101
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Mi C, Zhou J, Wang F, Jin D. Thermally enhanced NIR-NIR anti-Stokes emission in rare earth doped nanocrystals. NANOSCALE 2019; 11:12547-12552. [PMID: 31237309 DOI: 10.1039/c9nr03041g] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Nanoparticles with anti-Stokes emissions have enabled many sensing applications, but their efficiencies are considerably low. The key to enable the process of anti-Stokes emissions is to create phonons that assist the excited photons to be pumped from a lower energy state onto a higher one. Increasing the temperature will generate more phonons, but it unavoidably quenches the luminescence. Here by quantifying the number of phonons being generated from the host crystal and those at the surface of Yb3+/Nd3+ co-doped nanoparticles, we systematically investigated mechanisms towards the large enhancements of the phonon-assisted anti-Stokes emissions from 980 nm to 750 nm and 803 nm. Moreover, we provided direct evidence that moisture release from the nanoparticle surface at high temperature was not the main reason. We further demonstrated that the brightness of 10 nm nanoparticles was enhanced by more than two orders of magnitude, in stark contrast to the thermal quenching effect.
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Affiliation(s)
- Chao Mi
- Institute for Biomedical Materials and Devices (IBMD), Faculty of Science, University of Technology Sydney, NSW 2007, Australia.
| | - Jiajia Zhou
- Institute for Biomedical Materials and Devices (IBMD), Faculty of Science, University of Technology Sydney, NSW 2007, Australia.
| | - Fan Wang
- Institute for Biomedical Materials and Devices (IBMD), Faculty of Science, University of Technology Sydney, NSW 2007, Australia.
| | - Dayong Jin
- Institute for Biomedical Materials and Devices (IBMD), Faculty of Science, University of Technology Sydney, NSW 2007, Australia.
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102
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Man Z, Lv Z, Xu Z, Cui H, Liao Q, Zheng L, Jin X, He Q, Fu H. Organic nanoparticles with ultrahigh stimulated emission depletion efficiency for low-power STED nanoscopy. NANOSCALE 2019; 11:12990-12996. [PMID: 31264678 DOI: 10.1039/c9nr02781e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Stimulated emission depletion (STED) nanoscopy is a powerful sub-diffraction imaging tool to probe subcellular structures and organelles. Conventional organic dyes require high STED power (PSTED) to obtain sub-diffraction resolution, leading to serious photo-bleaching. Herein, this study demonstrates highly emissive silica-coated core-shell organic nanoparticles (CSONPs) as a new type of photostable probe with ultrahigh stimulated emission depletion efficiency for low-power super-resolution STED nanoscopy. The CSONPs offer (i) efficient red emission with high solid-state fluorescence quantum yields around 0.6, (ii) large Stokes shift of 150 nm and (iii) high photostability owing to silica shell protection. The stimulated emission depletion efficiency (η) of CSONPs was extremely high up to η = 99% (the highest value reported so far) with a saturation intensity as low as Isat = 0.18 MW cm-2. Moreover, this research demonstrates the super-resolution imaging of living HeLa cells stained using CSONPs with a lateral spatial resolution of 63 nm at an extremely low depletion power of ISTED = 0.89 MW cm-2 and a long-term stability >600 s at η = 80% without obvious fatigue. The excellent and comprehensive performances of the CSONPs are promising for super-resolution imaging in biological applications.
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Affiliation(s)
- Zhongwei Man
- Beijing Key Laboratory for Optical Materials and Photonic Devices, Capital Normal University, Beijing 100048, China.
| | - Zheng Lv
- Beijing Key Laboratory for Optical Materials and Photonic Devices, Capital Normal University, Beijing 100048, China.
| | - Zhenzhen Xu
- Beijing Key Laboratory for Optical Materials and Photonic Devices, Capital Normal University, Beijing 100048, China.
| | - Hongtu Cui
- Key Laboratory of Molecular Cardiovascular Sciences of Ministry of Education, the Institute of Cardiovascular Sciences and Institute of Systems Biomedicine, Peking University Health Science Center, Beijing 100191, China.
| | - Qing Liao
- Beijing Key Laboratory for Optical Materials and Photonic Devices, Capital Normal University, Beijing 100048, China.
| | - Lemin Zheng
- Key Laboratory of Molecular Cardiovascular Sciences of Ministry of Education, the Institute of Cardiovascular Sciences and Institute of Systems Biomedicine, Peking University Health Science Center, Beijing 100191, China.
| | - Xue Jin
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Institute of Molecular Plus, Tianjin Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin 300072, China.
| | - Qihua He
- Key Laboratory of Molecular Cardiovascular Sciences of Ministry of Education, the Institute of Cardiovascular Sciences and Institute of Systems Biomedicine, Peking University Health Science Center, Beijing 100191, China.
| | - Hongbing Fu
- Beijing Key Laboratory for Optical Materials and Photonic Devices, Capital Normal University, Beijing 100048, China. and Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Institute of Molecular Plus, Tianjin Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin 300072, China.
