DALTON TRANSACTIONS
·
2019
·Vol. 48
·期 22
·7910-7917
·
IF 4.052
Xue-Ying Wu,Qi Zhao,Dong-Xue Zhang,Ya-Chuan Liang,Kui-Kui Zhang,Qian Liu,Lin Dong,Chong-Xin Shan
Luminescent hybrid materials based on nanodiamonds (NDs) and rare earth ions have been successfully synthesized by covalently modifying NDs with pyromellitic acid (PMA) which is capable of coordinating to Eu3+ and Tb3+ ions. With NDs acting as a host matrix, the PMA and rare earth ions serve as an organic sensitizer and activator, respectively, yielding a highly bright hybrid composite. Interestingly, for the co-doped hybrid composites ND-PMA-Eu/Tb, the intensity ratio of the two emissions, 5D4 → 7F5 transition (Tb3+) to 5D0 → 7F2 transition (Eu3+), is linearly related to temperature in the range from 77 K to 277 K. Therefore, the hybrid could be developed as a self-calibrated ratiometric luminescent thermometer due to its temperature-dependent luminescence performance.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INORGANIC CHEMISTRY
·
2019
·
IF 4.85
Xiao Zhou,Hongwei Wang,Sha Jiang,Guotao Xiang,Xiao Tang,Xiaobing Luo,Li Li,Xianju Zhou
A series of lanthanide organic complexes, namely, [Ln2PDC3(H2O)3]H2O (Ln = Eu, Tb, EuxTb2–x, H2PDC: pyridine-3,5-dicarboxylic acid), were synthesized via hydrothermal method. Eu-PDC was characterized by single-crystal X-ray diffraction. The powder X-ray diffraction, Fourier transform infrared spectra, and thermogravimetric analysis illustrate that Eu-PDC, Tb-PDC, and EuxTb2–x-PDC complexes are isostructural. All the complexes exhibit strong emission even though water molecules coordinated in the structure. Tunable emission color from green, yellow to red is realized by adjusting the Eu/Tb ratio in mixed EuxTb2–x-PDC complexes. Energy transfer from Tb3+ to Eu3+ is discussed in detail via fluorescence decay and time resolution spectra. The detailed energy transfer process sees that the emitting color of Eu0.15Tb1.85-PDC shifts from green to orange in a time interval of 153–790 μs. In addition, temperature-dependent emission of the Eu0.05Tb1.95-PDC complex indicates that it is a potential solid state material for a luminescence thermometer in the range of 293–333 K. The temperature resolution is less than 0.16 K. The optical properties of the EuTb-PDC complex indicate that it is a multifunctional luminescent material with promising applications in temperature sensing, time resolution imaging, lighting, and displaying.
研究领域:
无机化学
·
材料科学
·
光学
✓ 已验证
DOI
PubMed
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2024
·
IF 4.3
Zitao Yan,Tianyang Zhao,Xiaokang He,Yong Pu,Dachuan Zhu
A series of bimetallic-organic frameworks (Eu 1-x Tb x -BTC) have been prepared via solvothermal method by using 1,3,5-benzenetricarboxylic acid as organic ligand, and confirmed by XRD patterns and FT-IR spectra. As x climbs up, the morphology of Eu 1-x Tb x -BTC evolves from micro-sticks gradually to microspheres with the diameter about 2–3 μm, among which Eu 0.1 Tb 0.9 -BTC displays the best luminescence performance under the excitation at 295 nm. Both the emission peaks located at 618 nm and 547 nm are rising with test temperature increasing instead of intrinsic thermal quenching. The fluorescence intensity ratio Δ of Eu 0.1 Tb 0.9 -BTC demonstrates a good linear fit in range of 293 K–473 K, combined with the maximum relative sensitivity ( Sr ) of 0.135%K −1 (293 K) and the temperature resolution ( δT ) range of 0.099 K–0.123 K. Finally, the five-cycle temperature sensing test proves Eu 0.1 Tb 0.9 -BTC has a reliable cycling and thermal stability.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2015
·Vol. 26
·期 11
·8413-8420
·
IF 1.569
Tian Jiao,Ma Qianli,Dong Xiangting,Yang Ming,Yang Ying,Wang Jinxian,Yu Wensheng,Liu Guixia
The flexible color-tunable [Eu(BA) 3 phen + Tb(BA) 3 phen]/PMMA composite nanobelts have been fabricated by single axial electrospinning. Scanning electron microscopy (SEM), energy dispersive spectrometry (EDS) and fluorescence spectroscopy were used to characterize the final products. As-prepared nanobelts are almost uniform and the thickness and width of them are respectively ca. 890 nm and 16.6 ± 0.09 μm. The fluorescence intensity of Eu 3+ is increased with adding more Eu(BA) 3 phen into the composite nanobelts, and the fluorescence intensity of Tb 3+ is found to increase monotonically with introducing more Tb(BA) 3 phen into the composite nanobelts. By adjusting the ratio of Eu(BA) 3 phen to Tb(BA) 3 phen complexes, the fluorescence color of composite nanobelts can be tuned from red to yellow, yellow green, and green under the excitation of 290-nm single-wavelength ultraviolet light. Besides, the emission color could also be tuned easily from red to yellow, yellow to green via variation of excitation wavelengths. The novel color-tunable composite nanobelts have potential applications in the fields of color displays and sensor systems.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
