Archive for May 7, 2014

J. Organomet. Chem. 2014

A.A. Melekhova, D.V. Krupenya, V.V. Gurzhiy, A.S. Melnikov, P.Yu. Serdobintsev, S.I. Selivanov, S.P. Tunik

“Synthesis, characterization, luminescence and non-linear optical properties of diimine platinum(II) complexes with arylacetylene ligands”

J. Organomet. Chem., 2014, accepted

DOI: 10.1016/j.jorganchem.2014.04.002

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 (13) 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.

Excursion 05.05.2014

Today a group of students from the University of Leiden, The Netherlands, visited our Center. The guests got acquainted with the equipment and the principles of work of the Center.

April 2014

Total in April 1700 service applications were carried out.

All together measured:

  • 1631 1H spectra
  • 363 13C spectra
  • 193 DEPT spectra
  • 39 COSY spectra
  • 37 NOESY spectra
  • 96 31P spectra
  • 89 19F spectra

115 applications were carried out which jointly took 1370 hours of measurements.