‘On–off–on’ fluorescent indicators of pH windows based on three separated components

24 September 2002

journal article
research article
Published by Royal Society of Chemistry (RSC) in Chemical Communications

No. 20,p. 2452-2453
https://doi.org/10.1039/b205951g

Abstract

‘On–off–on’ fluorescent indicators for pH windows are obtained with ternary systems in which the three separated components are Cu²⁺, a tetraaza ligand and the fluorophore Coumarin 343: protonation of Coumarin 343, its coordination to Cu²⁺ and its displacement from Cu²⁺ by OH⁻ give an inverse bell-shaped variation of emission with pH.

Keywords

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