Rational fabrication of an anionic zinc carboxylate framework as a fluorescent probe for 2,6-pyridinedicarboxylic acid

Abstract

Sensitive, rapid and convenient sensing of 2,6-pyridinedicarboxylic acid (DPA, a biomarker for Bacillus anthracis) is crucial for the screening and diagnosis of anthrax. Metal organic framework (MOF)-based sensors are very promising for sensing DPA; however, the design and construction of high-performance sensors with high specificity and sensitivity is still challenging. In this work, a novel luminescent carboxylate MOF (TTCA-Zn) was assembled and employed specifically for the recognition of DPA. We found that it has a three-dimensional anionic framework structure with sqc topology and uses [NH2(CH3)2]+ as the counter ions. The fluorescence intensity of TTCA-Zn displays a “turn-on” response to the addition of DPA and can function as a high-performance fluorescent sensor of DPA over a wide detection range of 0 to 70 μM, with a low detection limit of 14 nM. The sensing mechanism is also systematically investigated. This work not only reports a new fluorescence sensing material for DPA, but also provides a strategy for the structural design, assembly, and application of such sensors.

Graphical abstract: Rational fabrication of an anionic zinc carboxylate framework as a fluorescent probe for 2,6-pyridinedicarboxylic acid

Supplementary files

Article information

Article type
Paper
Submitted
05 Sep 2024
Accepted
30 Oct 2024
First published
31 Oct 2024

Dalton Trans., 2024, Advance Article

Rational fabrication of an anionic zinc carboxylate framework as a fluorescent probe for 2,6-pyridinedicarboxylic acid

H. Xie, H. Yu, X. Xu and S. Tang, Dalton Trans., 2024, Advance Article , DOI: 10.1039/D4DT02529F

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements