期刊
TETRAHEDRON LETTERS
卷 54, 期 32, 页码 4232-4236出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2013.05.134
关键词
Cation sensors; 8-Hydroxyquinoline; Triethylene glycol; Al3+ detection
资金
- Council of Scientific and Industrial Research (CSIR), New Delhi [NWP 0035]
- CSIR, New Delhi
A triethylene glycol modified quinoline ester (PQTEG) is synthesised, which acts as a colorimetric sensor for Al3+ ions with a detection limit of 8 x 10(-7) M in acetonitrile/water (95:5, v/v) solvent system. A visible, colour change from colourless to deep yellow was observed on binding of PQTEG with the metal ion. The unshared electron pairs of oxygen and nitrogen in triethylene glycol ester of quinoline provide a high binding affinity towards Al3+ and serves as the binding site. The metal binding was further confirmed from H-1 NMR studies and IR spectroscopic studies. (C) 2013 Elsevier Ltd. All rights reserved.
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