JOURNAL OF LUMINESCENCE
·
2022
·
IF 4.171
Guangmin Xie,Yuan Wang,Xinzhe Zhou,Liang He,Huanrong Li
Developing a contactless ratiometric luminescent thermometry with high sensitivity, widely available temperature range, and reliable performance is still a challenge in materials science. Herein, we adopted an in-situ formation strategy to synthesize luminescent lanthanide complexes in siloxane-polyether matrix by the reaction between 4′-(4-carboxyphenyl)- 2,2′:6′,2″- terpyridine (Hcptpy) ligand and lanthanide ions (Eu 3+ /Tb 3+ ) to realize a ratiometric luminescent thermometer. The unique energy cascade from Hcptpy → Tb 3+ → Eu 3+ in siloxane-polyether enables the luminescent films to be not only the multi-color emission, but also provide highly temperature-sensitive over the wide temperature range. The EuTb 15 @SP film for luminescent thermometry performance is fine-tuned to reach a maximum relative sensitivity of 7.26% K −1 at 397 K and shows repeated utilization without sensitivity loss. Furthermore, the multi-color emission ranging from red through yellow to green can be achieved by tuning the Eu 3+ /Tb 3+ molar ratio. Consequently, utilizing siloxane-polyether as matrix has been proven to be an effective strategy for constructing lanthanide-based hybrid films with temperature sensor properties. We believe that the reported strategies for preparing a bimetallic complex-doped siloxane-polyether hybrid film will broaden potential applications.
✓ 已验证
产品关联
DOI
高影响因子
Optoelectronics Letters
·
2020
·Vol. 16
·期 5
·355-359
·
IF 0
Bian Ming-jing,Zhang Hong-yan
In this work, we studied the effect of different pH values on morphology, band gap and photoluminescence (PL) properties of Eu 3+ /Tb 3+ co-doped ZnO prepared by coprecipitation method. Experimental results show that alkaline condition is more favorable for the doping of Eu 3+ and Tb 3+ ions which reduce the band gap and increases the PL intensity of UV emission (385 nm) and visible emission (400—600 nm) of ZnO. Gaussian deconvolution PL spectra show that the defects on the surface of ZnO are decreased when it is synthesized under alkaline conditions. Furthermore, both the intrinsic orange emission of Eu 3+ ions (611 nm) and the intrinsic green emission of the Tb 3+ ions (495 nm) of ZnO in this case are obtained at the same time. High intensity green and orange emission indicates that Eu 3+ /Tb 3+ co-doped ZnO is a promising PL material and has potential in emission devices.
✓ 已验证
产品关联
DOI
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
·
2019
·Vol. 21
·期 44
·24308-24315
·
IF 3.567
Leipeng Li,Xudong Qi,Feng Qin,Lu Li,Hong Gao,Yangdong Zheng,Zhiguo Zhang
A guideline for designing sensitive thermometry is proposed. It reveals that using two emission bands that possess the opposite change tendencies against temperature makes it easier to achieve a larger relative sensitivity. Based on the guidelines, a highly sensitive strategy for optical thermal detection that depends on the Tb3+-to-Eu3+ emission ratio is designed by exciting Eu3+/Tb3+'s unusual absorption lines. This can be easily driven by a commonly used and cheap 405 nm laser diode. Moreover, its maximum relative sensitivity reaches up to 2.02% K−1 at 610 K, one of the largest sensitivities reported so far.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
·
2013
·
IF 2.416
Bing Yan,Min Guo
Novel organic/inorganic/polymeric hybrid microspheres are constructed with rare earth complexes into polymer matrix through covalent bonds. Functional covalent polymer linkages (abbreviated as PAAR(MR)-M1(M2, M3)) are achieved from the functionalization of three 4-substituted aromatic carboxylic acid derivatives (4-aminobenzoic acid (M1), 4-mercapto benzoic acid (M2), 4-hydroxybenzoic acid (M3)) with two polymer resins ( para -alkoxy-benzyl alcohol resin (PAAR) or Merrifield resin (MR)), which are through nucleophilic substitution reaction between amino (mercapto and hydroxyl) groups of M1 (M2,M3) and methyl chloride groups of PAAR (MR). Furthermore, ternary rare earth polymeric hybrid microsphere (abbreviated as PAAR(MR)-M1-3-RE-Phen) are constructed through coordination bonds with covalent polymer linkages and 1,10-phenanthroline (Phen) as ligands. The physical characterization and particularly the photoluminescence property of them are studied in detail, which present the regular microsphere morphology and characteristic photoluminescence.