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103
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Multifunctional biocompatible Janus nanostructures for biomedical applications. CURRENT OPINION IN BIOMEDICAL ENGINEERING 2019. [DOI: 10.1016/j.cobme.2019.04.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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104
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Wang S, Shen B, Wei HL, Liu Z, Chen Z, Zhang Y, Su Y, Zhang JZ, Wang H, Su Q. Comparative investigation of the optical spectroscopic and thermal effect in Nd 3+-doped nanoparticles. NANOSCALE 2019; 11:10220-10228. [PMID: 31089652 DOI: 10.1039/c9nr02493j] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Nd3+-doped nanoparticles involving 808 nm excitation hold great promise in various biomedical applications, such as bioimaging, biodetection, theranostics and optogenetics. Here we present the synthesis and characterization of core-multishell Nd3+-doped nanoparticles displaying excellent optical properties. We systematically studied the influence of doping concentration, nanostructure design, excitation wavelength and size effect on the upconversion luminescence of Nd3+-doped nanoparticles. Remarkably, the emission intensity of optimized nanoparticles with 808 nm excitation is three times higher than the emission intensity of those with 980 nm excitation. Surprisingly, the optical profiles of Nd3+-doped nanoparticles strongly depend on the excitation wavelengths. The dominant effect responsible for the emission intensity difference and the energy transfer mechanism upon different excitation wavelengths are investigated. Interestingly, the heavily Nd3+-doped nanoparticles not only display efficient upconversion luminescence, but also are able to convert the excitation source to heat under a single 808 nm excitation source. Importantly, these efforts will lead to Nd3+-doped nanoparticles with unprecedented optical and thermal properties that will have broad utility in fundamental research and technological applications.
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Affiliation(s)
- Shuai Wang
- Institute of Nanochemistry and Nanobiology, Shanghai University, Shanghai 200444, China.
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105
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Kotulska AM, Prorok K, Bednarkiewicz A. Spectral properties of Tm 3+ doped NaYF 4 up-converting nanoparticles under single and double photoexcitation wavelengths. Methods Appl Fluoresc 2019; 7:034001. [PMID: 30893655 DOI: 10.1088/2050-6120/ab11a4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
As soon as excited long-living levels of lanthanides become populated, numerous novel photoexcitation schemes may become available. It paves the way to numerous new possibilities or applications, such as up-conversion (UC) enhancement or intentional depletion towards stimulated emission depletion microscopy (STED). However, this type of studies requires the possibility of performing power dependent measurements upon both single and double photoexcitation. In this article a newly developed setup for double photoexcitation is presented together with preliminary data of Tm3+ doped NaYF4 nanoparticles with different composition and concentration. The results demonstrate different susceptibility of Tm3+ luminescence to numerous factors, such as chemical architecture (composition and design) of the nanoparticles as well as relative photoexcitation intensity at different wavelengths (∼800 nm and 1064 nm).
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Affiliation(s)
- Agata M Kotulska
- PORT Polish Center for Technology Development, Stablowicka 147 Str., 54-066 Wroclaw, Poland. Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okolna 2, 50-422 Wroclaw, Poland
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106
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Liang L, Teh DBL, Dinh ND, Chen W, Chen Q, Wu Y, Chowdhury S, Yamanaka A, Sum TC, Chen CH, Thakor NV, All AH, Liu X. Upconversion amplification through dielectric superlensing modulation. Nat Commun 2019; 10:1391. [PMID: 30918264 PMCID: PMC6437158 DOI: 10.1038/s41467-019-09345-0] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Accepted: 03/07/2019] [Indexed: 11/09/2022] Open
Abstract
Achieving efficient photon upconversion under low irradiance is not only a fundamental challenge but also central to numerous advanced applications spanning from photovoltaics to biophotonics. However, to date, almost all approaches for upconversion luminescence intensification require stringent controls over numerous factors such as composition and size of nanophosphors. Here, we report the utilization of dielectric microbeads to significantly enhance the photon upconversion processes in lanthanide-doped nanocrystals. By modulating the wavefront of both excitation and emission fields through dielectric superlensing effects, luminescence amplification up to 5 orders of magnitude can be achieved. This design delineates a general strategy to converge a low-power incident light beam into a photonic hotspot of high field intensity, while simultaneously enabling collimation of highly divergent emission for far-field accumulation. The dielectric superlensing-mediated strategy may provide a major step forward in facilitating photon upconversion processes toward practical applications in the fields of photobiology, energy conversion, and optogenetics. Emission levels useful for applications from upconversion nanoparticles require high laser irradiance. Here, Liang et al. exploit the superlensing effect from dielectric microbeads to enhance the luminescence efficiency of upconversion nanoparticles and show its application for optogenetics.
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Affiliation(s)
- Liangliang Liang
- Department of Chemistry, National University of Singapore, Singapore, 117543, Singapore
| | - Daniel B L Teh
- Department of Biochemistry, National University of Singapore, Singapore, 117456, Singapore.,Singapore Institute of Neurotechnology (SINAPSE), National University of Singapore, Singapore, 117456, Singapore
| | - Ngoc-Duy Dinh
- Department of Biomedical Engineering, National University of Singapore, Singapore, 119228, Singapore
| | - Weiqiang Chen
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Qiushui Chen
- Department of Chemistry, National University of Singapore, Singapore, 117543, Singapore
| | - Yiming Wu
- Department of Chemistry, National University of Singapore, Singapore, 117543, Singapore
| | - Srikanta Chowdhury
- Department of Neuroscience II, Research Institute of Environmental Medicine, Nagoya University, Nagoya, 464-8601, Japan.,CREST, JST, Honcho Kawaguchi, Saitama, 332-0012, Japan
| | - Akihiro Yamanaka
- Department of Neuroscience II, Research Institute of Environmental Medicine, Nagoya University, Nagoya, 464-8601, Japan.,CREST, JST, Honcho Kawaguchi, Saitama, 332-0012, Japan
| | - Tze Chien Sum
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Chia-Hung Chen
- Singapore Institute of Neurotechnology (SINAPSE), National University of Singapore, Singapore, 117456, Singapore.,Department of Medicine, National University of Singapore, Singapore, 117549, Singapore
| | - Nitish V Thakor
- Singapore Institute of Neurotechnology (SINAPSE), National University of Singapore, Singapore, 117456, Singapore.,Department of Biomedical Engineering, National University of Singapore, Singapore, 119228, Singapore
| | - Angelo H All
- Department of Neurology, Johns Hopkins School of Medicine, Baltimore, MD, 21205, USA
| | - Xiaogang Liu
- Department of Chemistry, National University of Singapore, Singapore, 117543, Singapore. .,Singapore Institute of Neurotechnology (SINAPSE), National University of Singapore, Singapore, 117456, Singapore. .,Center for Functional Materials, National University of Singapore Suzhou Research Institute, Suzhou, Jiangsu, 215123, China.
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107
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Two-Dimensional and Three-Dimensional Single Particle Tracking of Upconverting Nanoparticles in Living Cells. Int J Mol Sci 2019; 20:ijms20061424. [PMID: 30901823 PMCID: PMC6471022 DOI: 10.3390/ijms20061424] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 03/10/2019] [Accepted: 03/19/2019] [Indexed: 01/10/2023] Open
Abstract
Lanthanide-doped upconversion nanoparticles (UCNPs) are inorganic nanomaterials in which the lanthanide cations embedded in the host matrix can convert incident near-infrared light to visible or ultraviolet light. These particles are often used for long-term and real-time imaging because they are extremely stable even when subjected to continuous irradiation for a long time. It is now possible to image their movement at the single particle level with a scale of a few nanometers and track their trajectories as a function of time with a scale of a few microseconds. Such UCNP-based single-particle tracking (SPT) technology provides information about the intracellular structures and dynamics in living cells. Thus far, most imaging techniques have been built on fluorescence microscopic techniques (epifluorescence, total internal reflection, etc.). However, two-dimensional (2D) images obtained using these techniques are limited in only being able to visualize those on the focal planes of the objective lens. On the contrary, if three-dimensional (3D) structures and dynamics are known, deeper insights into the biology of the thick cells and tissues can be obtained. In this review, we introduce the status of the fluorescence imaging techniques, discuss the mathematical description of SPT, and outline the past few studies using UCNPs as imaging probes or biologically functionalized carriers.
