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

N. S Saleesh Kumar, Marsel Z. Shafikov, Adrian C. Whitwood, Bertrand Donnio, Peter B. Karadakov, Valery N. Kozhevnikov, Duncan W. Bruce*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


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).

Original languageEnglish
Pages (from-to)8215-8233
Number of pages19
JournalChemistry : A European Journal
Issue number24
Early online date3 May 2016
Publication statusPublished - 6 Jun 2016

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© 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.


  • emissive materials
  • liquid crystals
  • metallomesogens
  • photophysics
  • terpyridine

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