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Endian Cui,Xiangyang Yuan,Luomeng Tang,Lu Yang,Xiaoyan Yang,Xiaoling Liao,Jianfeng Tang,Yanan Zhao,Wei Sun,Kai Liu,Yingshuai Liu,Jing Liu
Incorporation of lanthanide ions (Ln 3+ ) can remarkably enhance the structural stability and optical properties of lead-free perovskite NCs. Herein, we have established the relationship between the intrinsic emission of Cs 2 AgInCl 6 host and the Ln 3+ by Eu 3+ , Tb 3+ doping in Cs 2 AgInCl 6 NCs, realizing tunable luminescence of NCs in the visible region. Experimental studies and density functional theory (DFT) calculations analysis show that Eu 3+ and Tb 3+ occupy the sites of In 3+ in Cs 2 AgInCl 6 , the defect formation energy for Cs 2 AgInCl 6 :Ln 3+ is larger than the pristine Cs 2 AgInCl 6 , resulting in a more stable cubic double perovskite structure. The optical band gap increases with the increase in Ln 3+ doping percentage. Turning excitation from 250 nm to 300 nm, the broad self-trapped excitons (STEs) emission is more remarkable, and the narrow Ln 3+ emission is less notable. The emitted color can be adjusted from white to red and to green light by altering the doping concentration of Eu 3+ or Tb 3+ and excitation wavelength. This work promotes the design and optoelectronic application of desired lead-free perovskites.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF LUMINESCENCE
·
2020
·
IF 3.28
Hui Yu,Xinan Shi,Lijian Huang,Xiaojiao Kang,Daocheng Pan
Eu 3+ /Tb 3+ -doped CaMoO 4 /SrMoO 4 luminescent thin films were deposited by a facile solution method, and were annealed over the temperature range of 350–650 °C. Luminescent thin films were characterized by means of X-ray diffraction (XRD), photoluminescence (PL), UV–vis absorption, scanning electron microscope (SEM) and energy disperse spectroscopy (EDS). In addition, the effects of alkali metal ions (Li + , Na + and K + ) on the luminescence properties of CaMoO 4 /SrMoO 4 thin films were systematically investigated. We found that the optimal chemical compositions for the luminescent molybdate thin films are Ca 0.87 MoO 4 :Eu3+ 0.10, K+ 0.03, Sr 0.82 MoO 4 :Eu3+ 0.15, K+ 0.03, Ca 0.87 MoO 4 :Tb3+ 0.03, Li+ 0.1, and Sr 0.82 MoO 4 :Tb3+ 0.15, Li+ 0.03.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2019
·
IF 4.175
Z.M. Yu,L.F. Shen,D.S. Li,E.Y.B. Pun,J. Guo,H. Lin
Tb(acac) 3 (TAH) and Eu(TTA) 3 Phen (ETP) doped polyacrylonitriles (PAN) have been electrospun into heterogeneous hybrid TAH/ETP/PAN and core-shell structured [(TAH/PAN) core + (ETP/PAN) shell ] wire-shaped flexible nanofibers with diameter of ∼350 nm. Differential photon releasing behaviors reveal the double-color-emitting potential of Tb 3+ /Eu 3+ combination systems and verify the effectiveness of coaxial configuration in avoiding the cross-relaxation between different rare earth ions. Luminous fluxes of the hybrid and the coaxial systems exceed 283.5 and 326.3 μlm under the excitation of 308 nm UVB-LED pump source, respectively. By adopting coaxial electrospun configuration, the color coordinates are tuned from (0.561, 0.332) in TAH/ETP/PAN to (0.435, 0.366) in [(TAH/PAN) core + (ETP/PAN) shell ] fibers, which demonstrates that the core-shell structure is promising to extend the dimension of color tuning. Nanofibrosis and electrospun configurations furnish a desired approach to develop multifunctional one-dimensional nanomaterials for color displays and optoelectronic sensors .
