Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 194, Issue -, Pages 343-352Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2013.12.114
Keywords
Multiple analytes; Chromogenic; Fluorescent; Schiff base
Funding
- Ministry of Education, Science and Technology [2012001725, 2012008875, 2013K000334]
- National Research Foundation of Korea [2010-50244, 2012R1A2A2A02008875, 2012R1A1B3001725] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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A simple and easily synthesized fluorescent and colorimetric chemosensor 1, based on juloidine-imidazole moieties as a binding and signaling unit, has been synthesized in a one-step procedure. Receptor 1 showed immediate responses toward Zn2+ and Al3+ ions through selective fluorescence enhancement in buffer-acetonitrile and dimethylformamide (DMF) solution, respectively. Moreover, receptor 1 sensed the two states (Fe(II) and Fe(III)) of iron by naked eye with a different color. Upon the addition of Fe2+ and Fe3+ into each solution of 1, the color of the solutions instantly changed from colorless to orange for Fe2+ and to purple for Fe3+. Thus, this sensor provides a novel approach for selectively recognizing the biologically important three elements in the human body simultaneously, for Zn2+ and Al3+ by emission spectra and Fe2+ and Fe3+ by the naked eye. (C) 2014 Elsevier B.V. All rights reserved.
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