Journal
DYES AND PIGMENTS
Volume 116, Issue -, Pages 131-138Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.dyepig.2015.01.020
Keywords
Colorimetric chemosensor; Sequential detection; Copper; Cysteine; Theoretical calculations
Funding
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education, Science and Technology [2012001725, 2012008875]
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A simple and easy-to-make colorimetric chemosensor 1 for the sequential detection of Cu2+ and cysteine was developed by combination of hydroxynaphthalene-2-carbaldehyde and diaminomaleonitrile. This sensor 1 exhibited an obvious color change from pale yellow to orange in the presence of Cu2+ in aqueous solution. Also, the resulting 1-Cu2+ complex sensed cysteine through naked-eye, showing recovery from 1-Cu2+ to 1, over other sulfur-containing amino acid and peptide. Moreover, the sensing ability of 1 for Cu2+ was supported by theoretical calculations. (C) 2015 Elsevier Ltd. All rights reserved.
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