‘On–off–on’ fluorescent indicators of pH windows based on three separated components
2002
Pallavicini, Piersandro | Amendola, V. (Valeria) | Massera, Chiara | Mundum, Etienne | Taglietti, Angelo
‘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.
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