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A novel fluorescence phenomenon caused by amine induced ion-exchange between Cd2+ and Fe3+ ions
Lei Jia1,2, Zhe Xue1,2, Rong-Rong Zhu1,2
1Key Laboratory of Medicinal Chemistry for Natural Resource Education Ministry, Yunnan University Kunming 650091 People's Republic of China lindu@ynu.edu.cn qhzhao@ynu.edu.cn.
Abstract:
A 3D metal-organic framework {[Cd(5-Brp)(dpa)]·0.5DMF·H2O} (1) was successfully synthesized and characterized, which markedly recognized iron ions under the induction of an amino group. With the concentration of Fe3+ increasing, the emission of 1 first declined, then enhanced with a red shift and was finally quenched, which was different from the reference compound [Cd(5-Brp)(bpp)(H2O)] (2). This result drew our attention to amine induced ion-exchange. This peculiar phenomenon inspired us to construct an effective ion detector.
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