✓ 已验证
DOI
高影响因子
Polymers
·
2018
·Vol. 10
·期 10
·1099
·
IF 2.935
Qiuping Li
Ionogels refer to an emerging composite material made from the confinement of ionic liquids within some specific cross-linked network matrices. They have potential applications in areas such as electrochemical and optical-electric materials. Incorporation of lanthanide (Eu3+, Tb3+) complexes covalently functionalized multi-walled carbon nanotubes (MWCNTs) in ionogels provide new ideas to design and synthesize novel luminescent hybrid materials that have excellent characteristics of luminescence and ionic conductivity. Here, the multifunctional ionogels were synthesized by confining an ionic liquid and the rare earth functionalized MWCNTs in the cross-linked polymethyl methacrylate (PMMA) networks, resulting in a novel optical/electric multifunctional hybrid material. The SEM images and digital photographs suggest that the lanthanide functionalized MWCNTs are evenly dispersed in the hybrid matrices, thus leading to a certain transparency bulky gel. The resulting ionogels exhibit certain viscosity and flexibility, and display an intense red/green emission under UV-light irradiation. The intrinsic conductibility of the embedded ionic liquids and carbon nanotubes in conjunction with the outstanding photoluminescent properties of lanthanide complexes makes the soft hybrid gels a material with great potential and valuable application in the field of optical-electric materials.Keywords:lanthanide complex;ionic liquid;carbon nanotube;ionogel;composite materials;luminescence
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
·
2021
·
IF 3.995
Le Han,Jiaqiang Liu,Peng Liu,Bohan Li,Xianliang Li,Yan Xu
Ratiometric fluorescent sensing materials based on dual-emissive luminescent centers have been widely researched due to their highly stable self-calibrating monitoring performance. In this work, Eu 3+ , Tb 3+ co-doped gadolinium molybdate [Gd 2 (MoO 4 ) 3 ] phosphors were successfully prepared through a facile precipitation and a following heat treatment process. Dual-emissive Gd 2 (MoO 4 ) 3 : Eu 3+ , Tb 3+ phosphor showed characteristic emission peaks at 592, 617, and 703 nm corresponding to the transitions of 5 D 0 – 7 F 1 , 5 D 0 – 7 F 2 and 5 D 0 – 7 F 4 for Eu 3+ ions, and the other emissions at 488 and 543 nm were ascribed to 5 D 4 – 7 F 6 and 5 D 4 – 7 F 5 transitions for Tb 3+ , respectively. The temperature sensitivities of Gd 2 (MoO 4 ) 3 : Eu 3+ , Tb 3+ based on a multimode fluorescence intensity ratio (FIR) technique were investigated for monitoring temperature changes in the range of 80–450 K. The maximum relative sensitivities of the four modes of FIR (I Tb 3+ /I Eu 3+ ) techniques were successfully achieved with range of 0.37–0.50% K −1 . The results also demonstrated the high reversibility of Gd 2 (MoO 4 ) 3 : Eu 3+ , Tb 3+ phosphor used as a self-calibrating thermometer for thermal-sensing application.
