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Co-Ligand Involvement in Ground and Excited States of Electron-Rich (Polypyridyl)Pt" Complexes
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SYSNO ASEP 0181640 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Co-Ligand Involvement in Ground and Excited States of Electron-Rich (Polypyridyl)Pt" Complexes Author(s) Klein, A. (DE)
Slageren van, J. (NL)
Záliš, Stanislav (UFCH-W) RID, ORCIDSource Title European Journal of Inorganic Chemistry. - : Wiley - ISSN 1434-1948
- (2003), s. 1917-1928Number of pages 12 s. Language eng - English Country DE - Germany Keywords Emission ; Platinum ; N ligands Subject RIV CF - Physical ; Theoretical Chemistry R&D Projects OC D14.20 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) OC D15.10 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z4040901 - UFCH-W Annotation The electronic absorption and luminescence properties of electron-rich organometallic platinum(II) complexes with aromatic .alpha.-diimine ligands [(.alpha.-diimine)PtR2] (R = alkyl, alkynyl, Ph or Mes, Mes = 2,4,6-trimethylphenyl) were examined. The crystal and molecular structures of [(bpy)PtMe2], [(tap)PtPh2] and [(tmphen)PtMes2] were determined from single-crystal XRD and discussed in view of intermolecular interactions that influence the emission behaviour. The combination of theoretical calculations (DFT) and spectroscopic techniques (absorption and emission) revealed the character of electronic transitions and excited states. In particular they showed that the co-ligand involvement in the frontier orbitals is small for R = Me, but large in case of R = alkynyl, Ph or Mes. Depending on the chelate ligand and its substitution pattern, the emission efficiencies of the complexes cover a wide range from strong emission in fluid solution at ambient temperature. Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2004
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