期刊
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
卷 -, 期 23, 页码 3932-3939出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejic.201500021
关键词
Ruthenium; N ligands; Ligand effects; Luminescence
资金
- Elitenetzwerk Bayern
- Fonds der Chemischen Industrie, Landesgraduiertenstipendium
- Carl Zeiss Stiftung
- Graduiertenkolleg - Research Training Group [GRK 1626]
- Friedrich-Alexander-Universitat Erlangen-Nuremberg (GSMS)
- German Federal Environmental Foundation (Deutsche Bundesstiftung Umwelt)
- COST Action [CM1202]
A series of ruthenium polypyridyl complexes [Ru(tbbpy)(3)][PF6](2) (0, tbbpy = 4,4-di-tert-butyl-2,2-bipyridine), [Ru(tbbpy)(2)(bbip)][PF6](3) {1, (bbip)Br = 1,3-(bisbenzyl)-1H-imidazo[4,5-f][1,10]phenanthrolinium bromide}, [Ru(tbbpy)(bbip)(2)][PF6](4) (2), and [Ru(bbip)(3)][PF6](5) (3) were synthesized. The new complexes 2 and 3 were fully characterized, and their X-ray crystal structures, absorption and emission spectra, quantum yields of emission, and cyclic voltammograms were determined. Within this series, a trend towards increased lifetime and quantum yields of emission can be observed, especially in the presence of oxygen. The location of the first excited state on the imidazophenanthrolinium ligands has been elucidated by resonance Raman spectroscopy of 1 and 3, which revealed that the energy of the * orbitals of the bbip ligands is lower than that of the * orbitals of the tbbpy ligand.
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