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Issue 32, 2015
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A ratiometric fluorescent probe for rapid, sensitive and selective detection of sulfur dioxide with large Stokes shifts by single wavelength excitation

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Abstract

4-(Benzothiazol-2-yl)-3-hydroxybenzaldehyde, probe 1, has been developed as a ratiometric fluorescent probe for the sensitive and selective detection of sulfur dioxide with a fast response time (within seconds). This probe itself exhibited a yellow emission (λmaxem = 563 nm) with a 186 nm Stokes shift. Upon treatment with sulfite anions, this probe instantaneously displayed a blue emission (λmaxem = 467 nm) with a 133 nm Stokes shift. The large Stokes shifts and absorption spectral overlap of probe 1 both in the absence and in the presence of SO32−/HSO3 allow the fluorescence detection under single wavelength excitation. Importantly, this ratiometric probe was successfully demonstrated for the imaging of intracellular sulfite anions in living cells.

Graphical abstract: A ratiometric fluorescent probe for rapid, sensitive and selective detection of sulfur dioxide with large Stokes shifts by single wavelength excitation

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Publication details

The article was received on 16 Apr 2015, accepted on 01 Jul 2015 and first published on 02 Jul 2015


Article type: Paper
DOI: 10.1039/C5OB00765H
Org. Biomol. Chem., 2015,13, 8663-8668

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    A ratiometric fluorescent probe for rapid, sensitive and selective detection of sulfur dioxide with large Stokes shifts by single wavelength excitation

    X. Liu, Q. Yang, W. Chen, L. Mo, S. Chen, J. Kang and X. Song, Org. Biomol. Chem., 2015, 13, 8663
    DOI: 10.1039/C5OB00765H

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