Data from: Colorimetric and fluorescent probes for real-time naked eye sensing of copper ion in solution and on paper substrate

Dugang Chen, Pengyu Chen, Luyi Zong, Yimin Sun, Guangchao Liu, Xianglin Yu & Jingui Qin
In this paper, BT ((E)-2-(4-(4-(bis(pyridin-2-ylmethyl)amino)styryl)-3-cyano-5,5-dimethylfuran-2(5H)-ylidene)malononitrile) with strong donor-π-acceptor structure was synthesized, which showed both colorimetric and fluorescent sensing ability to Cu2+ with high selectivity and sensitivity. The job plot and mass spectra measurement revealed a 1 : 1 coordination mode between Cu2+ and probe BT in ethanol/HEPES buffer (pH 7.2, v/v, 1/4) solution, and the binding constant was calculated to be 3.6×104 M–1. The color of BT solution (10 μM) immediately turned from purple red...
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