Synthesis and pH-sensing of simple but effective ruthenium(II) polypyridine complexes: potential lysosome probes
Abstract
The pH optical sensors work on the principle of pH-related changes in the absorption or emission of a probe. They have generated much interest during the past decades due to their wide applications in fields such as analytical chemistry, biochemistry, clinical medical diagnosis, and environmental monitoring. Two Ruthenium(II) polypyridine complexes, [Ru(bpy)2(hipp)]2+ (Ru1) and [Ru(bpy)2(dcipp)]2+ (Ru2), were chosen as pH probes. Here, bpy denotes 2,2-bipyridine, hipp denotes 2-(1H-imidazo [4,5-f][1,10]phenanthrolin-2-yl)phenol, and dcipp denotes 2,4-dichloro-6-(1H-imidazo[4,5-f] [1,10]phenthrolin-2-yl)phenol, respectively. The pH effects on the absorption and emission spectra of Ru1 and Ru2 were investigated by pH titrations. Ru1 and Ru2 were found to be pH-sensitive and revealed different ionization constants, suggesting their potential use as optical pH sensors and applications in environmental monitoring.
About the Authors
Kexin LiuChina
Changchun
Miao Tian
China
Changchun
Xingfang Li
China
Changchun
Xiu Sun
China
Changchun
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Review
For citations:
Liu K., Tian M., Li X., Sun X. Synthesis and pH-sensing of simple but effective ruthenium(II) polypyridine complexes: potential lysosome probes. Zhurnal Prikladnoii Spektroskopii. 2024;91(6):918.