Journal
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
Volume 183, Issue -, Pages 356-361Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.saa.2017.04.043
Keywords
Aldoxime; Triphenylamine-BODIPY; Hypochlorite detection; C=N isomerization; Naked-eye visible
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Funding
- Fundamental Research Funds for the National Natural Science Foundation of China [61178057]
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An aldoxime containing fluorescent probe based on vinylpydine-appended triphenylamine-BODIPY has been designed and used for hypochlorite detection. OX-PPA-BODIPY was developed by introducing an aldoxime group into the 2-position of BODIPY, which can be used for the detection of hypochlorite with a sharp color change from pink to green. The attachment of 4-vinylpyridine moiety to triphenylamine-BODIPY constructs a fluorogen with desirable conjugated system. The probe, which displays extremely weak fluorescence owing to the C=N isomerization mechanism at 2-position of BODIPY, responds to HClO/ClO- through a dramatic enhancement of its fluorescence intensity. This new probe, a naked-eye visible and fluorometric chemodosimeter, exhibits high selectivity and sensitivity toward hypochlorite over other reactive oxygen species (ROS) and anions. The detection is accompanied by a 20-fold increase in fluorescent intensity (Phi(F) from 0.02 to 0.43). The detection limit of the probe for hypochlorite is 7.37 x 10(-7) M. Moreover, OX-PPA-BODIPY can be used to detect hypochlorite in real water samples. (C) 2017 Elsevier B.V. All rights reserved.
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