Enhancement of Luminescence Lifetimes of Mononuclear Ruthenium(II)-Terpyridine Complexes by Manipulation of the -Donor Strength of L
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- 作者：Marco Duati ; Stefania Tasca ; Fiona C. Lynch ; Holger Bohlen ; Johannes G. Vos ; Stefano Stagni ; and Michael D. Ward
- 刊名：Inorganic Chemistry
- 出版年：2003
- 出版时间：December 15, 2003
- 年：2003
- 卷：42
- 期：25
- 页码：8377 - 8384
- 全文大小：137K
- 年卷期：v.42,no.25(December 15, 2003)
- ISSN：1520-510X
文摘
The synthesis and characterization of mixed ligand 2,2';6',2' '-terpyridine (tpy) ruthenium complexes with 2,6-bis([1,2,4]triazol-3-yl)pyridine, 2,6-bis(5-phenyl-[1,2,4]triazol-3-yl)pyridine, and 2,6-bis([1,2,3,4]tetrazol-5-yl)pyridine arereported. The species are characterized by HPLC, 1H NMR, UV/vis, and emission spectroscopy. The photophysicalproperties of the complexes are investigated as a function of temperature over the range 80-320 K. The emissionlifetime observed for the fully deprotonated compounds at room temperature is about 80 ns. This increase by 2orders of magnitude with respect to the parent "[Ru(tpy)2]2+" complex is rationalized by an increase in the energyof the metal based d
orbital, rather than by manipulation of the 
* orbitals on the ligands. The acid-base andelectrochemical properties of the compounds are reported also.
orbital, rather than by manipulation of the * orbitals on the ligands. The acid-base andelectrochemical properties of the compounds are reported also.