A novel coumarin based molecular switch for dual sensing of Zn(II) and Cu(II)

作者：Sarkar Deblina; Pramanik Ajoy Kumar; Mondal Tapan Kumar^*

来源：RSC Advances, 2015, 5(10): 7647-7653.

DOI：10.1039/c4ra12920b

An efficient coumarin based molecular switch for the dual sensing of two environmentally as well as biologically important cations Zn2+ and Cu2+ has been synthesized. The receptor H2L shows about 6 fold enhancement in fluorescence intensity upon the addition of Zn2+ and also exhibits quenching of emission intensity upon the addition of Cu2+ without interference of other metal ions present in solution. In the case of other metal ions no significant change in the emission intensity is observed. H2L presents a tunable system comprising of two INHIBIT logic gates with Zn2+ and Cu2+ or Zn2+ and EDTA as chemical inputs by monitoring the emission mode. An IMPLICATION logic gate is obtained with Cu2+ and EDTA as chemical inputs and emission as the output mode.

• 出版日期2015