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

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 e...

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Bibliographic Details
Published in:Analyst (London) 2020-07, Vol.145 (14), p.4772-4776
Main Authors: Xie, Yaochen, Ma, Haoxuan, Fang liang He, Chen, Jiaqi, Ji, Yanlai, Han, Shuying, Zhu, Dong
Format: Article
Language:English
Subjects:
Charge transfer
Conjugates
Deoxyribonucleic acid
Derivatives
DNA
Energy transfer
Photoluminescence
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Summary: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.
ISSN:0003-2654
1364-5528
DOI:10.1039/d0an00861c