Citation: Xiuting Gao, Nana Chen, Minglei Cao, Yang Shi, Qingfu Zhang. A Water-Stable 3D Eu(Ⅲ)-Organic Framework as a Bi-Functional Ratiometric Luminescent Sensor for Fast, Sensitive and Selective Detection of ODZ and Hg²⁺ in Aqueous Media[J]. Chinese Journal of Structural Chemistry, ;2022, 41(11): 221111. doi: 10.14102/j.cnki.0254-5861.2022-0171 shu

A Water-Stable 3D Eu(Ⅲ)-Organic Framework as a Bi-Functional Ratiometric Luminescent Sensor for Fast, Sensitive and Selective Detection of ODZ and Hg²⁺ in Aqueous Media

1.
College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, Shandong 252059, China
2.
Shandong Ruijie New Material Co.Ltd, Liaocheng, Shandong 252000, China

Corresponding author: Qingfu Zhang, zhangqingfu@lcu.edu.cn
Received Date: 22 July 2022
Accepted Date: 22 August 2022
Available Online: 30 August 2022

Figures(9)

The fast, sensitive and selective detection of some antibiotics and heavy metal cations in water is highly desirable for environmental protection and human health, but it is still currently challenging. In this work, a new luminescent Eu(III)-based metal-organic framework (MOF), {[(CH₃)₂NH₂][Eu(L)₂(H₂O)₂]·xDMF}_n (1) [H₂L = 4, 4'-((naphthalene-1, 4-dicarbonyl)bis(azanediyl))dibenzoic acid], was solvothermally synthesized. Complex 1 exhibits good water stability and luminescent property and could serve as a bi-functional ratiometric luminescent sensor for fast, sensitive and selective detection of ornidazole (ODZ) and Hg²⁺ in aqueous solution. The corresponding luminescent mechanism has also been discussed. This work indicates that 1 as a promising luminescent material exhibits luminescent quenching behavior for ODZ and luminescent enhancement behavior for Hg²⁺ in H₂O, which will promote the practical application of Ln-MOF-based ratiometric luminescent sensors in monitoring antibiotics and metal ions pollutants in the environmental water matrices.
- lanthanide MOF,
- ratiometric luminescent sensor,
- water-stability,
- antibiotics,
- metal ions
1. [1]
  Liu, X.; Steele, J. C.; Meng, X. Z. Usage, residue, and human health risk of antibiotics in Chinese aquaculture: a review. Environ. Pollut. 2017, 223, 161-169. doi: 10.1016/j.envpol.2017.01.003
2. [2]
  Wang, J. L.; Zhuan, R.; Chu, L. B. The occurrence, distribution and degradation of antibiotics by ionizing radiation: an overview. Sci. Total Environ. 2019, 646, 1385-1397. doi: 10.1016/j.scitotenv.2018.07.415
3. [3]
  Zhang, Q. Q.; Ying, G. G.; Pan, C. G.; Liu, Y. S.; Zhao, J. L. Comprehensive evaluation of antibiotics emission and fate in the river basins of China: source analysis, multimedia modeling, and linkage to bacterial resistance. Environ. Sci. Technol. 2015, 49, 6772-6782. doi: 10.1021/acs.est.5b00729
4. [4]
  Kümmerer, K. Antibiotics in the aquatic environment-a review-part I. Chemosphere 2009, 75, 417-434. doi: 10.1016/j.chemosphere.2008.11.086
5. [5]
  Grandjean, P.; Landrigan, P. J. Developmental neurotoxicity of industrial chemicals. Lancet 2006, 368, 2167-2178. doi: 10.1016/S0140-6736(06)69665-7
6. [6]
  Toussaint, B.; Chedin, M.; Vincent, U.; Bordin, G.; Rodriguez, A. R. Determination of (fluoro)quinolone antibiotic residues in pig kidney using liquid chromatography-tandem mass spectrometry part II: intercomparison exercise. J. Chromatogr. A 2005, 1088, 40-48. doi: 10.1016/j.chroma.2005.02.016
7. [7]
