Journal
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
Volume 214, Issue -, Pages 170-176Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.saa.2019.02.020
Keywords
Coumarin based hydrazone; Cu2+ detection; Colorimetric and Fluorimetric detection; DFT calculations; Fluorescence bioimaging
Categories
Funding
- SERB, New Delhi, India [YSS/2015/000037]
- UGC, New Delhi
- UGC FRP faculty award [F.4-5(94-FRP)/2014(BSR)]
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We have constructed a new coumarin based fluorescence probe BENZPYR with ICT character through condensation of N, N-diethylamino-3-acetyl coumarin with 2-hydrazinobenzothiazole. The absorbance and fluorescence spectral characteristics of BENZPYR revealed that the chemosensor can specifically detect for Cu2+ ions over other different metal ions and the lowest limit of detection was found in nano molar range. The turn off sensor of BENZPYR is related to chelation enhanced quenching (CHEQ) and intramolecular charge transfer (ICT) processes were serve as excellent fluorescent detection of Cu2+ ions in DMF medium. Fluorescence microscopy experiments revealed that probe BENZPYR may have application as a fluorophore to detect the Cu2+ in living cells. The simulated DFT analysis of electronic and structural properties and also UV-vis absorption spectra are in well accordance with the experimental UV-vis absorption spectra. (C) 2019 Elsevier B.V. All rights reserved.
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