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A new rhodamine-based chemosensor for Cu2+ and the study of its behaviour in living cells

Liang Huang, Xiao Wang, Guoqiang Xie, Pinxian Xi, Zhengpeng Li, Min Xu, Yongjie Wu, Decheng Bai, Zhengzhi Zeng
Dalton Transactions: An International Journal of Inorganic Chemistry 2010 September 14, 39 (34): 7894-6
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A new rhodamine-based chemosensor (L1) was synthesized, and it exhibits high sensitivity and selectivity for the copper cation over other commonly coexistent metal ions in aqueous solution. Upon the addition of Cu(2+), the spirolactam ring of L1 was opened and a 1 : 1 metal-ligand complex was formed. Fluorescent imaging of Cu(2+) in living cells is also successfully demonstrated.

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