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Detection of nanomolar concentrations of copper(II) with a Tb-quinoline-2-one probe using luminescence quenching or luminescence decay time

Turel, Matejka ; Duerkop, Axel ; Yegorova, Alla ; Scripinets, Yulia ; Lobnik, Aleksandra ; Samec, Niko



Abstract

We present a time-resolved (gated) luminescence-based method for determination of Cu2+ ions ill microtiterplate format in the nanomolar concentration range using the novel long-lived terbium-[1-methyl-4-hydroxy-3-(N-2-ethyl-5-aminothiadiazolyl-)-carbamoyl-quinoline-2-one] (TbL) complex. The probe works best in Tb:L = 1:2 stoichiometry at neutral pH. The dynamic range is from 10 to 300 nmol L-1 of ...

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