M. Z. Whitwood, A. C. Donnio, B. Karadakov, P. B. Kozhevnikov, V. N. Bruce, D. W. |
Issue Date: | 2016 |
Publisher: | Wiley-VCH Verlag |
Citation: | Mesomorphism and Photophysics of Some Metallomesogens Based on Hexasubstituted 2,2′:6′, 2′′-Terpyridines / N. S. S. Kumar, M. Z. Shafikov, A. C. Whitwood, et al. — DOI 10.1002/chem.201505072 // Chemistry - A European Journal. — 2016. — Vol. 22. — Iss. 24. — P. 8215-8233. |
Abstract: | The luminescent and mesomorphic properties of a series of metal complexes based on hexacatenar 2,2′:6′,2′′-terpyridines are investigated using experimental methods and density functional theory (DFT). Two types of ligand are examined, namely 5,5′′-di(3,4,5-trialkoxyphenyl)terpyridine with or without a fused cyclopentene ring on each pyridine and their complexes were prepared with the following transition metals: ZnII, CoIII, RhIII, IrIII, EuIIIand DyIII. The exact geometry of some of these complexes was determined by single X-ray diffraction. All complexes with long alkyl chains were found to be liquid crystalline, which property was induced on complexation. The liquid-crystalline behaviour of the complexes was studied by polarising optical microscopy and small-angle X-ray diffraction. Some of the transition metal complexes (for example, those with ZnIIand IrIII) are luminescent in solution, the solid state and the mesophase; their photophysical properties were studied both experimentally and using DFT methods (M06-2X and B3LYP). Bright ideas: The luminescent and mesomorphic properties of a series of metal complexes based on hexacatenar 2,2′:6′,2′′-terpyridines (see figure) are investigated using experimental methods and density functional theory. The ligands in this study show a remarkable ability to promote liquid crystal behaviour when complexed to a wide range of metals where the liquid crystallinity extends over a very wide temperature range. © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. |
Keywords: | EMISSIVE MATERIALS LIQUID CRYSTALS METALLOMESOGENS PHOTOPHYSICS TERPYRIDINE CRYSTALLINITY LIGANDS LIQUID CRYSTALS LUMINESCENCE METAL COMPLEXES NANOCRYSTALLINE MATERIALS PHOTOPHYSICS TRANSITION METAL COMPOUNDS TRANSITION METALS X RAY DIFFRACTION EMISSIVE MATERIALS EXPERIMENTAL METHODS LIQUID CRYSTALLINITY METALLOMESOGENS PHOTOPHYSICAL PROPERTIES SMALL ANGLE X-RAY DIFFRACTIONS TERPYRIDINES WIDE TEMPERATURE RANGES DENSITY FUNCTIONAL THEORY |
URI: | http://elar.urfu.ru/handle/10995/102192 |
Access: | info:eu-repo/semantics/openAccess |
SCOPUS ID: | 84992308872 |
WOS ID: | 000380269400026 |
PURE ID: | f083961a-5170-407c-afb6-beb6def40d16 1030566 |
ISSN: | 9476539 |
DOI: | 10.1002/chem.201505072 |
Appears in Collections: | Научные публикации ученых УрФУ, проиндексированные в SCOPUS и WoS CC |
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