OPTICAL MATERIALS
·
2025
·
IF 4.2
Aihua Zhou,Chengguo Ming,Yumiao Pei,Yuanxue Cai,Tingting Guo,Hanbo Li
Reasonable modulation of temperature-dependent luminescence color has attracted significant attention due to its promising applications in anti-counterfeiting and temperature sensing. Although research on thermochromic materials is growing, the detailed exploration of the causes remain insufficiently explored. In this study, we successfully synthesized SrMoO 4 :Tb/Eu samples exhibiting thermal-responsive color tuning. Under 280 nm excitation, the intensity ratio of Eu 3+ ( 5 D 0 → 7 F 2 ) to Tb 3+ ( 5 D 4 → 7 F 5 ) in SrMoO 4 :0.08Tb/0.12Eu gradually increases from 0.81 to 5.8 over the temperature range of 303K–573K, accompanied by a distinct color shift from red to yellow. Experimental investigations demonstrated that the thermochromic behavior of the sample is primarily governed by nonradiative relaxation rates and local site symmetry. These results indicated that the samples can have potential for anti-counterfeiting and temperature sensing, particularly suitable as temperature sensing in the high-temperature reactor observation window.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF LUMINESCENCE
·
2019
·
IF 2.961
J. Zhang,Z.Y. Ma,J.G. Guo,G.M. Cai,L. Ma,X.J. Wang
Color-tunable phosphors based on a single host are superior to traditional mixed primary-color phosphors in fluorescent lamps, due to the better consistency of different color components in service. In this work, a series of Eu 3+ /Tb 3+ doped MgIn 2 P 4 O 14 phosphors were synthesized by a conventional solid state reaction method. The phosphors exhibit strong absorption around 254 nm with negligible absorption in the visible light region. Under the joint action of the co-activation, cross-relaxation, sensitization, and phonon-assistance, color-tunable reddish-orange-yellow-green-blue emission is achieved in MgIn 2 P 4 O 14 : Eu, Tb phosphors by adjusting the doping content, which demonstrates great potential for the application in fluorescent lamps.
研究领域:
材料科学
·
无机化学
·
光电子学
·
发光材料
·
固体物理
✓ 已验证
DOI
高影响因子
MATERIALS RESEARCH BULLETIN
·
2024
·
IF 5.3
C. Wang,X.Z. Zheng,L. Yue,P.J. Xia,M. Xu,W.B. Dai
The exploration of stable/efficient phosphor for n -UV chip pumped white light-emitting diodes ( w LEDs) remains an arduous task. Herein, a novel series of color tunable Eu 2+ /Tb 3+ /Sm 3+ tridoped Sc-based cyclosilicate phosphors (KBaScSi 3 O 9 : Eu 2+ /Tb 3+ /Sm 3+ ) have successfully designed and obtained via facile solid-state reaction based on comprehensive consideration of rigidly structural network of host, weak electron-phonon coupling strength and spectral adjustability of codopants via energy transfer (ET). The crystallographic occupancies of Eu, Tb and Sm primary in Ba/K, Ba and Ba sites in the monoclinic host, respectively were determined on the basis of the Rietveld refinements and crystal chemistry rules. The photoluminescence (PL) properties were systematically investigated in conjunction with structural analyses, implying that the ‘warm’ white light with excellent thermal stability is stemmed from combination of optimized blue (Eu 2+ ), green (Tb 3+ ) and red (Sm 3+ ) emissions via Eu → Tb → Sm ET strategy. Interestingly, Tb ions play both roles of green light luminescent center and ET bridge to achieve cascade ET for connecting Eu/Sm ion pairs because of the adverse metal-metal charge transfer (MMCT) effect (Eu 2+ + Sm 3+ → Eu 3+ + Sm 2+ ). Furthermore, the phosphor-converted w LEDs (pc- w LEDs), by encapsulating the optimal KBS: 4 %Eu/4 %Tb/6 %Sm with commercial n -UV LED chip, show high thermal stability with satisfactory electroluminescence (EL) performances. These results indicate the KBS: Eu/Tb/Sm phosphors are potential candidates for application in high power n -UV pumped pc- w LEDs.
