Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 245, Issue -, Pages 428-434Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2017.01.174
Keywords
Ratiometric responses; Diaminomalenonitrile; Push-pull; Anion sensor; Turn on; Intramolecular charge transfer
Funding
- Department of Science and Technology (DST), Extramural Research Project Grant [EMR/2015/000969]
- DST-SERB [SR/F/1584/2012-13]
- Council of Scientific and Industrial Research, New Delhi, India [01(2540)/11/EMR-II]
- University Grants Commission, New Delhi, India [UGC 41-215/2012 (SR)]
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Two new diaminomalenonitrile (DMN) based Schiff bases have been synthesized and explored as a highly efficient receptor for fluoride and cyanide anions. Detection of anions induced by deprotonation of-NH2 followed by transfer of proton to the electron deficient nitrogen atom of -CN which induce the strong charge transfer (CT). Anion selectivity was controlled by the fluorophore attached to the DMN, the fluorophore can tune the electron push-pull property. This phenomenon was confirmed by H-1 NMR and DFT calculations. (C) 2017 Elsevier B.V. All rights reserved.
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