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A simple pyrene compound (1) containing thiophene is synthesized and used as ratiometric fluorescent chemosensor to recognize Cu2+. The ratiometric signal change of the chemosensor is on the basis of monomer–excimer conversion of 1 induced by Cu2+. As far as we know, it is the first ratiometric chemosensor based on pyrene compound that is developed for Cu2+. The analytical performance characteristics...
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