Journal
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
Volume 118, Issue -, Pages 883-887Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.saa.2013.09.118
Keywords
Zinc ion sensor; Quinoline; Fluorescent chemosensor; Fluorescence enhancement
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Funding
- National Research Foundation of Korea (NRF)
- Ministry of Education, Science and Technology [2012001725, 2012008875]
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A quinoline-based simple receptor (bis(2-quinolinylmethyl)benzylamine = 1) as a Zn2+ selective fluorescent chemosensor showed a large fluorescent enhancement with a blue shift in the presence of Zn2+ which is attributed to a chelation enhanced fluorescence (CHEF) effect with inhibition of a photoinduced electron transfer (PET) process of 1. In particular, this receptor could clearly distinguish Zn2+ from Cd2+. The binding mode of 1 and Zn2+ was found to be a 1:1 and confirmed by Job plot, H-1 NMR titration and ESI-mass spectrometry analysis. (C) 2013 Elsevier B.V. All rights reserved.
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