Mesomorphism and Photophysics of Some Metallomesogens Based on Hexasubstituted 2,2':6', 2''-Terpyridines: 6', 2''-Terpyridines

TY - JOUR

T1 - Mesomorphism and Photophysics of Some Metallomesogens Based on Hexasubstituted 2,2':6', 2''-Terpyridines

T2 - 6', 2''-Terpyridines

AU - Kumar, N. S Saleesh

AU - Shafikov, Marsel Z.

AU - Whitwood, Adrian C.

AU - Donnio, Bertrand

AU - Karadakov, Peter B.

AU - Kozhevnikov, Valery N.

AU - Bruce, Duncan W.

N1 - © 2016, Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details.

PY - 2016/6/6

Y1 - 2016/6/6

N2 - 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, EuIII and 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 ZnII and 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).

AB - 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, EuIII and 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 ZnII and 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).

KW - emissive materials

KW - liquid crystals

KW - metallomesogens

KW - photophysics

KW - terpyridine

UR - http://www.scopus.com/inward/record.url?scp=84992308872&partnerID=8YFLogxK

U2 - 10.1002/chem.201505072

DO - 10.1002/chem.201505072

M3 - Article

AN - SCOPUS:84992308872

SN - 0947-6539

VL - 22

SP - 8215

EP - 8233

JO - Chemistry : A European Journal

JF - Chemistry : A European Journal

IS - 24

ER -