科研之友
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摘要
A new rhodamine-based reversible chemosensor () was synthesized, which exhibits high sensitivity and selectivity for Cu2+ but no significant response toward other competitive metal ions in aqueous solution. Upon the addition of Cu2+, the spirolactam ring of was opened and the solution color changed from colorless to red. Strangely, an unexpected fluorescence quenching was observed, which is contrary to the fluorescence turn-on of the most rhodamine-based chemosensors. The likely novel sensing mechanism has been proposed.
- 出版日期2012-5
- 单位江南大学
