Journal
DYES AND PIGMENTS
Volume 109, Issue -, Pages 127-134Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.dyepig.2014.05.014
Keywords
Copper; Cyanide; Colorimetric; Sequential recognition; Test strips; Reversibility
Funding
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education, Science and Technology [2012001725]
- National Research Foundation of Korea [2012R1A1B3001725] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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A new chemo-sensor (E)-4-((2-((2-hydroxynaphthalen-1-yl)methylene)amino)phenyl-amino)-3-nitro-2H-chromen-2-one (1) based on the combination of 2-hydroxy-1-naphthaldehyde and precursor 4-((2-aminophenyl)amino)-3-nitro-2H-chromen-2-one was designed and synthesized as a selective calorimetric sensor for Cu2+. 1 exhibited a color change from yellow to orange in the presence of Cu2+ in aqueous solution and the resulting 1-Cu2+ complex sensed cyanide through naked eye. Moreover, 1 could be used as a practical, visible colorimetric test strip for Cu2+ in aqueous environment. These results demonstrate a new type of the sequential recognition of Cu2+ and CN- by a convenient, easy and colorimetric method. (C) 2014 Elsevier Ltd. All rights reserved.
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