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Luminescence Decay Time-Based Determination of Potassium Ions

Krause, Christian ; Werner, Tobias ; Huber, Christian ; Klimant, Ingo ; Wolfbeis, Otto S.
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Date of publication of this fulltext: 18 Apr 2011 13:11


Abstract

A luminescence decay time-based potassium ion sensor is presented which applies the ion-exchange principle. The bulk membrane consists of valinomycin, plasticized PVC, and the ruthenium(II) tris-4,4‘-diphenyl-2,2‘-bipyridyl bromothymol blue ion pair [Ru(dibipy)3](BTB)2 as a proton donor. The efficacy of radiationless energy transfer from the donor (the ruthenium complex) to the acceptor (BTB) is ...

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