Advanced Optical Materials
·
2025
·
IF 7.2
Xiaolong Dong,Xin Zhao,Lifan Shen,Maosen Hu,Edwin Yue Bun Pun,Hai Lin
The construction of perovskite-based luminescent systems for multifunctional integrated platforms via reciprocal energy transfer (ET) cascades emerges as a central focus, but the material design and photophysical control remain a significant challenge. Herein, a strong power-dependent quantum yield behavior is observed in Cs 2 NaInCl 6 : Ho 3+ -Yb 3+ (CNIC: Ho-Yb) phosphors with ultra-low phonon energy, and quantified multiphoton upconversion (UC) efficiencies exhibit ultra-linear enhancement with the increasing excitation power, ensuring practical applicability for UC-based temperature sensing. Moreover, an efficient quantum cutting process is unveiled in the CNIC: Ho-Yb, where a single high-energy photon of Ho 3+ is converted into multiple NIR emissions of Yb 3+ via energy redistribution under 453 nm laser excitation, offering significant potential for enhancing near-infrared (NIR) imaging capability in biological tissues. To address the inherent structural and functional limitations of powder-based materials, the CNIC: Ho-Yb/polyacrylonitrile (CNIC: Ho-Yb/PAN) nanofibers are synthesized by electrospinning, and the functional integration platform based on the efficient bidirectional ET is built by coupling 453 and 980 nm lasers to enable selective applications in flexible thermal monitoring and NIR bioimaging. These findings enable next-generation flexible thermometry platforms with higher sensitivity, signal fidelity, and device-level applicability, while also paving the way for non-invasive and high-contrast deep-tissue imaging in biomedical diagnostics.
研究领域:
材料科学
·
光学物理
·
纳米技术
·
生物医学工程
·
发光
·
能量传递
·
传感器
·
生物成像
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2018
·Vol. 6
·期 37
·10101-10105
·
IF 5.976
Xiangtong Zhang,Yu Zhang,Xiaoyu Zhang,Wenxu Yin,Yu Wang,Hua Wang,Min Lu,Zhiyang Li,Zhiyong Gu,William W. Yu
Lead halide perovskite nanocrystals (NCs) exhibit excellent tunable emissions covering the entire visible spectral region, but they do not emit near-infrared (NIR) light. We synthesized rare earth element doped CsPbCl3 NCs for NIR emission. The Yb3+ doped CsPbCl3 NCs emitted strong 986 nm NIR light; the Yb3+/Er3+ co-doped CsPbCl3 NCs emitted at 1533 nm. The total photoluminescence quantum yield (PL QY) of the CsPbCl3 NCs changed from 5.0% to 127.8% upon incorporating 2.0% Yb3+, a factor of 25.6 times enhancement. The material's stability was tested under continuous ultraviolet (365 nm) irradiation. The doped CsPbCl3 NCs exhibited a better stability than the undoped one. The PL intensity of the undoped CsPbCl3 NCs dropped to 20% of the initial value in 27 h, while the doped one took 85 h.
研究领域:
材料科学
·
纳米技术
·
光电子学
·
光子学
✓ 已验证
DOI
高影响因子
ACS Applied Nano Materials
·
2022
·
IF 6.14
Mingzhou Meng,Tianmei Zhang,Jiaoyu Wang,Zhenlong Cheng,Yuanli Liu,Xin Qiao,Jian Wen,Ute Resch-Genger,Wen Long,Jun Ou
The core–shell NaYF4:Yb3+/Tm3+@NaYF4:Yb3+ upconversion nanoparticles were successfully prepared by a solvothermal method, and a layer of mesoporous silica (mSiO2) was successfully coated on the periphery of the core–shell nanoparticles to transform their surface from lipophilic to hydrophilic, further expanding their applications in biological tissues. The physical phase, morphology, structure, and fluorescence properties were characterized by X-ray diffraction (XRD), field emission transmission electron microscopy (TEM), Fourier infrared spectroscopy (FT-IR), ζ potential analysis, and fluorescence spectroscopy. It was found that the material has a hexagonal structure with good hydrophilicity and emits intense fluorescence under 980 nm pump laser excitation. The non-contact temperature sensing performance of nanoparticles was evaluated by analyzing the upconversion fluorescence of Tm3+ (1G4 → 3F4 and 3F3 → 3H6) in the temperature range of 284–344 K. The absolute and relative sensitivities were found to be 0.0067 K–1 and 1.08 % K–1, respectively, with high-temperature measurement reliability and good temperature cycling performance. More importantly, its temperature measurement in phosphate-buffered saline (PBS) solution is accurate. In addition, the temperature of the cells can be increased by adjusting the laser power density and laser irradiation time. Therefore, an optical temperature sensing platform was built to realize the application of real-time monitoring of cancer cell temperature and the dual function of photothermal therapy.
