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New Ln-MOFs based on mixed organic ligands : synthesis, structure and efficient luminescence sensing of the Hg2+ ions in aqueous solutions

(2021) DALTON TRANSACTIONS. 50(43). p.15612-15619
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Abstract
In view of Hg2+ ion sensing by luminescence, a series of new, phenanthroline-decorated 3D lanthanide metal organic frameworks (Ln-MOFs) valorising an original combination of four different lanthanides and two organic ligands, i.e. thiobis(4-methylene-benzoic acid) (H(2)tmba) and 1,10-phenanthroline (phen), have been successfully synthesized, namely {[Ln(4)(tmba)(6)(phen)(4)]center dot m(H2O)(phen)}(n) [Ln = Ce, m = 3 (1); Pr, m = 1 (2); Eu, m = 3 (3); and Tb, m = 3 (4)]. Compounds 1-4 were characterised by single-crystal X-ray diffraction, elemental and thermogravimetric analyses, and powder X-ray diffraction. The luminescence properties of complexes 3 and 4 were thoroughly investigated. It is herein proved that compound 3 sensitively and selectively acts as an excellent luminescent probe for the detection of Hg2+ ions in waters, with a detection limit of 1.00 mu M. As additional assets, 3 displays superb stability over a wide pH range (3-12) of the aqueous media, as well as convenient recycling after completion of the detection experiments. The rationale for the observed luminescence quenching effect of mercury might be a strong interaction arising between Hg2+ ions and the carboxylate oxygen atoms of the tmba(2-) ligand. The results open new perspectives for applications in environmental remediation.
Keywords
Inorganic Chemistry, HIGHLY SELECTIVE DETECTION, FRAMEWORKS, FLUORESCENCE, NANOPARTICLES, MERCURY(II), CONVERSION, POLYMERS, CATALYST, SORPTION, REMOVAL

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Citation

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MLA
Wang, Shu-Ju, et al. “New Ln-MOFs Based on Mixed Organic Ligands : Synthesis, Structure and Efficient Luminescence Sensing of the Hg2+ Ions in Aqueous Solutions.” DALTON TRANSACTIONS, vol. 50, no. 43, 2021, pp. 15612–19, doi:10.1039/d1dt02687a.
APA
Wang, S.-J., Li, Q., Xiu, G.-L., You, L.-X., Ding, F., Van Deun, R., … Sun, Y.-G. (2021). New Ln-MOFs based on mixed organic ligands : synthesis, structure and efficient luminescence sensing of the Hg2+ ions in aqueous solutions. DALTON TRANSACTIONS, 50(43), 15612–15619. https://doi.org/10.1039/d1dt02687a
Chicago author-date
Wang, Shu-Ju, Qian Li, Guan-Lin Xiu, Li-Xin You, Fu Ding, Rik Van Deun, Ileana Dragutan, Valerian Dragutan, and Ya-Guang Sun. 2021. “New Ln-MOFs Based on Mixed Organic Ligands : Synthesis, Structure and Efficient Luminescence Sensing of the Hg2+ Ions in Aqueous Solutions.” DALTON TRANSACTIONS 50 (43): 15612–19. https://doi.org/10.1039/d1dt02687a.
Chicago author-date (all authors)
Wang, Shu-Ju, Qian Li, Guan-Lin Xiu, Li-Xin You, Fu Ding, Rik Van Deun, Ileana Dragutan, Valerian Dragutan, and Ya-Guang Sun. 2021. “New Ln-MOFs Based on Mixed Organic Ligands : Synthesis, Structure and Efficient Luminescence Sensing of the Hg2+ Ions in Aqueous Solutions.” DALTON TRANSACTIONS 50 (43): 15612–15619. doi:10.1039/d1dt02687a.
Vancouver
1.
Wang S-J, Li Q, Xiu G-L, You L-X, Ding F, Van Deun R, et al. New Ln-MOFs based on mixed organic ligands : synthesis, structure and efficient luminescence sensing of the Hg2+ ions in aqueous solutions. DALTON TRANSACTIONS. 2021;50(43):15612–9.
IEEE
[1]
S.-J. Wang et al., “New Ln-MOFs based on mixed organic ligands : synthesis, structure and efficient luminescence sensing of the Hg2+ ions in aqueous solutions,” DALTON TRANSACTIONS, vol. 50, no. 43, pp. 15612–15619, 2021.
@article{8728658,
  abstract     = {{In view of Hg2+ ion sensing by luminescence, a series of new, phenanthroline-decorated 3D lanthanide metal organic frameworks (Ln-MOFs) valorising an original combination of four different lanthanides and two organic ligands, i.e. thiobis(4-methylene-benzoic acid) (H(2)tmba) and 1,10-phenanthroline (phen), have been successfully synthesized, namely {[Ln(4)(tmba)(6)(phen)(4)]center dot m(H2O)(phen)}(n) [Ln = Ce, m = 3 (1); Pr, m = 1 (2); Eu, m = 3 (3); and Tb, m = 3 (4)]. Compounds 1-4 were characterised by single-crystal X-ray diffraction, elemental and thermogravimetric analyses, and powder X-ray diffraction. The luminescence properties of complexes 3 and 4 were thoroughly investigated. It is herein proved that compound 3 sensitively and selectively acts as an excellent luminescent probe for the detection of Hg2+ ions in waters, with a detection limit of 1.00 mu M. As additional assets, 3 displays superb stability over a wide pH range (3-12) of the aqueous media, as well as convenient recycling after completion of the detection experiments. The rationale for the observed luminescence quenching effect of mercury might be a strong interaction arising between Hg2+ ions and the carboxylate oxygen atoms of the tmba(2-) ligand. The results open new perspectives for applications in environmental remediation.}},
  author       = {{Wang, Shu-Ju and Li, Qian and Xiu, Guan-Lin and You, Li-Xin and Ding, Fu and Van Deun, Rik and Dragutan, Ileana and Dragutan, Valerian and Sun, Ya-Guang}},
  issn         = {{1477-9226}},
  journal      = {{DALTON TRANSACTIONS}},
  keywords     = {{Inorganic Chemistry,HIGHLY SELECTIVE DETECTION,FRAMEWORKS,FLUORESCENCE,NANOPARTICLES,MERCURY(II),CONVERSION,POLYMERS,CATALYST,SORPTION,REMOVAL}},
  language     = {{eng}},
  number       = {{43}},
  pages        = {{15612--15619}},
  title        = {{New Ln-MOFs based on mixed organic ligands : synthesis, structure and efficient luminescence sensing of the Hg2+ ions in aqueous solutions}},
  url          = {{http://doi.org/10.1039/d1dt02687a}},
  volume       = {{50}},
  year         = {{2021}},
}

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