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108
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Yuan M, Wang R, Zhang C, Yang Z, Yang X, Han K, Ye J, Wang H, Xu X. Revisiting the Enhanced Red Upconversion Emission from a Single β-NaYF 4:Yb/Er Microcrystal By Doping with Mn 2+ Ions. NANOSCALE RESEARCH LETTERS 2019; 14:103. [PMID: 30888568 PMCID: PMC6424991 DOI: 10.1186/s11671-019-2931-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Accepted: 03/07/2019] [Indexed: 06/09/2023]
Abstract
The presence of manganese ions (Mn2+) in Yb/Er-co-doped nanomaterials results in suppressing green (545 nm) and enhancing red (650 nm) upconversion (UC) emission, which can achieve single-red-band emission to enable applications in bioimaging and drug delivery. Here, we revisit the tunable multicolor UC emission in a single Mn2+-doped β-NaYF4:Yb/Er microcrystal which is synthesized by a simple one-pot hydrothermal method. Excited by a 980 nm continuous wave (CW) laser, the color of the single β-NaYF4:Yb/Er/Mn microrod can be tuned from green to red as the doping Mn2+ ions increase from 0 to 30 mol%. Notably, under a relatively high excitation intensity, a newly emerged emission band at 560 nm (2H9/2 → 4I13/2) becomes significant and further exceeds the traditional green (545 nm) emission. Therefore, the red-to-green (R/G) emission intensity ratio is subdivided into traditional (650 to 545 nm) and new (650 to 560 nm) R/G ones. As the doped Mn2+ ions increase, these two R/G ratios are in lockstep with the same tunable trends at low excitation intensity, but the tunable regions become different at high excitation intensity. Moreover, we demonstrate that the energy transfer (ET) between Mn2+ and Er3+ contributes to the adjustment of R/G ratio and leads to tunable multicolor of the single microrod. The spectroscopic properties and tunable color from the single microrod can be potentially utilized in color display and micro-optoelectronic devices.
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Affiliation(s)
- Maohui Yuan
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, 410073 China
- State Key Laboratory of Pulsed Power Laser Technology, National University of Defense Technology, Changsha, 410073 China
- Hunan Provincial Key Laboratory of High Energy Laser Technology, National University of Defense Technology, Changsha, 410073 China
| | - Rui Wang
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, 410073 China
- State Key Laboratory of Pulsed Power Laser Technology, National University of Defense Technology, Changsha, 410073 China
- Hunan Provincial Key Laboratory of High Energy Laser Technology, National University of Defense Technology, Changsha, 410073 China
| | - Chaofan Zhang
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, 410073 China
- State Key Laboratory of Pulsed Power Laser Technology, National University of Defense Technology, Changsha, 410073 China
- Hunan Provincial Key Laboratory of High Energy Laser Technology, National University of Defense Technology, Changsha, 410073 China
| | - Zining Yang
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, 410073 China
- State Key Laboratory of Pulsed Power Laser Technology, National University of Defense Technology, Changsha, 410073 China
- Hunan Provincial Key Laboratory of High Energy Laser Technology, National University of Defense Technology, Changsha, 410073 China
| | - Xu Yang
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, 410073 China
- State Key Laboratory of Pulsed Power Laser Technology, National University of Defense Technology, Changsha, 410073 China
- Hunan Provincial Key Laboratory of High Energy Laser Technology, National University of Defense Technology, Changsha, 410073 China
| | - Kai Han
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, 410073 China
- State Key Laboratory of Pulsed Power Laser Technology, National University of Defense Technology, Changsha, 410073 China
- Hunan Provincial Key Laboratory of High Energy Laser Technology, National University of Defense Technology, Changsha, 410073 China
| | - Jingfeng Ye
- State Key Laboratory of Laser Interaction with Matter, Northwest Institute of Nuclear Technology, Xi’an, 710024 China
| | - Hongyan Wang
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, 410073 China
- State Key Laboratory of Pulsed Power Laser Technology, National University of Defense Technology, Changsha, 410073 China
- Hunan Provincial Key Laboratory of High Energy Laser Technology, National University of Defense Technology, Changsha, 410073 China
| | - Xiaojun Xu
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, 410073 China
- State Key Laboratory of Pulsed Power Laser Technology, National University of Defense Technology, Changsha, 410073 China
- Hunan Provincial Key Laboratory of High Energy Laser Technology, National University of Defense Technology, Changsha, 410073 China
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109
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Bergstrand J, Liu Q, Huang B, Peng X, Würth C, Resch-Genger U, Zhan Q, Widengren J, Ågren H, Liu H. On the decay time of upconversion luminescence. NANOSCALE 2019; 11:4959-4969. [PMID: 30839016 DOI: 10.1039/c8nr10332a] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