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产品关联
DOI
高影响因子
Light-Science & Applications
·
2014
·Vol. 3
·期 8
·e193
·
IF 8.476
Qin Wei-Ping,Liu Zhen-Yu,Sin Chol-Nam,Wu Chang-Feng,Qin Guan-Shi,Chen Zhe,Zheng Ke-Zhi
Cooperative luminescence (CL) occurs in spectral regions in which single ions do not have energy levels. It was first observed more than 40 years ago, and all results reported so far are from a pair of ions. In this work, upconverted CL of three Yb 3+ ions was observed in the ultraviolet (UV) region under near-infrared (NIR) excitation. The UV CL intensity showed a cubic dependence on the NIR pump power, whereas the luminescence lifetime was nearly one-third the luminescence lifetime of single Yb 3+ ions. The triplet CL (TCL) has a clear spectral structure, in which most emission peaks are consistent with the self-convoluted spectra from single Yb 3+ ions. Blue shifts were observed for certain peaks, indicating complex interactions among the excited Yb 3+ ions. The probability of the TCL process versus the average distances among three Yb 3+ ions was derived via the first- and second-order corrections to the wave functions of lanthanide ions, indicating that the formation of Yb 3+ clusters containing closely spaced ions favors the occurrence of the multi-ion interaction processes. Furthermore, the cooperative sensitization of one Gd 3+ ion by four excited Yb 3+ ions (Yb 3+ -tetramer) was demonstrated experimentally, which exhibited a novel upconversion mechanism—cluster sensitization. Our results are intriguing for further exploring quantum transitions that simultaneously involve multiple ions.
研究领域:
光学材料
·
稀土发光
·
量子光学
·
纳米光子学
·
固体发光
✓ 已验证
DOI
高影响因子
Small
·
2025
·
IF 12.1
Xinran Wang,Heng Dai,Yichun Liu,Linglu Kuang,Hao Song,Zhaowei Teng,Dawei Wang,Ting Wang,Xuhui Xu
Near-infrared (NIR) luminescence has emerged as a powerful tool in biological imaging due to its nondestructive nature, high spatiotemporal resolution, and deep tissue penetration. However, traditional NIR imaging often fails to provide detailed information about hard tissues such as bones. In this study, an approach for simultaneous imaging of soft and hard tissues using Lu 1.5 Mg 1.5 Al 3.5 Si 1.5 O 12 : Yb 3+ as an NIR scintillator is presented. Under X-ray irradiation, Lu 1.5 Mg 1.5 Al 3.5 Si 1.5 O 12 : Yb 3+ scintillator emits NIR emission with a peak at 970 nm with thermal quenching resistance, which is strongly absorbed by soft tissues, enabling soft tissue imaging. Additionally, the scintillator provides a high signal-to-noise ratio for X-ray imaging, allowing for high-resolution imaging of hard tissues, unaffected by ambient light, with a spatial resolution of up to 203 µm. By leveraging X-ray as the sole excitation source, this method provides a comprehensive view of internal biological structures, including vascular and skeletal tissues, with high resolution and minimal interference. This innovation holds great promise for advancing medical imaging technologies and enhancing diagnostic capabilities.
研究领域:
医学影像学
·
生物物理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MATERIALS RESEARCH BULLETIN
·
2015
·
IF 2.288
J.L. Wang,E.H. Song,M. Wu,W.B. Dai,S. Ye,Q.Y. Zhang
Selectively enhanced green upconversion (UC) and near-infrared (NIR) downconversion (DC) emissions of Er 3+ by Yb 3+ -Mn 2+ dimer sensitizing have been demonstrated in Er 3+ /Yb 3+ /Mn 2+ tri-doped spinel MgGa 2 O 4 upon excitation of 980 nm laser diode (LD). By optimizing the doping rate of Mn 2+ , the intensity ratio of green to red UC emission intensities of Er 3+ (G/R) could be enhanced about 10 times. Meanwhile, the 1.5 μm NIR DC emission could also be increased about 3.6 times in this system. The DC and UC emission properties, UC mechanism, as well as the enhancing mechanism have been investigated and discussed in detail. A selectively enhancing mechanism based on Yb 3+ -Mn 2+ dimer sensitizing is proposed to explain the selectively enhancing phenomena. This work could inspire the design of novel UC materials for various applications, such as temperature sensors and optical transmission, etc.
