|
1
|
Luo Q, Wang L, Wu S, Lin L, Yu X, Potapov A, Sun Y, Zhang Y, Zhu M. Highly sensitive sensing of DPA by lanthanide metal-organic frameworks and detection of fiber membranes. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 310:123849. [PMID: 38241931 DOI: 10.1016/j.saa.2024.123849] [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: 09/17/2023] [Revised: 12/14/2023] [Accepted: 01/03/2024] [Indexed: 01/21/2024]
Abstract
The detection of 2,6-pyridinecarboxylic acid (DPA), as a biomarker of Bacillus anthracis, has attracted wide attention. In previous reports of DPA detection, fluorescent probes may not have high specificity. Therefore, the rational design and development of fluorescent sensors with excellent performance is of great significance for the detection of DPA. In this study, two novel lanthanide metal-organic frameworks (Ln-MOFs) were synthesized by hydrothermal method using 3-polyfluorobiphenyl-3 ', 4,5 ' -tricarboxylic acid (H2FPTA) as ligand. Studies have shown that Ln-MOFs can detect DPA in real time, with detection limits of 0.54 μM and 0.67 μM, respectively, and have a high recovery rate (95 % -108 %) in fetal bovine serum. As a self-calibration sensor, other substances in the blood can be clearly distinguished by a two-dimensional fluorescence code diagram. After the Ln-MOFs were spun into nanofiber membranes, they responded quickly to DPA. This increases practicability and provides a promising idea for the development of simple and efficient ratio sensors.
Collapse
Affiliation(s)
- Qiongli Luo
- The Key Laboratory of the Inorganic Molecule-Based Chemistry of Liaoning Province and Laboratory of Coordination Chemistry, Shenyang University of Chemical Technology, Shenyang, Liaoning 110142, PR China
| | - Lei Wang
- Center of Physical Chemistry Test, Shenyang University of Chemical Technology, Shenyang, Liaoning 110142, PR China
| | - Shuangyan Wu
- The Key Laboratory of the Inorganic Molecule-Based Chemistry of Liaoning Province and Laboratory of Coordination Chemistry, Shenyang University of Chemical Technology, Shenyang, Liaoning 110142, PR China
| | - Lin Lin
- Department of Pharmacology, Shenyang medical colleges, Shenyang 110034, PR China
| | - Xiaolin Yu
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, 3 Lavrentiev Ave., 630090 Novosibirsk, Russia
| | - Andrei Potapov
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, 3 Lavrentiev Ave., 630090 Novosibirsk, Russia
| | - Yaguang Sun
- The Key Laboratory of the Inorganic Molecule-Based Chemistry of Liaoning Province and Laboratory of Coordination Chemistry, Shenyang University of Chemical Technology, Shenyang, Liaoning 110142, PR China
| | - Ying Zhang
- The Key Laboratory of the Inorganic Molecule-Based Chemistry of Liaoning Province and Laboratory of Coordination Chemistry, Shenyang University of Chemical Technology, Shenyang, Liaoning 110142, PR China.
| | - Mingchang Zhu
- The Key Laboratory of the Inorganic Molecule-Based Chemistry of Liaoning Province and Laboratory of Coordination Chemistry, Shenyang University of Chemical Technology, Shenyang, Liaoning 110142, PR China.
| |
Collapse
|
|
2
|
Lin X, Wu H, Zeng S, Peng T, Zhang P, Wan X, Lang Y, Zhang B, Jia Y, Shen R, Yin B. A self-designed device integrated with a Fermat spiral microfluidic chip for ratiometric and automated point-of-care testing of anthrax biomarker in real samples. Biosens Bioelectron 2023; 230:115283. [PMID: 37019031 DOI: 10.1016/j.bios.2023.115283] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 03/12/2023] [Accepted: 03/28/2023] [Indexed: 04/03/2023]
Abstract
A desirable lanthanide-based ratiometric fluorescent probe was designed and integrated into a self-designed Fermat spiral microfluidic chip (FS-MC) for the automated determination of a unique bacterial endospore biomarker, dipicolinic acid (DPA), with high selectivity and sensitivity. Here, a blue emission wavelength at 425 nm was generated in the Fermat spiral structure by mixing the europium (Eu3+) and luminol to form the Eu3+/Luminol sensing probe. DPA in the reservoir can be used to specifically bind to Eu3+ under the negative pressure and transfer energy from DPA to Eu3+ sequentially via an antenna effect, thus resulting in a significant increase in the red fluorescence emission peak at 615 nm. According to the fluorescence intensity ratio (F615/F425), a good linearity can be obtained with increasing the concentration of DPA from 0 to 200 μM with a limit of detection as low as 10.11 nM. Interestingly, the designed FS-MC can achieve rapid detection of DPA in only 1 min, reducing detection time and improving sensitivity. Furthermore, a self-designed device integrated with the FS-MC and a smartphone color picker APP was employed for the rapid automatic point-of-care testing (POCT) of DPA in the field, simplifying complex processes and reducing testing times, thus confirming the great promise of this ready-to-use measurement platform for in situ inspection.
Collapse
|
|
3
|
Sun Y, Dramou P, Song Z, Zheng L, Zhang X, Ni X, He H. Lanthanide Metal Doped Organic Gel as Ratiometric Fluorescence Probe for Selective Monitoring of Ciprofloxacin. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|