In this study, we systematically investigate the decay characteristics of upconversion luminescence (UCL) under anti-Stokes excitation through numerical simulations based on rate-equation models. We find that a UCL decay profile generally involves contributions from the sensitizer's excited-state lifetime, energy transfer and cross-relaxation processes. It should thus be regarded as the overall temporal response of the whole upconversion system to the excitation function rather than the intrinsic lifetime of the luminescence emitting state. Only under certain conditions, such as when the effective lifetime of the sensitizer's excited state is significantly shorter than that of the UCL emitting state and of the absence of cross-relaxation processes involving the emitting energy level, the UCL decay time approaches the intrinsic lifetime of the emitting state. Subsequently, Stokes excitation is generally preferred in order to accurately quantify the intrinsic lifetime of the emitting state. However, possible cross-relaxation between doped ions at high doping levels can complicate the decay characteristics of the luminescence and even make the Stokes-excitation approach fail. A strong cross-relaxation process can also account for the power dependence of the decay characteristics of UCL.
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Affiliation(s)
- Jan Bergstrand
- Department of Applied Physics, KTH Royal Institute of Technology, S-10691, Stockholm, Sweden
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110
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Zhao Z, Wang Z, Wang D, Wang JX, Pu Y, Chen JF. CFD modelling of gas flow characteristics for the gas-heating holder in environmental transmission electron microscope. CAN J CHEM ENG 2019. [DOI: 10.1002/cjce.23217] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Zhijian Zhao
- Research Centre of the Ministry of Education for High Gravity Engineering Technology; Beijing University of Chemical Technology; Beijing 100029 China
- State Key Laboratory of Organic-Inorganic Composites; Beijing University of Chemical Technology; Beijing 100029 China
| | - Zhiyong Wang
- Research Centre of the Ministry of Education for High Gravity Engineering Technology; Beijing University of Chemical Technology; Beijing 100029 China
- State Key Laboratory of Organic-Inorganic Composites; Beijing University of Chemical Technology; Beijing 100029 China
| | - Dan Wang
- Research Centre of the Ministry of Education for High Gravity Engineering Technology; Beijing University of Chemical Technology; Beijing 100029 China
- State Key Laboratory of Organic-Inorganic Composites; Beijing University of Chemical Technology; Beijing 100029 China
| | - Jie-Xin Wang
- Research Centre of the Ministry of Education for High Gravity Engineering Technology; Beijing University of Chemical Technology; Beijing 100029 China
| | - Yuan Pu
- Research Centre of the Ministry of Education for High Gravity Engineering Technology; Beijing University of Chemical Technology; Beijing 100029 China
- State Key Laboratory of Organic-Inorganic Composites; Beijing University of Chemical Technology; Beijing 100029 China
| | - Jian-Feng Chen
- Research Centre of the Ministry of Education for High Gravity Engineering Technology; Beijing University of Chemical Technology; Beijing 100029 China
- State Key Laboratory of Organic-Inorganic Composites; Beijing University of Chemical Technology; Beijing 100029 China
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111
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Zhou B, Huang J, Yan L, Liu X, Song N, Tao L, Zhang Q. Probing Energy Migration through Precise Control of Interfacial Energy Transfer in Nanostructure. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1806308. [PMID: 30548941 DOI: 10.1002/adma.201806308] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Revised: 11/17/2018] [Indexed: 06/09/2023]
Abstract
A novel mechanistic strategy for probing the energy migration through constructing the interfacial energy transfer (IET) in a core-shell-shell nanostructure is reported. In this design, the trilayer nanostructure is composed of a sensitizing core, a migratory interlayer, and a detective shell layer that interact with each other only by IET and the latter two shell layers are nonresponsive to the incident irradiation. This model is well applied in investigating the energy migration over the Tb, Gd, and Yb sublattices, and the results show that the Gd sublattice holds the best energy migratory performance. Moreover, the finding of energy migration over the Yb sublattice enables the 808 nm excited long-lived upconversion of Tb3+ and Eu3+ , which exhibits unique time-gating performance for information security. The results provide a facile and powerful nanosized model for an in-depth understanding of the fundamentals involving lanthanide interactions, which will further help excite new chances for the frontier applications of lanthanide-based luminescent materials.
