基于三个分离组分的pH窗口“开-关-开”荧光指示剂。
'On-off-on' fluorescent indicators of pH windows based on three separated components.
作者信息
Pallavicini Piersandro, Amendola Valeria, Massera Chiara, Mundum Etienne, Taglietti Angelo
机构信息
Dipartimento di Chimica Generale, Università di Pavia, via Taramelli 12, I-27100 Pavia, Italy.
出版信息
Chem Commun (Camb). 2002 Oct 21(20):2452-3. doi: 10.1039/b205951g.
DOI:10.1039/b205951g
PMID:12430486
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.
摘要
通过三元体系获得了用于特定pH范围的“开-关-开”荧光指示剂，该三元体系中三个分离的组分分别是Cu2+、一种四氮杂配体和荧光团香豆素343：香豆素343的质子化、其与Cu2+的配位以及被OH-从Cu2+上取代，导致发射强度随pH呈倒钟形变化。
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