5-氨基-1,10-菲咯啉:可异构化杂环螯合荧光载体作为比例计量型锌离子荧光探针的一种原型

摘要

5-amino-1,10-phenanthroline (5-AP), as a tautomeric heterocyclic aromatic chelating fluorophore(THACF), can sense Zn2+ selectively by shifting emission from 495 to 564 nm upon Zn2+ addition in ethanol. The ratiometric fluorescent sensing behavior has been correlated to the tautomerization of 5-AP affected by solvents and metal chelation. The strategy using THACF as ratiometric fluorescent sensor for Zn2+ not only simplifies the synthetic procedure but also gives a promising alternative for Zn2+ ratiometric fluorescent sensor design.