Abstract
A simple amino-terpyridine sensor exhibits highly selective detection of Zn2+ and Cd2+ in solution and solid state based on the intramolecular charge transfer (ICT) effect. The detection limits were determined to be 0.184 μM for Zn 2+ and 0.176 μM for Cd 2+. Job’s plot experiments suggest a 1:1 binding mode between the sensor and metal ions like Zn 2+ and Cd 2+. The resulting complexes were found to be emissive in solution and solid state.
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Author thanks the Fundamental Research Funds for the Central Universities (No. 5001-852018) and General project of scientific research of the Education Department of Liaoning Province (No. L2015107).
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Detection limits of Zn 2+ and Cd 2+ (figures S1, S2), B-H plots of sensor 1 with Zn 2+ and Cd 2+ (figures S3, S4), Job’s plots for Zn 2+ and Cd 2+ (figures S5, S6), UV-Vis titration of Cd 2+ (figure S7), 1H NMR spectra of complexes 4 and 5 (figures S8, S9) are given in the supporting information, available at www.ias.ac.in/chemsci.
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CHAO, D. Highly selective detection of Zn2+ and Cd2+ with a simple amino-terpyridine compound in solution and solid state. J Chem Sci 128, 133–139 (2016). https://doi.org/10.1007/s12039-015-1011-y
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DOI: https://doi.org/10.1007/s12039-015-1011-y