A Fluorescent Chemosensor for Al3+ Based on C=O Isomerization Derivated from Curcumin

作者：Li, Zhengyi^*; Yan, Jinbei; Yin, Yue; Zhang, Zhihui; Wang, Zhiming; Xu, Defeng; Sun, Xiaoqiang^*

来源：Chinese Journal of Chemistry, 2016, 34(7): 657-661.

DOI：10.1002/cjoc.201600110

• aluminum recognition
• fluorescent sensor
• di-O-methyl curcumin
• keto-enol isomerization

A simple and nontoxic fluorescent chemosensor of di-O-methyl curcumin has been prepared from curcumin. The sensor exhibited selective and sensitive fluorescent responses toward Al3+ over a wide range of metal ions, such as Mn2+, Ce3+, Pt2+, Sn4+, Hg+, Sb3+, K+, Ca2+, Mg2+, Ba2+, Cu2+, Ni2+, Na+, NH4+, Ag+, Pb2+, Zn2+, Fe2+, Fe3+, Hg2+ and Cr3+ in ethanol/water. The free ligand showed quite weak fluorescence emission due to the isomerization of C=O double bond in the excited state, however, after addition of Al3+, fluorescence emission results in a prominent fluorescence enhancement.

• 出版日期2016-7
• 单位常州大学