  Tabrizchi, M.; ILbeigi, V. Detection of explosives by positive corona discharge ion mobility spectrometry. J. Hazard. Mater. 2010, 176, 692-696. doi: 10.1016/j.jhazmat.2009.11.087
8. [8]
  Pérez-Fernández, V.; Domínguez-Vega, E.; Crego, A. L.; Ángeles García, M.; Marina, M. L. Recent advances in the analysis of antibiotics by CE and CEC. Electrophoresis 2012, 33, 127-146. doi: 10.1002/elps.201100409
9. [9]
  Cheng, Y. J.; Huang, S. H.; Singco, B.; Huang, H. Y. Analyses of sulfonamide antibiotics in meat samples by on-line concentration capillary electrochromatography-mass spectrometry. J. Chromatogr. A 2011, 1218, 7640-7647. doi: 10.1016/j.chroma.2011.06.027
10. [10]
  Zheng, W.; Zhou, S. Y.; Chen, Z.; Hu, P.; Liu, Y. S.; Tu, D. T.; Zhu, H. M.; Li, R. F.; Huang, M. D.; Chen, X. Y. Sub-10 nm lanthanide-doped CaF₂ nanoprobes for time-resolved luminescent biodetection. Angew. Chem. Int. Ed. 2013, 52, 6671-6676. doi: 10.1002/anie.201302481
11. [11]
  Zhang, M. R.; Zheng, W.; Liu, Y.; Huang, P.; Gong, Z. L.; Wei, J. J.; Gao, Y.; Zhou, S. Y.; Li, X. J.; Chen, X. Y. A new class of blue-LED-excitable NIR-II luminescent nanoprobes based on lanthanide-doped CaS nanoparticles. Angew. Chem. Int. Ed. 2019, 58, 9556-9560. doi: 10.1002/anie.201905040
12. [12]
  Zhang, C. G.; Zhang, M. R.; Zheng, W.; Wei, J. J.; Wang, S. T.; Huang, P.; Cheng, X. W.; Dai, T.; Chen, Z.; Chen, X. Y. A new class of luminescent nanoprobes based on main-group Sb³⁺ emitters. Nano Res. 2022, 15, 179-185. doi: 10.1007/s12274-021-3454-4
13. [13]
  Allendorf, M. D.; Bauer, C. A.; Bhakta, R. K.; Houk, R. J. T. Lumine-scent metal-organic frameworks. Chem. Soc. Rev. 2009, 38, 1330-1352. doi: 10.1039/b802352m
14. [14]
  Rasheed, T.; Nabeel, F. Luminescent metal-organic frameworks as potential sensory materials for various environmental toxic agents. Coord. Chem. Rev. 2019, 401, 213065. doi: 10.1016/j.ccr.2019.213065
15. [15]
  Lu, Z. Q.; Li, Y. Z.; Hao, C.; Ru, Y.; Yang, S. J.; Zhang, N. D.; Fu, Y. Q.; Wu, W. L.; Zhou, Y. Synthesis, crystal structure and luminescent/magnetic properties of two metal-organic frameworks based on multi-N/O-donor mixed ligands. Chin. J. Struct. Chem. 2021, 40, 1122-1130.
16. [16]
  Yin, Y. J.; Fang, W. J.; Liu, S. Q.; Chen, J.; Zhang, J. J.; Ni, A. Y. A new bio-metal-organic framework: synthesis, crystal structure and selectively sensing of Fe(III) Ion in aqueous medium. Chin. J. Struct. Chem. 2021, 40, 1456-1460.
17. [17]
  Wang, N.; Zhou, M. S.; Li, T.; Fu, H. R.; Li, F. F. Synthesis and detection of pesticides of luminescent metal-organic framework based on carboxyl-decorating tetraphenylethylene. Chin. J. Struct. Chem. 2020, 39, 1496-1502.
18. [18]
  Chen, L.; Liu, D. H.; Peng, J.; Du, Q. Z.; He, H. Ratiometric fluorescence sensing of metal-organic frameworks: tactics and perspectives. Coord. Chem. Rev. 2020, 404, 213113. doi: 10.1016/j.ccr.2019.213113
19. [19]
  Yan, B. Lanthanide-functionalized metal-organic framework hybrid systems to create multiple luminescent centers for chemical sensing. Acc. Chem. Res. 2017, 50, 2789-2798. doi: 10.1021/acs.accounts.7b00387
20. [20]
  Yang, L.; Song, Y. H.; Wang, L. Multi-emission metal-organic framework composites for multicomponent ratiometric fluorescence sensing: recent developments and future challenges. J. Mater. Chem. B 2020, 8, 3292-3315. doi: 10.1039/C9TB01931F
21. [21]
  Yin, H. Q.; Yin, X. B. Metal-organic frameworks with multiple luminescence emissions: designs and applications. Acc. Chem. Res. 2020, 53, 485-495. doi: 10.1021/acs.accounts.9b00575
