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Photochemical Ion Receptor Based on a Structurally Distorted Ruthenium(II) Complex Having a Crown-Ether Moiety at the 3,3′-Positions on the 2,2′-Bipyridine Ligand
- Source :
- Analytical Sciences. 18:461-466
- Publication Year :
- 2002
- Publisher :
- Springer Science and Business Media LLC, 2002.
-
Abstract
- Ru(bpy)2(CE-bpy)2+ was prepared where bpy and CE-bpy were 2,2'-bipyridine and bpy having a crown-ether moiety at the 3,3'-positions, respectively. Although Ru(bpy)2(CE-bpy)2+ showed only very weak emission in acetonitrile, recognition of Na+, Li+, or K+ by the crown-ether moiety in CE-bpy resulted in increases in both the emission intensity and the lifetime of the complex, demonstrating that it acted as a photoreceptor. The results were discussed in terms of a steric hindrance between the 3,3'-substituents on CE-bpy and structural changes in both CE-bpy and the complex upon ion recognition, as studied by variable-temperature 1H-NMR and steady-state/dynamic emission spectroscopy of the complex.
Details
- ISSN :
- 13482246 and 09106340
- Volume :
- 18
- Database :
- OpenAIRE
- Journal :
- Analytical Sciences
- Accession number :
- edsair.doi.dedup.....7503f5b562c05df3ddfa5520a32d8161
- Full Text :
- https://doi.org/10.2116/analsci.18.461