New highly luminescent europium(Ⅲ) complex covalently bonded with titania-based host via using a terpyridine carboxylate derivative linker for fluorescence sensing

Bai, Chao; Wei, Feng-Han; Hu, Huai‐Ming; Yan, Lei; Wang, Xiaofang; Xue, Gi

doi:10.1016/j.jlumin.2020.117545

Cited by 12 publications

(3 citation statements)

References 47 publications

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“…At the same time, the N 1s peak shifted from 399.65 to 400.02 eV (Figure S9). Cu 2+ is an unsaturated electron configuration, which may interact with terpyridyl groups with rich electrons in the ligand L, so some electrons (or charges) transfer to Cu 2+ ions, which affects the coordination in the Cd-nanosheet and causes the change of binding energy, eventually leading to the luminescence quenching of the Cd-nanosheet. − …”

Section: Resultsmentioning

confidence: 99%

Multiterpyridyl Ligand/Cadmium(II) Coordination Polymer Nanosheets for Recoverable Luminescent Sensors

Zeng

et al. 2022

ACS Appl. Nano Mater.

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A cadmium(II) coordination polymer nanosheet (Cd-nanosheet) has been successfully constructed by a liquid–liquid interface-assisted method based on the coordination reaction between 1,3,5-tri(4-(2,2’:6′,2″-terpyridyl)phenyl)benzene and cadmium(II) nitrate. The Cd-nanosheet was characterized by elemental analysis, FT-IR spectroscopy, XPS, and fluorescence spectroscopy. The expected 2D lamellar structure was also confirmed by various microscopic techniques. The Cd-nanosheet is insoluble in aqueous and organic solvents. Due to its excellent fluorescence performance, we focus on its application in the detection of organic small molecules and metal ions. The luminescence quenching constant Ksv of the Cd-nanosheet for Cu2+ ions and nitrobenzene is 4.73 × 104 and 2.582 × 103 M–1, respectively. The results demonstrate that Cd-nanosheets can serve as detection sensors with high selectivity and sensitivity to detect nitrobenzene and Cu2+ ions.

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Section: Resultsmentioning

confidence: 99%

Multiterpyridyl Ligand/Cadmium(II) Coordination Polymer Nanosheets for Recoverable Luminescent Sensors

Zeng

et al. 2022

ACS Appl. Nano Mater.

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“…The stretching of carboxylic groups is not found in the spectra of SiO 2 @mTiO 2 -bpdc (Figure 1b) and hybrid material Eu(tta) 3 bpdc-SiO 2 @mTiO 2 (Figure 1c), indicating that the carboxylic groups of H 2 bpdc in SiO 2 @mTiO 2 -bpdc and Eu(tta) 3 bpdc-SiO 2 @mTiO 2 were completely deprotonated. Meanwhile, the ν asym (COO − ) and ν sym (COO − ) stretching vibration of carboxylate appear at 1554 and 1380 cm −1 and the difference (∆ = ν asym − ν sym = 174 cm −1 ) of carboxylate stretching frequencies can be used to identify the bonding mode, further indicating that carboxylate groups form bidentate mode with the titania in SiO 2 @mTiO 2 nanospheres [34][35][36][37][38]. In addition, the position of stretching vibration of C=N of H 2 bpdc ligand (1611 cm −1 ) in Eu(tta) 3 bpdc-SiO 2 @mTiO 2 has shifted compared with that in SiO 2 @mTiO 2 -bpdc (1598 cm −1 ), indicating that a possible coordination bond of Eu-N may be formed in hybrid material Eu(tta) 3 bpdc-SiO 2 @mTiO 2 .…”

Section: Ft-ir Spectramentioning

confidence: 99%

Europium(III) Complex-Functionalized SiO2@mTiO2 Nanospheres for Al3+-Modulated Multicolor Emission

Bai

et al. 2021

Nanomaterials

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A europium(III) hybrid material Eu(tta)3bpdc-SiO2@mTiO2 (Htta = 2-thenoyltrifluoroacetone, H2bpdc = 2,2′-bipyridine-3,3′-dicarboxylic acid) was successfully designed and synthesized by the covalent grafting complex Eu(tta)3bpdc to SiO2@mTiO2 core–shell nanosphere. The FT-IR, PXRD, XPS, TEM, HRTEM, SAED, TGA and PL were performed to characterize these materials. The results indicate that core–shell nanosphere structure and anatase crystallites of SiO2@mTiO2 are retained well after grafting the europium complex. Hybrid material Eu(tta)3bpdc-SiO2@mTiO2 displays uniform nanosphere structure, bright red color and long lifetime, which can serve as a multicolor emission material modulated by using Al3+ ions via the cation exchange approach under a single-wavelength excitation. To the best of our knowledge, this work is the first multicolor emissive sensor for Al3+ ions based on the lanthanide hybrid material.

