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Xie HH, Wang LW, Tang SF. Fabrication of a Terbium-Functionalized Cadmium Organic Framework with Proper Energy Levels as a Ratiometric Probe of an Anthrax Biomarker. Inorg Chem 2024; 63:13516-13524. [PMID: 38959250 DOI: 10.1021/acs.inorgchem.4c01644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/05/2024]
Abstract
Anthrax bacillus is a very dangerous zoonotic pathogen that seriously endangers public health. Rapid and accurate qualitative and quantitative detection of its biomarkers, 2,6-dipicolinic acid (DPA), is crucial for the prevention and treatment of this pathogenic bacterium. In this work, a novel Cd-based MOF (TTCA-Cd) has been synthesized from a polycarboxylate ligand, [1,1':2',1″-terphenyl]-4,4',4″,5'-tetracarboxylic acid (H4TTCA), and further doped with Tb(III), forming a dual-emission lanthanide-functionalized MOF hybrid (TTCA-Cd@Tb). TTCA-Cd@Tb can be developed as a high-performance ratiometric fluorescent sensor toward DPA with a very low detection limit of 7.14 nM and high selectivity in a wide detection range of 0-200 μM, demonstrating a big advancement and providing a new option for the detection of DPA.
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Affiliation(s)
- Hui-Hui Xie
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Changcheng Road 700, Chengyang District, Qingdao 266109, China
| | - Li-Wen Wang
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Changcheng Road 700, Chengyang District, Qingdao 266109, China
| | - Si-Fu Tang
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Changcheng Road 700, Chengyang District, Qingdao 266109, China
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Cao R, Zhang M, Tang W, Wu J, Luo Y, Chen Y, Liu Z, Hao F, Sheng L, Xu H. Spatial confinement of styryl pyridine salt derivative in MCM-22 molecular sieve network for boosted fluorescence emission and stable ratiometric sensing of bacillus anthracis biomarkers. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 310:123964. [PMID: 38286080 DOI: 10.1016/j.saa.2024.123964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 01/21/2024] [Accepted: 01/22/2024] [Indexed: 01/31/2024]
Abstract
In this work, a stable ratiometric nanofluorescent probe for the detection of 2,6-dipicolinic acid (DPA), a Bacillus anthracis biomarker, was developed based on confinement-induced emission enhancement of cationic styrylpyridine salt derivative L in MCM-22 molecular sieve pores. The cationic L and the lanthanide Tb3+ were loaded into the pores of the molecular sieve by electrostatic interaction with the negatively charged AlO4 tetrahedron unit, and L exhibited enhanced red fluorescence emission as a stable fluorescence reference mark in the nanoprobe platform due to the restricted molecular torsion of L in the pores of MCM-22. At the same time, the characteristic green fluorescence emission of Tb3+ can be excited by energy transfer due to the "antenna effect" of DPA. The prepared Tb-L@MCM-22 nanoprobe showed specific selectivity and stable fluorescence ratiometric detection of DPA in tap water, lake water, bovine serum and actual bacterial spores. Benefiting from the confinement-induced fluorescence enhancement effect of L in the MCM-22 molecular sieve pores, the obtained Tb-L@MCM-22 can provide a stable reference signal for the fluorescence ratiometric detection of DPA with a limit of detection (LOD) of 78.6 nM and 1.310 × 104 spores per mL. More importantly, combining of the Tb-L@MCM-22 based DPA detection test strips with a smartphone app demonstrated a stable, convenient and rapid method for detecting of anthrax biomarkers.
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Affiliation(s)
- Rui Cao
- School of Chemistry and Materials Engineering, Fuyang Normal University, Fuyang, Anhui 236037, PR China
| | - Mengyu Zhang
- School of Chemistry and Materials Engineering, Fuyang Normal University, Fuyang, Anhui 236037, PR China
| | - Wen Tang
- School of Chemistry and Materials Engineering, Fuyang Normal University, Fuyang, Anhui 236037, PR China
| | - Jing Wu
- School of Chemistry and Materials Engineering, Fuyang Normal University, Fuyang, Anhui 236037, PR China
| | - Yang Luo
- School of Chemistry and Materials Engineering, Fuyang Normal University, Fuyang, Anhui 236037, PR China
| | - Yi Chen
- School of Chemistry and Materials Engineering, Fuyang Normal University, Fuyang, Anhui 236037, PR China
| | - Zhaodi Liu
- School of Chemistry and Materials Engineering, Fuyang Normal University, Fuyang, Anhui 236037, PR China.
| | - Fuying Hao
- School of Chemistry and Materials Engineering, Fuyang Normal University, Fuyang, Anhui 236037, PR China
| | - Liangquan Sheng
- School of Chemistry and Materials Engineering, Fuyang Normal University, Fuyang, Anhui 236037, PR China
| | - Huajie Xu
- School of Chemistry and Materials Engineering, Fuyang Normal University, Fuyang, Anhui 236037, PR China.
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Application of three Ln(Ⅲ)-coordination polymers in fields of luminescence, antibacteria and detection of Fe3+ and 4-nitrophenol. J RARE EARTH 2022. [DOI: 10.1016/j.jre.2022.08.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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