Luminescent polymethacrylate composite nanofibers containing a benzoic acid rare earth complex: Morphology and luminescence properties

Zhao, Fulai; Xi, Peng; Xia, Haiying; Gao, Li; Cheng, Bowen

doi:10.1016/j.jallcom.2015.04.066

Cited by 18 publications

(6 citation statements)

References 27 publications

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“…In the FT-IR spectra of PNPLF, the characterization peak of CO for net PET is shifted to 1716 cm –1 . The result verifies that the Tb 3+ ions of PATC have coordinated with ester groups of PET molecules (Figure b). − This kind of interaction makes the structure of the PATC more stable, and the thermal properties are significantly improved, and this result has been proven by TGA curves of PNF, PNLF, and PNPLF. Meanwhile, it can also be found that in Figure , the PATC (1%) uniformly distribute in the PNLF, and there was no agglomeration of PATC owing to this interaction.…”

Section: Resultssupporting

confidence: 57%

Morphologies and Properties of PET Nano Porous Luminescence Fiber: Oil Absorption and Fluorescence-Indicating Functions

Shu

et al. 2018

ACS Appl. Mater. Interfaces

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A polyethylene terephthalate nano porous luminescence fiber (PNPLF) was prepared through electrospun technology. The SEM and TEM images show that the surfaces of the fibers are covered with pores. The diameter of the fiber is 250-500 nm, and the diameter of the pores is 20-180 nm. The water and oil contact angles of PNPLF are 135° and 27°, respectively. The oil absorption value of the as-prepared PNPLF achieves 135 g/g and has a good oil absorption function. The as-prepared PNPLF has good luminescence properties and fluorescent-indicating function. Even trace amounts of oil can also cause obvious change of fluorescence intensity of PNPLF which has a good stability from 20 °C to 70 °C. The breaking stress of yarn of PNPLF reaches 117cN. Furthermore, the good mechanical properties and thermal properties of PNPLF provide important basic conditions for their wide applications.

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Section: Resultssupporting

confidence: 57%

Morphologies and Properties of PET Nano Porous Luminescence Fiber: Oil Absorption and Fluorescence-Indicating Functions

Shu

et al. 2018

ACS Appl. Mater. Interfaces

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“…Meanwhile, the strong peak at 543 nm suggested that PEEK 6 -Tb 1 film could emit green fluorescence. 30–32 And other characteristic peaks in the spectra were corresponding to the radiative transition of Eu 3+ ions, which were the transition processes of electrons in 4f orbit from excited state S 1 to ground state S 0 . Compared with PEEK-Eu 1 , the position of these characteristic emission peaks for PEEK 6 -Eu x -Tb 1-x films didn’t change.…”

Section: Resultsmentioning

confidence: 99%

Flexible and color-tunable poly(ether ether ketone) co-coordinated with Eu(III) and Tb(III) fluorescent films: Thermal stability and luminescence property

Wei

Huang

Song

et al. 2021

High Performance Polymers

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In this work, a novel kind of carboxyl-containing poly(ether ether ketone) (PEEK-COOH) was successfully synthesized and carefully characterized. Based on PEEK-COOH as macromolecular ligands, a series of luminescent rare earth polymer complexes (PEEKn-Eux-Tb1-x) were prepared and made into flexible films. The effects of the ratio of carboxyl ligand to rare earth ions on fluorescence intensity of complexes were studied and discussed. When the molar ratio was 6:1, the fluorescence emission intensity reached a maximum. Furthermore, the relative emission intensity of Tb3+ and Eu3+ binary system depended on their ratio and the intensity of fluorescence emission peak exhibited continuous change. Because of this, the color of the prepared fluorescent films could range from bright green to fire red, and each color has high purity. The fluorescence lifetime of complexes ranged from 0.428 to 0.511 ms. Absolute quantum yield of PEEK-Eu0.4-Tb0.6 was 8.4%. Beside this, these fluorescence films exhibited a high thermal stability with 5 wt. % in the range of 240–250°C, and its tensile strength was about 28 MPa. In addition, PEEKn-Eux-Tb1-x films possessed good optical transparency. All the interesting results suggested the potential application of the luminescent rare earth polymer complexes in display devices and photo-electronic devices.

