Luminescent Transition Metal Complexes as Sensors: Structural Effects on pH Response
- 25 August 2005
- journal article
- Published by American Chemical Society (ACS) in Inorganic Chemistry
- Vol. 44 (19), 6662-6669
- https://doi.org/10.1021/ic050044e
Abstract
A series of luminescent transition metal complexes using the pH-sensitive ligand 5-carboxy-1,10-phenanthroline has been synthesized and characterized. The complexes, based on Ru(II) and Re(I), show monotonic changes in both luminescent intensity and lifetime with pH values over the range 2 < pH < 9. The impact of various structural features on both the range of pH sensitivity and dynamic response was studied using both intensity and lifetime measurements. It was possible to predictably tune the pH sensitivity range over about 1.5 pKa units. While significant variation in the dynamic response range was observed, the correlation with structural features needs further study.This publication has 22 references indexed in Scilit:
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