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Preparation of a DNA-Tb-MOF conjugate as a time-resolved probe for the detection of SO2 derivatives through an off–on effect

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Abstract

Herein we synthesize a DNA-sensitized Tb-MOF conjugate (DNA-Tb-MOF) as a time-resolved luminescent probe to sensitively and selectively assay SO2 and their derivatives (i.e., HSO3) through a photoluminescence off–on effect. The charge and energy transfer mechanism enables the demonstration of the effect of the photoluminescence turn-on which results from the reaction between the amino group of the DNA-Tb-MOF conjugate and SO2/HSO3. The results demonstrate that the DNA-Tb-MOF conjugate probe can sense SO2 and their derivatives (i.e., HSO3) with a detection limit of 0.02 ppm. Moreover, the photoluminescence off–on effect can be observed even by the naked eye.

Graphical abstract: Preparation of a DNA-Tb-MOF conjugate as a time-resolved probe for the detection of SO2 derivatives through an off–on effect

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Article information


Submitted
29 Apr 2020
Accepted
09 Jun 2020
First published
11 Jun 2020

Analyst, 2020, Advance Article
Article type
Communication

Preparation of a DNA-Tb-MOF conjugate as a time-resolved probe for the detection of SO2 derivatives through an off–on effect

Y. Xie, H. Ma, F. L. He, J. Chen, Y. Ji, S. Han and D. Zhu, Analyst, 2020, Advance Article , DOI: 10.1039/D0AN00861C

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