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“…Therefore, their practical applications are limited to a great extent. To overcome these shortcomings, a variety of hybrid materials like Au/Ag nanoparticles, graphene, carbon quantum dots, and silica/titanium networks were explored and developed for obtaining excellent lanthanide luminescent materials. − Polymers with easy processability as host matrices can provide the most common and reliable way to immobilize lanthanide luminescent compounds. This treatment is easy processable to prepare luminescent thin films, gels, and nanoscale entities.…”

Section: Introductionmentioning

confidence: 99%

Electrospinning Fabrication of Europium-Chain@polymer Nanofiber Films for Visual Detection of the Fe³⁺ Ion

Bai

Yan

et al. 2021

ACS Appl. Polym. Mater.

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A ternary europium(III) coordination polymer, namely, [Eu(ctpy)(tta)2] n (1) (Hctpy = 4′-carboxy-2,2′:6′,2″-terpyridine and Htta = 2-thenoyltrifluoroacetone), was obtained and exhibits a 1D chain structure. 1-Eu emits intense red light, which can act as a luminescent dopant to be immobilized into polymers to prepare nanofiber films by an electrospinning technique. Subsequently, ternary europium-chain@polymer nanofiber films (1-Eu@PAN and 1-Eu@PMMA, PAN = polyacrylonitrile, PMMA = poly(methyl methacrylate)) as functional films have been successfully fabricated. These nanofiber films possess excellent mechanical strength and photo-/thermal stability, as well as emit luminous red light. The luminescent investigation indicates that the maximum intensity of the 5D0 → 7F2 transition of EuIII ion occurs in 1-Eu@PAN and 1-Eu@PMMA nanofiber films with 10 wt % 1-Eu loading. In addition, 10% 1-Eu@PAN nanofiber film can be used as a recyclable sensor for detecting Fe3+ ion in aqueous solution because 10% 1-Eu@PAN nanofiber film have good recyclability and selectivity. Electrospinning technique is an effective strategy to fabricate lanthanide coordination polymer-encapsulated polymer fiber films and to contribute to develop sensors.

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New highly luminescent europium(Ⅲ) complex covalently bonded with titania-based host via using a terpyridine carboxylate derivative linker for fluorescence sensing

Cited by 12 publications

References 47 publications

Multiterpyridyl Ligand/Cadmium(II) Coordination Polymer Nanosheets for Recoverable Luminescent Sensors

Multiterpyridyl Ligand/Cadmium(II) Coordination Polymer Nanosheets for Recoverable Luminescent Sensors

Europium(III) Complex-Functionalized SiO2@mTiO2 Nanospheres for Al3+-Modulated Multicolor Emission

Electrospinning Fabrication of Europium-Chain@polymer Nanofiber Films for Visual Detection of the Fe³⁺ Ion

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New highly luminescent europium(Ⅲ) complex covalently bonded with titania-based host via using a terpyridine carboxylate derivative linker for fluorescence sensing

Cited by 12 publications

References 47 publications

Multiterpyridyl Ligand/Cadmium(II) Coordination Polymer Nanosheets for Recoverable Luminescent Sensors

Multiterpyridyl Ligand/Cadmium(II) Coordination Polymer Nanosheets for Recoverable Luminescent Sensors

Europium(III) Complex-Functionalized SiO2@mTiO2 Nanospheres for Al3+-Modulated Multicolor Emission

Electrospinning Fabrication of Europium-Chain@polymer Nanofiber Films for Visual Detection of the Fe3+ Ion

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Electrospinning Fabrication of Europium-Chain@polymer Nanofiber Films for Visual Detection of the Fe³⁺ Ion