Lanthanides-based multifunctional luminescent films for ratiometric humidity sensing, information storage, and colored coating

Xia, Diandong; Li, Jingfang; Li, Weizuo; Jiang, Lijun; Li, Guangming

doi:10.1016/j.jlumin.2020.117784

Cited by 21 publications

(14 citation statements)

References 73 publications

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“…The high resolution C1s band in Eu-Cdots ( Figure 2 f) can be deconvoluted in four peaks, with binding energies at: 285.0 eV due to C=C/C-C; 286.6 eV due to hydroxyl (C-OH) and epoxy (C-O-C); 288.6 eV attributed to carboxylate (COO − ) and the peak at 289.7 eV due to carbon in a more electronegative chemical environment, such as in the carbonate ion (CO 3 2− ) [ 38 , 39 ]. Many of these carboxylates and carbonates are likely to be coordinated with Eu 3+ .…”

Section: Resultsmentioning

confidence: 99%

A Fluorescent Nanosensor for Silver (Ag+) and Mercury (Hg2+) Ions Using Eu (III)-Doped Carbon Dots

2022

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Carbon dots doped with Eu3+ ions (Eu-Cdots) were prepared by a hydrothermal treatment, using citric acid and urea as precursors and Eu (NO3)3 as a europium source. The Eu3+ ions are strongly coordinated with the carboxylate groups at the surface of the Cdots and incorporated within the nanographene network in the carbon core. Vibrational spectroscopy provides evidence of such interaction with identification of bands assigned to the stretching of the Eu-O bond. Eu3+ doped Cdots have larger diameters then undoped Cdots, but they are divided into smaller domains of sp2 carbon. The UV-vis excitation spectrum provides evidence of energy transfer from the Cdots to the Eu3+. The luminescence spectrum shows the characteristic sharp peaks of Eu3+ in the red part of the visible spectrum and a broad emission of Cdots centered at 450 nm. The luminescence of the Cdots is strongly quenched by Hg2+ and Ag+, but not by other cations. The quenching mechanism differs significantly depending on the nature of the ion. Both the blue emission of Cdots and the red emission of Eu3+ are quenched in the presence of Hg2+ while only the emission of the Cdots is affected by the presence of Ag+. A ratiometric sensor can be built using the ratio of luminescence intensities of the Cdots to the Eu3+ peaks.

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Section: Resultsmentioning

confidence: 99%

A Fluorescent Nanosensor for Silver (Ag+) and Mercury (Hg2+) Ions Using Eu (III)-Doped Carbon Dots

2022

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“…As shown in Figure , XPS analysis presents the O 1s bands of 1 -Eu, 20% 1 -Eu@PAN, and 20% 1 -Eu@PMMA nanofiber films. Noticeably, the signals of O 1s bands in 20% 1 -Eu@PAN and 20% 1 -Eu@PMMA nanofiber films have a slight shift (0.4 and 0.6 eV) after 1 -Eu was immobilized in polymer matrices, indicating the existence of interactions between oxygen and the Eu III ion. , …”

Section: Resultsmentioning

confidence: 93%

“…Noticeably, the signals of O 1s bands in 20% 1-Eu@PAN and 20% 1-Eu@PMMA nanofiber films have a slight shift (0.4 and 0.6 eV) after 1-Eu was immobilized in polymer matrices, indicating the existence of interactions between oxygen and the Eu III ion. 33,34 3.4. PXRD and Thermogravimetric Analysis.…”

Section: Resultsmentioning

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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“…Preparation of EuW 10 -Based Films. The films were prepared by simple solutioncasting method 43 as described in Scheme 1, and the contents of each composition were shown in Tables S1 and S2. Moreover, the films with various thickness can be acquired by regulating the volume of casting solutions.…”

Section: Methodsmentioning

confidence: 99%

Lanthanide Polyoxometalate Based Water-Jet Film with Reversible Luminescent Switching for Rewritable Security Printing

Jiang

Xia

et al. 2021

ACS Appl. Mater. Interfaces

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Luminescent security printing is of particular importance in the information era. However, the use of conventional paper still carries a lot of economic and environmental issues. Therefore, developing new environmentally friendly security printing material with a low cost is imperative. To achieve the aforementioned goals, novel lanthanide polyoxometalate doped gelatin/glycerol films with high transparency, high strength, and good flexibility have been developed via a solution-casting method. The electrostatic interaction between zwitterionic gelatin and polyoxometalate was confirmed by attenuated total reflection Fourier transform infrared spectroscopy. Luminescent spectra and digital images indicated that the films exhibited reversible luminescent switching properties through association and dissociation of hydrogen bonds between glycerol and water molecules, allowing its potential application as water-jet rewritable paper for luminescent security printing. Furthermore, the printed information can be conveniently "erased" by heating, and the film can be reused for printing. The film exhibited excellent ability to be both rewritten and re-erased. A QR code pattern and hybrid printing were employed to improve the security of information. In addition, the rewritable films possessed excellent regeneration ability and low toxicity, as well as good stability against UV irradiation and organic solvents. The water-jet rewritable film based on lanthanide polyoxometalate for luminescent security printing, to the best of our knowledge, has not yet been reported up to date. This work provides an attractive alternative strategy on fabricating rewritable films for luminescent security printing in terms of cutting down the cost, simplifying the preparation process, and protecting the environment.

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Lanthanides-based multifunctional luminescent films for ratiometric humidity sensing, information storage, and colored coating

Cited by 21 publications

References 73 publications

A Fluorescent Nanosensor for Silver (Ag+) and Mercury (Hg2+) Ions Using Eu (III)-Doped Carbon Dots

A Fluorescent Nanosensor for Silver (Ag+) and Mercury (Hg2+) Ions Using Eu (III)-Doped Carbon Dots

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

Lanthanide Polyoxometalate Based Water-Jet Film with Reversible Luminescent Switching for Rewritable Security Printing

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Lanthanides-based multifunctional luminescent films for ratiometric humidity sensing, information storage, and colored coating

Cited by 21 publications

References 73 publications

A Fluorescent Nanosensor for Silver (Ag+) and Mercury (Hg2+) Ions Using Eu (III)-Doped Carbon Dots

A Fluorescent Nanosensor for Silver (Ag+) and Mercury (Hg2+) Ions Using Eu (III)-Doped Carbon Dots

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

Lanthanide Polyoxometalate Based Water-Jet Film with Reversible Luminescent Switching for Rewritable Security Printing

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