研究领域:
材料科学
·
发光材料
·
固态照明
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无机化学
·
光电子学
✓ 已验证
DOI
高影响因子
Biosensors-Basel
·
2025
·Vol. 15
·期 10
·636
·
IF 5.6
Qiuping Li,Hongxia Ouyang,You Zhou,Xinghui Yang,Qi Wang,Yonghong Ding,Haichao Yu
The synthesis of lanthanide fluorescent nanoparticles and the investigation of their fluorescence sensing applications have attracted a great deal of attention in materials science over the past decades. In this study, we designed and synthesized a core–shell fluorescent nanoparticle based on dual-center emission from the europium and terbium complexes, and demonstrated its application as a ratiometric fluorescence sensor for the detection of 2,6-pyridinedicarboxylic acid (DPA). The europium complex is embedded in the inner core, providing a stable fluorescence signal at 617 nm, while the terbium complex is positioned in the outer shell and exhibits a fluorescence “Turn-ON” response at 545 nm upon interaction with DPA molecules. The fluorescence intensity ratio F545/F617exhibits a sensitive response to the DPA concentration. Experimental results demonstrate that the as-prepared SiO2@Eu@SiO2@Tb nanoparticle exhibits a linear response in the DPA concentration range of 10–100 μM, with a detection limit (LOD) of 1.38 μM and well selectivity for DPA sensing. This strategy offers new insights into the development of novel lanthanide-based ratiometric fluorescence sensors.
研究领域:
材料科学
·
分析化学
·
纳米技术
·
生物传感
·
荧光探针
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2025
·
IF 7.3
Xuezhen Feng,Gaoyuan Gu,Yabing Tian,Shibin Shang,Xujuan Huang,Jianxin Jiang,Zhanqian Song,Haibo Zhang
Fluorescent cellulosic hydrogels are suitable for information encryption and anticounterfeiting. However, their underwater application remains a major challenge due to insufficient antiswelling and mechanical properties affecting anticounterfeiting accuracy and durability. This study reports a strategy to prepare high-strength, biodegradable, and antiswelling fluorescent cellulosic hydrogels through salting-out and hydrophobic interactions. Salting-out and hydrophobic polycyclic structures (acrylpimaric acid) enhance the H-bonds, hydrophobic interactions, and coordination bonds of hydrogels, increasing the network cross-linking density. The subsequent improvement in the energy dissipation mechanisms results in a hydrogel with high compressive strength (18.52 MPa) and tensile toughness (12.16 MJ/m3). Furthermore, the enhanced network density and hydrophobic interactions provided the hydrogel with a high diffusion energy barrier, restricting the ingress and mobility of H2O and resulting in a swelling ratio (SR) of 0.04%. This hydrogel was capable of complete biodegradation in soil within 20 days. The perylene-3,4,9,10-tetracarboxylic acid (PTCA)-Eu/Tb ligands imparted fluorescence to the hydrogel; when they are combined with Python, they enable efficient information encryption and decryption underwater. Furthermore, the biodegradable fluorescent cellulosic hydrogel, prepared from inexpensive and ecofriendly raw materials (cellulose and rosin), offers a strategy for the sustainable development of underwater anticounterfeiting materials.
研究领域:
材料科学
·
高分子化学
·
环境科学
·
光学材料
·
安全技术
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2025
·
IF 5.1
Jin Liu,Boying Wang,Shuxin Li,Yao Wang,Jun Li,Yan Zhang,Christopher D. Snow,Matt J. Kipper,Soo Wohn Lee,Laurence A. Belfiore,Jianguo Tang
Advanced data storage and anti-counterfeiting technologies are critical in addressing modern information safety. In this work, novel nanocomposites of Eu3+, Tb3+, Zn2+ and -hyaluronan for down-conversion and NaGdF4:Yb,Er nanoparticles for up-conversion have been synthesized and applied for innovative anticounterfeiting luminescent inks. These inks exhibit excellent fluorescence under dual UV or NIR excitation, and sensitive quenching in response to some ions or compounds, enabling multi-level data encoding, reversible Cu2+ detection, and dynamic information concealment. Utilizing electrohydrodynamic (EHD) printing, we achieved precise patterns with line widths of approximately 20–50 μm, facilitating dynamic information concealment and secure data storage. The printed patterns, invisible under natural light, displayed distinct and bright fluorescence when stimulated by UV and NIR light, offering orthogonal readout capabilities for secure information retrieval. Additionally, the luminescent inks demonstrated remarkable sensitivity to Cu2+ ions, with fluorescence quenching efficiency reaching 85.3% at a Cu2+ concentration of 100 μg mL−1. The quenching process was reversible upon introducing ethylenediaminetetraacetic acid (EDTA), enabling up to three cycles of fluorescence recovery and suppression with minor degradation (<15%) in intensity after repeated use. The high-resolution EHD printing technology combined with excellent sensing performance, such as a detection limit of 1.2 μg mL−1 for Cu2+, enables a promising strategy for advancing intelligent information systems and hazardous ion detection. This work offers a versatile solution for secure information coding, anti-counterfeiting, and environmental sensing, providing a significant advancement in multifunctional luminescent materials, especially for smart quadruplicate information coding and hazard sensing, with dual UV/IR excitation.
研究领域:
纳米技术
·
材料科学
·
光学
·
信息安全
·
环境传感
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）