Issue 18, 2011

Metallomesogens based on platinum(ii) complexes: synthesis, luminescence and polarized emission

Abstract

Two series of heteroleptic cyclometalated platinum(II) complexes [(CnOppy)Pt(acac) and (CnOFppy)Pt(acac)] have been prepared. Their liquid-crystal and optophysical properties were studied, in which CnOppy is 2-(4-alkoxyphenyl)-5-(alkoxymethyl)pyridine and CnOFppy is 2-(3-fluoro-4-alkoxyphenyl)-5-(alkoxymethyl)pyridine. Only the heteroleptic cyclometalated platinum(II) complexes (n = 12 and 16) exhibited enantiotropic mesophase transitions with smectic (Sm) structure. Intense polarized luminescence with a maximum peak at 532 nm and a polarization ratio as high as 10.5 were obtained in an aligned polyimide film under opto-excitation at room temperature. This research work provides a simple approach to realize high-efficiency polarized emission by heteroleptic cyclometalated platinum(II) complexes.

Graphical abstract: Metallomesogens based on platinum(ii) complexes: synthesis, luminescence and polarized emission

Supplementary files

Article information

Article type
Paper
Submitted
02 Nov 2010
Accepted
02 Mar 2011
First published
30 Mar 2011

Dalton Trans., 2011,40, 5046-5051

Metallomesogens based on platinum(II) complexes: synthesis, luminescence and polarized emission

Y. Wang, Y. Liu, J. Luo, H. Qi, X. Li, M. Nin, M. Liu, D. Shi, W. Zhu and Y. Cao, Dalton Trans., 2011, 40, 5046 DOI: 10.1039/C0DT01515F

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