22. [22]
  Wu, S. Y.; Min, H.; Shi, W.; Cheng, P. Multicenter metal-organic framework-based ratiometric fluorescent sensors. Adv. Mater. 2020, 32, 1805871. doi: 10.1002/adma.201805871
23. [23]
  (a) Li, Y.; Pang, J. D.; Bu, X. H. Multi-functional metal-organic frameworks for detection and removal of water pollutions. Chem. Commun. 2022, 58, 7890-7908; (b) Yang, Y.; Pang, J. D.; Li, Y. W.; Sun, L.; Zhang, H.; Zhang, L. Y.; Xu, S. T.; Jiang, T. W. Fabrication of a stable europium-based luminescent sensor for fast detection of urinary 1‑hydroxypyrene constructed from a tetracarboxylate ligand. Inorg. Chem. 2021, 60, 19189-19196.
24. [24]
  Yang, Y.; Chen, L.; Jiang, F. L.; Wu, M. Y.; Pang, J. D.; Wan, X. Y.; Hong, M. C. A water-stable 3D Eu-MOF based on a metallacyclodimeric secondary building unit for sensitive fluorescent detection of acetone molecules. CrystEngComm 2019, 21, 321-328. doi: 10.1039/C8CE01875H
25. [25]
  Shu, Y.; Ye, Q. Y.; Dai, T.; Xu, Q.; Hu, X. Y. Encapsulation of luminescent guests to construct luminescent metal-organic frameworks for chemical sensing. ACS Sens. 2021, 6, 641-658. doi: 10.1021/acssensors.0c02562
26. [26]
  Zhang, X.; Hu, Q.; Xia, T. F.; Zhang, J.; Yang, Y.; Cui, Y. J.; Chen, B. L.; Qian, G. D. Turn-on and ratiometric luminescent sensing of hydrogen sulfide based on metal-organic frameworks. ACS Appl. Mater. Interfaces 2016, 8, 32259-32265. doi: 10.1021/acsami.6b12118
27. [27]
  Zeng, X. L.; Hu, J.; Zhang, M.; Wang, F. L.; Wu, L.; Hou, X. D. Visual detection of fluoride anions using mixed lanthanide metal-organic frameworks with a smartphone. Anal. Chem. 2020, 92, 2097-2102. doi: 10.1021/acs.analchem.9b04598
28. [28]
  Yu, L.; Zheng, Q. T.; Wang, H.; Liu, C. X.; Huang, X. Q.; Xiao, Y. X. Double-color lanthanide metal-organic framework based logic device and visual ratiometric fluorescence water microsensor for solid pharmaceuticals. Anal. Chem. 2020, 92, 1402-1408. doi: 10.1021/acs.analchem.9b04575
29. [29]
  (a) Alvarez, S.; Alemany, P.; Casanova, D.; Cirera, J.; Llunell, M.; Avnir, D. Shape maps and polyhedral interconversion paths in transition metal chemistry. Coord. Chem. Rev. 2005, 249, 1693-1708; (b) Cirera, J.; Ruiz, E.; Alvarez, S. Shape and spin state in four-coordinate transition-metal complexes: the case of the d⁶ configuration. Chem. Eur. J. 2006, 12, 3162-3167.
30. [30]
  Lin, Z. J.; Yang, Z.; Liu, T. F.; Huang, Y. B.; Cao, R. Microwaveassisted synthesis of a series of lanthanide metal-organic frameworks and gas sorption properties. Inorg. Chem. 2012, 51, 1813-1820. doi: 10.1021/ic202082w
31. [31]
  Burrows, A. D.; Cassar, K.; Düren, T.; Friend, R. M. W.; Mahon, M. F.; Rigby, S. P.; Savarese, T. L. Syntheses, structures and properties of cadmium benzenedicarboxylate metal-organic frameworks. Dalton Trans. 2008, 2465-2474.
32. [32]
  Spek, A. L. Structure validation in chemical crystallography. Acta Cryst. 2009, D65, 148-155.
33. [33]
  Wang, X. H.; Lei, M. Y.; Zhang, T. J.; Zhang, Q. F.; Zhang, R. F.; Yang, M. A water-stable multi-responsive luminescent Zn-MOF sensor for detecting TNP, NZF and Cr₂O₇^2- in aqueous media. Dalton Trans. 2021, 50, 3816-3824. doi: 10.1039/D0DT03049J
34. [34]
  Zhang, Q. F.; Lei, M. Y.; Kong, F.; Yang, Y. A water-stable homochiral luminescent MOF constructed from an achiral acylamide-containing dicarboxylate ligand for enantioselective sensing of penicillamine. Chem. Commun. 2018, 54, 10901-10904. doi: 10.1039/C8CC06274A