研究领域:
光学材料
·
生物医学光子学
·
无机功能材料
·
分子影像
·
转化医学
✓ 已验证
DOI
高影响因子
PHYSICA B-CONDENSED MATTER
·
2021
·
IF 2.436
Yang Yu,Sai Xu,Muhan Jiang,Ruixin Song,Jie Li,Yuefeng Gao,Xizhen Zhang,Xiangping Li,Hongquan Yu,Baojiu Chen
Upconversion core-shell nanoparticles with dual-function of temperature sensing and photothermal conversion are preferable in diagnose and treatment of cancer. Herein, NaYF 4 :Tm 3+ /Yb 3+ @NaYF 4 :Sm 3+ /Yb 3+ upconversion nanoparticles have been synthesized by a high-temperature thermal decomposition method. XRD and TEM are used to characterize the crystal structure and morphology of the samples. Temperature dependent upconversion spectra are measured under excitation of 980 nm within the scope of 303–498 K. The investigation on temperature sensing properties are on the basis of the luminescence intensity ratio of Tm 3+ . The designed core shell nanoparticles and bare core nanoparticles both have good temperature sensing performances, and the sensing properties of both are similar. Furthermore, the photothermal conversion performances are investigated ground on the power dependent temperature measurement, ethanol evaporation experiment and visual infrared thermal images. It is found that the photothermal conversion ability of the core-shell UCNPs is greatly improved by coating of the NaYF 4 : Sm 3+ /Yb 3+ outer shell.
✓ 已验证
产品关联
DOI
高影响因子
Scientific Reports
·
2024
·Vol. 14
·期 1
·1-9
·
IF 3.8
Liu Yongtao,Duan Bin,Zhou Lin,Wu Yuxiang,Wang Fengyi,Ding Changchun,Hu Junshan
Here, this study reports single-band red upconversion emission in β-Ba 2 ScAlO 5 : Yb 3+ /Er 3+ phosphor by doping Mn 2+ . The optimum concentration of Mn 2+ ions in β-Ba 2 ScAlO 5 : Yb 3+ /Er 3+ phosphor was 0.20. The intensity of red and green emissions is increased by 27.4 and 19.3 times, respectively. Compared with the samples without Mn 2+ ions, the red-green integral strength ratio of β-Ba 2 ScAlO 5 : Yb 3+ /Er 3+ /Mn 2+ sample was significantly increased by 28.4 times, reaching 110.9. The UCL mechanism was explored by analyzing the down-conversion luminescence spectra, absorption spectra, UCL spectra, and upconversion fluorescence lifetime decay curves of Yb 3+ /Er 3+ /Mn 2+ co-doped β-Ba 2 ScAlO 5 . The enhancement of upconversion red light is achieved through energy transfer between defect bands and Er 3+ ions, as well as energy transfer between Mn 2+ ions and Er 3+ ions. In addition, the Mn 2+ doped β-Ba 2 ScAlO 5 : Yb 3+ /Er 3+ red UCL phosphors have great potential for ambient temperature sensing in the 298–523 K temperature range. The maximum sensitivity of β-Ba 2 ScAlO 5 : Yb 3+ /Er 3+ /Mn 2+ phosphor as a temperature sensor at 523 K is 0.0247 K −1 .
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry C
·
2018
·Vol. 6
·期 9
·2342-2350
·
IF 5.976
S. Ding,X. F. Yang,E. H. Song,C. L. Liang,B. Zhou,M. M. Wu,W. Z. Zhou,Q. Y. Zhang
Uniform perovskite core–shell nanocubes NaMn1−xMgxF3@NaMgF3 and NaMn1−xMgxF3:Yb3+@NaMgF3:Yb3+ have been successfully synthesized via a facile one-pot co-precipitation method at room temperature. The core–shell structures were carefully characterized by powder X-ray diffraction, transmission electron microscopy, scanning transmission electron microscopy and energy-dispersive X-ray elemental mapping. It was found that the formation mechanisms of the novel core–shell structures consist of aggregation of precursor molecules/ions, multiple nucleation, surface re-crystallization and further phase transformation. In addition, the DFT calculations further showed that Mn2+ ions tend to aggregate in NaMgF3:Mn2+, which may be one of the important intrinsic factors for the formation of the unique NaMn1−xMgxF3@NaMgF3 structure in this case. Besides, the unique core–shell structures NaMn1−xMgxF3:Yb3+@NaMgF3:Yb3+ can obviously enhance the near-infrared upconversion luminescence of Mn2+, which may find high potential in multiple high-resolution imaging applications.
