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We describe the synthesis and fluorescence spectral characterization of a pH-sensitive metal–ligand complex, [Ru(deabpy)(bpy)2]2+, where deabpy is 4,4′-diethylaminomethyl-2,2′-bipyridine. This metal–ligand complex (MLC) was found to display pH-dependent intensities, emission spectra, and decay times, with the changes centered near the physiological useful pH value of 7.5. The apparent pKavalues were...
A lifetime-based optical NH 3 sensor based on the principle of fluorescence resonance energy transfer was developed. The sensor consisted of sulforhodamine 101 as the donor, bromocresol green as the acceptor, ethyl cellulose as the polymer support, and tributyl phosphate as the plasticizer. When the concentration of NH 3 changed, it caused a change in the decay time of the SR101, which...
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