35. [35]
  Hao, J. N.; Yan, B. Highly sensitive and selective fluorescent probe for Ag⁺ based on a Eu³⁺ post-functionalized metal-organic framework in aqueous media. J. Mater. Chem. A 2014, 2, 18018-18025. doi: 10.1039/C4TA03990D
36. [36]
  Zhang, X.; Luo, X.; Zhang, N. X.; Wu, J.; Huang, Y. Q. A highly selective and sensitive Zn(II) coordination polymer luminescent sensor for Al³⁺ and NACs in the aqueous phase. Inorg. Chem. Front. 2017, 4, 1888-1894. doi: 10.1039/C7QI00549K
37. [37]
  Cho, W.; Lee, H. J.; Choi, G.; Choi, S.; Oh, M. Dual changes in conformation and optical properties of fluorophores within a metal-organic framework during framework construction and associated sensing event. J. Am. Chem. Soc. 2014, 136, 12201-12204. doi: 10.1021/ja504204d
38. [38]
  Zhang, Q. F.; Lei, M. Y.; Yan, H.; Wang, J. Y.; Shi, Y. A water stable 3D luminescent metal-organic framework based on heterometallic [Eu₆^IIIZn^II] clusters showing highly sensitive, selective, and reversible detection of ronidazole. Inorg. Chem. 2017, 56, 7610-7614. doi: 10.1021/acs.inorgchem.7b01156
39. [39]
  Arnaud, N.; Vaquer, E.; Georges, J. Comparative study of the luminescent properties of europium and terbium coordinated with thenoyltrifluoroacetone or pyridine-2, 6-dicarboxylic acid in aqueous solutions. Analyst 1998, 123, 261-265. doi: 10.1039/a706522a
40. [40]
  Tan, H. L.; Chen, Y. Ag⁺-enhanced fluorescence of lanthanide/nucleotide coordination polymers and Ag⁺ sensing. Chem. Commun. 2011, 47, 12373-12375. doi: 10.1039/c1cc16003f
41. [41]
  Tang, Q.; Liu, S. X.; Liu, Y. W.; Miao, J.; Li, S. J.; Zhang, L; Shi, Z.; Zheng, Z. P. Cation sensing by a luminescent metal-organic framework with multiple Lewis basic sites. Inorg. Chem. 2013, 52, 2799-2801. doi: 10.1021/ic400029p
42. [42]
  Zhao, B.; Chen, X. Y.; Cheng, P.; Liao, D. Z.; Yan, S. P.; Jiang, Z. H. Coordination polymers containing 1D channels as selective luminescent probes. J. Am. Chem. Soc. 2004, 126, 15394-15395. doi: 10.1021/ja047141b
43. [43]
  Hanaoka, K.; Kikuchi, K.; Kojima, H.; Urano, Y.; Nagano, T. Development of a zinc ion-selective luminescent lanthanide chemosensor for biological applications. J. Am. Chem. Soc. 2004, 126, 12470-12476. doi: 10.1021/ja0469333
44. [44]
  Razavi, S. A. A.; Masoomi, M. Y.; Morsali, A. Double solvent sensing method for improving sensitivity and accuracy of Hg(II) detection based on different signal transduction of a tetrazine-functionalized pillared metalorganic framework. Inorg. Chem. 2017, 56, 9646-9652. doi: 10.1021/acs.inorgchem.7b01155
45. [45]
  Sheldrick, G. M. Crystal structure refinement with SHELXL. Acta Cryst. 2015, C71, 3-8.
46. [46]
  Sluis, P. V. D.; Spek, A. L. BYPASS: an effective method for the refinement of crystal structures containing disordered solvent regions. Acta Cryst. 1990, A46, 194-201.
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沈阳化工大学材料科学与工程学院沈阳 110142

A Water-Stable 3D Eu(Ⅲ)-Organic Framework as a Bi-Functional Ratiometric Luminescent Sensor for Fast, Sensitive and Selective Detection of ODZ and Hg2+ in Aqueous Media

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通讯作者: 陈斌, bchen63@163.com

A Water-Stable 3D Eu(Ⅲ)-Organic Framework as a Bi-Functional Ratiometric Luminescent Sensor for Fast, Sensitive and Selective Detection of ODZ and Hg²⁺ in Aqueous Media