期刊
JOURNAL OF ORGANOMETALLIC CHEMISTRY
卷 763, 期 -, 页码 1-5出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jorganchem.2014.04.002
关键词
Pt organometallic complexes; Luminescence; Nonlinear properties
资金
- Saint-Petersburg State University Research grant [0.37.169.2014]
- RFBR [13-04-40342]
- Ministry of Education and Science of the Russian Federation
- Center for Magnetic Resonance
- Center for X-ray Diffraction Studies
- Center for Chemical Analysis and Materials Research of Saint Petersburg State University
A series of platinum(II) complexes (diimine) Pt(C CR) 2, where diimine is 2,2'-bipyridine (bpy) or 4,4'-bis(tert-butyl)-2,2'-bipyridine (dtbpy) and alkynyl ligand is biphenylacetylide or terphenylacetylide, were synthesized and their photophysical and non-linear optical properties were investigated. All compounds (1-3) were characterized using NMR spectroscopy, ESI mass-spectrometry and elemental analysis. X-Ray crystal structure of the complex containing 4,4'-bis(tert-butyl)-2,2'-bipyridine and terphenylacetylide ligands is reported. The electronic absorption and emission spectra of the complexes have been studied. Room temperature phosphorescence was observed for the complexes in solution with the luminescence quantum yield in the 7.5-11% range and excited state lifetimes in microsecond time domain. All complexes under study exhibit two-photon luminescence and their double quantum absorption cross-section was found to be in the 9-22 GM range. (C) 2014 Elsevier B.V. All rights reserved.
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