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“…Among them, a few physical cross-links formed among the PAN molecules due to the coordination of the PAN and the Tb-complex, which plays a pivotal role in the heat resistance of the PAN-based composite nanofibers. Further, given that the operating temperature of LEDs is less than 150 °C, the macromolecular polymer-based Tb-complex nanofibers with good thermal stability are sufficient for the manufacture of LEDs 59,60 .…”

Section: Resultsmentioning

confidence: 99%

Fluctuation of photon-releasing with ligand coordination in polyacrylonitrile-based electrospun nanofibers

Shen

et al. 2020

Sci Rep

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Multivariate terbium-complexes were incorporated into polyacrylonitrile (pAn) and electrospun into flexible multifunctional nanofibers with a uniform diameter of ~200 nm. Fluorescence comparison in multi-ligand-binding nanofibers under ultraviolet (UV) radiation verifies that the differentiated β-diketone ligands with dual functions are the primary cause of the spectral fluctuation, adequately illustrating the available methods for the quantification of intermolecular reciprocities between organic ligands and central tb 3+ ions. Especially under 308 nm UVB-LED pumping, the total emission spectral power of supramolecular Tb-complexes/PAN nanofibers are identified to be 2.88 µW and the total emission photon number reaches to 7.94 × 10 12 cps which are nearly six times higher than those of the binary complex ones in the visible region, respectively. By modifying the sorts of organic ligands, the luminous flux and luminous efficacy of multi-ligand Tb-complexes/PAN nanofibers are up to 1553.42 μlm and 13.72 mlm/W, respectively. Efficient photon-releasing and intense green-emission demonstrate that the polymer-capped multi-component terbium-complexes fibers have potential prospects for making designable flexible optoelectronic devices. Growing interest is being devoted to exploring novel luminescent materials with assembling one-dimensional (1D) nanostructures in view of their unique properties and intriguing applications in light-emitting devices and color display 1-4. Particularly, more remarks in challenge of 1D organic-inorganic composites lie in integrating the flexibility and processability of the organic materials into the thermal stability and chemical resistance of the inorganic materials 5-8. So far, electrospinning is considered as a relatively straightforward method for producing 1D luminescent nanomaterials with high porosity, favorable flexibility and large surface, such as nanofibers, nanowires, nanotubes, nanorods, nanobelts and so forth 9-13. The electrospun setup for fabricating the nanofibers is shown in Fig. 1. In comparison to other nanofibers, the ordered 1D fluorescent electrospun nanofibers with excellent photon-releasing efficiency, high surface-to-volume ratio and outstanding organic-inorganic advantages are hopeful serving in the fields of electrical, electrochemical, biomedical and environmental 14-18. Considering that rare earth (RE) complexes have sharp and strong emission lines under ultraviolet (UV) irradiation through effective intramolecular energy transfer from the coordinated ligands to the RE-ions, the affinity can be improved by selecting or synthesizing organic groups 19-22. Among the trivalent lanthanide compounds with visible light emission, the investigations are mainly focused on the europium and terbium complexes which possess long-lived intense red and green luminescence with high quantum efficiency 23-26. In addition, as a result of the absent dense energy level, the probability of non-radiative transition is greatly reduced between the triplet and ground states of ligands,...

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Luminescent polymethacrylate composite nanofibers containing a benzoic acid rare earth complex: Morphology and luminescence properties

Cited by 18 publications

References 27 publications

Morphologies and Properties of PET Nano Porous Luminescence Fiber: Oil Absorption and Fluorescence-Indicating Functions

Morphologies and Properties of PET Nano Porous Luminescence Fiber: Oil Absorption and Fluorescence-Indicating Functions

Flexible and color-tunable poly(ether ether ketone) co-coordinated with Eu(III) and Tb(III) fluorescent films: Thermal stability and luminescence property

Fluctuation of photon-releasing with ligand coordination in polyacrylonitrile-based electrospun nanofibers

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