Ratiometric luminescence detection of HO in food samples using a terbium coordination polymer sensitized with 3-carboxyphenylboronic acid.

Spectrochim Acta A Mol Biomol Spectrosc

School of Pharmaceutical Sciences, Gannan Medical University, Ganzhou 341000, China. Electronic address:

Published: May 2024

AI Article Synopsis

  • A ratiometric luminescent probe was developed using AMP as a bridging ligand and 3-CPBA as the sensitizer, enabling it to detect hydrogen peroxide (HO).
  • The probe's luminescence changes from 544 nm to 401 nm upon the addition of HO, which converts the nonluminescent 3-CPBA into a luminescent compound.
  • The intensity ratio of luminescence at 401 and 544 nm correlates with HO concentration, showing a strong sensitivity and selectivity for detecting HO in environmental samples.

Article Abstract

A ratiometric luminescent probe was fabricated using adenosine monophosphate (AMP) as a bridging ligand and 3-carboxyphenylboronic acid (3-CPBA) as the sensitizer and functional ligand that allowed the probe to recognize hydrogen peroxide (HO). The probe was labeled AMP-Tb/3-CPBA. Adding HO caused the nonluminescent 3-CPBA to be converted into 3-hydroxybenzoic acid, which strongly luminesces at 401 nm. This meant that adding HO decreased the AMP-Tb/3-CPBA luminescence intensity at 544 nm and caused luminescence at 401 nm. The 401 and 544 nm luminescence intensity ratio (I/I) was strongly associated with the HO concentration between 0.1 and 60.0 μM, and the detection limit was 0.23 μM. Dual emission reverse-change ratio luminescence sensing using the probe allowed environmental effects to be excluded and the assay to be very selective. We believe that the results pave the way for the development of new functionalized lanthanide coordination polymers for use in luminescence assays.

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http://dx.doi.org/10.1016/j.saa.2024.124114DOI Listing

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Article Synopsis
  • A ratiometric luminescent probe was developed using AMP as a bridging ligand and 3-CPBA as the sensitizer, enabling it to detect hydrogen peroxide (HO).
  • The probe's luminescence changes from 544 nm to 401 nm upon the addition of HO, which converts the nonluminescent 3-CPBA into a luminescent compound.
  • The intensity ratio of luminescence at 401 and 544 nm correlates with HO concentration, showing a strong sensitivity and selectivity for detecting HO in environmental samples.
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