研究领域:
材料科学
·
纳米技术
·
发光材料
·
无机化学
✓ 已验证
DOI
高影响因子
OPTICAL MATERIALS
·
2019
·
IF 2.687
Huazhen Liao,Song Ye,Yanling Shi,Deping Wang
Small size optical-magnetic bifunctional upconversion nanoparticles (UCNPs) that can be effectively triggered by 808 nm exhibit distinct advantages of improved tissue penetrating depth, minimized overheating effect, possible for multimodal imaging and high clearance rate, which therefore are considered as desirable candidates for bioapplications. In this research, the 808 nm triggered sub-20 nm β-NaYF 4 :Yb 3+ /Er 3+ @NaGdF 4 :Yb 3+ /Nd 3+ @NaGdF 4 active-core@active-shell@inert-shell structured UCNPs with optical and magnetic bifunctional properties were developed by seed-mediated growth method with NaOA as sodium source instead of the generally used NaOH. Through optimizing Nd 3+ doping concentration and outermost NaGdF 4 inert-shell thickness, the optical-magnetic bifunctional core-shell-shell structured UCNPs exhibited strong UC emission intensity and improved magnetic property . Furthermore, the core-shell-shell NPs were validated to be no cytotoxicity by cell viability assessment. Therefore, this research may open a general avenue for the synthesis of small size multifunctional UCNPs for practical bioapplications without overheating.
研究领域:
纳米材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
Small Science
·
2025
·
IF 8.3
Tianchi Wang,Jiabo Sun,Zhaowei Teng,Shuyi Yao,Junheng Yuan,Lulu Han,Dedan Mu,Hao Song,Xue Yu,Xuhui Xu
Bioimaging with remarkable noninvasive nature, ultrahigh resolution and sensitivity allows detection of pathologies of bones, organs, and tissues. Nevertheless, the achievement of more complete information in vivo is challenged by the necessity of multiple photodetectors with diverse response ranges. Herein, a multifunctional bioimaging with Cs 2 AgInCl 6 :Yb 3+ perovskites via a single InGaAs detector for superior tissue presentation is realized in this work. Co-incorporation of foreign dopant contributes to alterations of local structural symmetry of the Cs 2 AgInCl 6 host, disruption of parity-forbidden transitions, and reduction in electron–phonon coupling strength, thereby boosting the near-infrared (NIR) intensity by 40-fold of the corresponding perovskites drastically. Moreover, an X-ray excited NIR light output is 2.83 times that of commercial Bi 4 Ge 3 O 12 scintillators. Thanks to the efficient NIR emission, the versatile perovskites film endows a multifunctional bioimaging with detailed information of biological tissue in vivo, which fundamentally offers viable avenues for promoting bioimaging technology with integrated access of tissue presentation.
研究领域:
材料科学
·
生物医学工程
·
医学影像学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF LUMINESCENCE
·
2018
·
IF 2.732
Siqi Fan,Xu Yao,Jingfang Li,Weizuo Li,Guangming Li
In view of the potential application of NIR luminescence in biology, a series of four new 3,5-Heptanedione (β-diketonate) ytterbium complexes, e.g. [Yb(L) 3 (H 2 O) 2 ] ( 1 ), [Yb(L) 3 (2,2′-bpy)] ( 2 ), [Yb(L) 3 (dpq)] ( 3 ) and [Yb(L) 3 (dppz)] ( 4 ) have been designed and isolated. Crystal structures analysis show that all complexes 1 – 4 exhibit the similar mononuclear structure, in which the central Yb 3+ ion is eight-coordinated forming the square-anti-prismatic geometry. NIR luminescence of all complexes 1 – 4 shows strong characteristic emission of Yb 3+ ions. To improve the mechanical and thermal stability, complex 1 was further doped into poly-(methyl methacrylate) (PMMA) for preparing a thin film ( 1 @PMMA). Their thermal stability and NIR luminescence were essentially enhanced in contrast to that for complex 1 . This NIR luminescent thin film may be of potential applications in biological dictation and luminescent probe.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
DOI
高影响因子
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