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Issue 39, 2015
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Green-blue light-emitting platinum(II) complexes of cyclometallated 4,6-difluoro-1,3-dipyridylbenzenes showing mesophase organisation

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Abstract

Blue-green light-emitting phosphorescent PtII complexes of 1,3-bis(2-pyridyl)benzene are reported that incorporate hexadecyl-containing fragments in the 5-position of the pyridine rings. Along with the more classical half disc-shaped hexacatenar molecule with six pendant alkoxy chains, which shows an R[3 with combining macron]m mesophase, the simpler complex functionalised by just two alkoxy chains, one at each pyridyl 5-position, was also found to be mesomorphic. The luminescence of pure films obtained from these complexes is orange-red, dominated by the excimer-like emission, and is independent of the thermal history of the film. The mesophases of the complexes are three-dimensional and columnar in nature – all are based on a two-dimensional hexagonal arrangement extended into the third dimension.

Graphical abstract: Green-blue light-emitting platinum(ii) complexes of cyclometallated 4,6-difluoro-1,3-dipyridylbenzenes showing mesophase organisation

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Publication details

The article was received on 09 Jul 2015, accepted on 08 Sep 2015 and first published on 16 Sep 2015


Article type: Paper
DOI: 10.1039/C5TC02077H
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J. Mater. Chem. C, 2015,3, 10177-10187
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    Green-blue light-emitting platinum(II) complexes of cyclometallated 4,6-difluoro-1,3-dipyridylbenzenes showing mesophase organisation

    V. N. Kozhevnikov, B. Donnio, B. Heinrich, J. A. G. Williams and D. W. Bruce, J. Mater. Chem. C, 2015, 3, 10177
    DOI: 10.1039/C5TC02077H

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