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New BODIPY Derivatives as OFF−ON Fluorescent Chemosensor and Fluorescent Chemodosimeter for Cu2+:  Cooperative Selectivity Enhancement toward Cu2+

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journal contribution
posted on 31.03.2006, 00:00 by Xin Qi, Eun Jin Jun, Li Xu, Sung-Jin Kim, Jay Sung Joong Hong, Yeo Joon Yoon, Juyoung Yoon
New 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene (BODIPY) derivatives (1 and 2) were synthesized as an “off−on” fluorescent chemosensor and fluorescent chemodosimeter for Cu2+ and Pb2+. Compound 1 displayed selective and large chelation enhanced fluorescence effects with Pb2+ and Cu2+ among the metal ions examined. On the other hand, compound 2, a fluorescent chemodosimeter, effectively recognized Cu2+ via a selective hydrolysis of the acetyl group.