✓ 已验证
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2023
·
IF 11.2
Jiaqi Wang,Yuanhang Li,Xiaotong Li,Jiangbo Pan,Di Wang,Shuangying Wei,Chengyu Wang,Jian Li
Biological macromolecules had been studied as ligands in recent years, which not only give the complexes excellent polymer properties, but also have many advantages such as biodegradability. Carboxymethyl chitosan (CMCh) is excellent biological macromolecular ligand because of its abundant active amino and carboxyl groups, and it can smoothly transfer energy to Ln 3+ after coordinating. To further study the energy transfer mechanism of CMCh-Ln 3+ complexes, CMCh-Eu 3+ /Tb 3+ complexes with different Eu 3+ /Tb 3+ ratios were prepared by using CMCh as a ligand. The morphology, structure, and properties of CMCh-Eu 3+ /Tb 3+ were characterized and analyzed by infrared spectroscopy, XPS, TG and Judd-Ofelt theory, thus the chemical structure of CMCh-Eu 3+ /Tb 3+ was determined. The mechanism of energy transfer was explained in detail, also the Förster resonance transfer model is confirmed, and the hypothesis of energy transfer back was verified by the characterization and calculation methods of fluorescence spectra, UV spectra, phosphorescence spectra and fluorescence lifetime. Finally, CMCh-Eu 3+ /Tb 3+ with different molar ratios were used to prepare a series of multicolor LED lamps, and it extends the application range of biological macromolecules as ligands.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry B
·
2025
·
IF 5.7
Min Zhang,Miao Qiu,Zengkun Li,Rui Xu,Yao Wang,Wei Wang,Christopher D. Snow,Matt J. Kipper,Laurence A. Belfiore,Jianguo Tang
Protein crystals have advantageous properties as framework materials, such as porosity and organized, high-density functional groups with the potential for guest specificity. Thus, protein crystal materials open up vast opportunities for fluorescent species doping and drug sensing. In this work, we explore this frontier by combining two lanthanide complexes with hen egg white lysozyme (HEWL) and directly obtaining co deposited structures in one step using an anti-solvent method different from the previous two-step method. Cross-linking of the protein was achieved using glutaraldehyde, ensuring the stability of the assembly in diverse solvent environments. The use of glutaraldehyde achieved protein cross-linking, ensuring the stability of the components in various solvent environments, including no leakage of fluorescent substances in ultrapure water and anhydrous ethanol. Differential fluorescence quenching effects of amino acids on the two doped luminescent complexes were observed. Introduction of amino acids, varying in concentration and type, resulted in distinct fluorescence enhancement or quenching effects on the protein assembly loaded with the complexes, and the detection results are reflected through different fitting equations and parameters. By exploring the application of this hybrid material for amino acid detection, this work lays the groundwork for broader applications.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2019
·
IF 2.931
Jing Ma,Bing Yan
Both Zeolite A (ZA) and two kinds of 2,2′-bipyridine-5,5′-dicarboxylic acid (H 2 bpydc) linking meta-organic frameworks (MOFs) (MOF-253 (Al(OH)(bpydc)) and UiO-67 ([Zr 6 O 4 (OH) 4 (bpydc) 6 ])) have been used to construct novel photofunctional multi-component lanthanide hybrid materials through covalent-coordination cooperative assembly. Microporous ZA is firstly functionalized by covalently grafting of the surface hydroxyl groups using special silane crosslinking reagent 3-methacryloxypropyltrimethoxysilane (MPTMS). Then the multi-component assembly are realized by coordination interaction between lanthanide ions (Eu 3+ /Tb 3+ ), ZA through the carbonyl group of MPTMS unit and MOF-253 (or UiO-67) through the double nitrogen of bpydc linker. Subsequently, the obtained multicomponent hybrid materials (ZA-MPTMS-Eu/Tb-MOF-253(UiO-67)) are characterized by means of XRD, FT-IR, SEM and especially the photoluminescence properties are studied in details. These hybrids with both ZA and MOFs host show the main characteristic crystal framework morphology of ZA together with the composition of MOFs. They display the feature luminescence of Eu 3+ /Tb 3+ ions for the energy transfer from bpydc linker of MOFs. Furthermore, ZA-MPTMS-Eu-UiO-67 hybrid material is selected to check the luminescence response to volatile substances, whose luminescence quenching is found for ammonia vapor.
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）