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Affiliation(s)
- Bo Zhou
- State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, and Institute of Optical Communication Materials, South China University of Technology, Guangzhou, 510641, China
| | - Jinshu Huang
- State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, and Institute of Optical Communication Materials, South China University of Technology, Guangzhou, 510641, China
| | - Long Yan
- State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, and Institute of Optical Communication Materials, South China University of Technology, Guangzhou, 510641, China
| | - Xuelong Liu
- State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, and Institute of Optical Communication Materials, South China University of Technology, Guangzhou, 510641, China
| | - Nan Song
- State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, and Institute of Optical Communication Materials, South China University of Technology, Guangzhou, 510641, China
| | - Lili Tao
- School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, China
| | - Qinyuan Zhang
- State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, and Institute of Optical Communication Materials, South China University of Technology, Guangzhou, 510641, China
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112
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Peng X, Huang B, Pu R, Liu H, Zhang T, Widengren J, Zhan Q, Ågren H. Fast upconversion super-resolution microscopy with 10 μs per pixel dwell times. NANOSCALE 2019; 11:1563-1569. [PMID: 30644963 DOI: 10.1039/c8nr08986h] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Multi-photon upconversion super-resolution microscopy is a recently proposed imaging modality, based on lanthanide-doped nanocrystals, which can emit visible emission upon low-intensity near-infrared excitation. This imaging modality exhibits many advantages, including increased imaging depth, high signal-to-noise ratio, low phototoxicity, and high photostability. However, two factors seriously restrict its scanning speed, sometimes even to an intolerable degree; the long lanthanide emission lifetime and the low brightness. For proper imaging, pixel dwell times of several milliseconds are often required. In this work, a facile strategy is proposed to overcome these two obstacles. By adopting a high sensitizer (Yb3+) doping strategy for upconversion nanocrystals, their emission intensity is greatly increased and their emission transients are significantly accelerated, without losing the emission depletion efficiency induced by the depletion laser. This enables the implementation of a very fast upconversion stimulated emission depletion super-resolution microscopy with a scanning speed of 10 μs per pixel. This work opens the possibility for upconversion super-resolution microscopy to capture vital biological activities in real time.
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Affiliation(s)
- Xingyun Peng
- Centre for Optical and Electromagnetic Research, South China Academy of Advanced Optoelectronics, South China Normal University, 510006 Guangzhou, China.
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113
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Qin X, Xu J, Wu Y, Liu X. Energy-Transfer Editing in Lanthanide-Activated Upconversion Nanocrystals: A Toolbox for Emerging Applications. ACS CENTRAL SCIENCE 2019; 5:29-42. [PMID: 30693323 PMCID: PMC6346627 DOI: 10.1021/acscentsci.8b00827] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2018] [Indexed: 05/21/2023]
Abstract
Advanced nanoscale synthetic techniques provide a versatile platform for programmable control over the size, morphology, and composition of nanocrystals doped with lanthanide ions. Characteristic upconversion luminescence features originating from the 4f-4f optical transitions of lanthanides can be achieved through predesigned energy transfer pathways, enabling wide applications ranging from ultrasensitive biological detection to advanced spectroscopic instrumentation with high spatiotemporal resolution. Here, we review recent scientific and technological discoveries that have prompted the realization of these peculiar functions of lanthanide-doped upconversion nanocrystals and discuss the mechanistic studies of energy transfer involved in upconversion processes. These advanced schemes include cross relaxation-mediated depletion, multipulse sequential pumping, and nanostructural configuration design. Our emphasis is placed on disruptive technologies such as super-resolution microscopy, optogenetics, nanolasing, and optical anticounterfeiting, which take full advantage of the upconversion nanophenomena in relation to lanthanide-doped nanocrystals.
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Affiliation(s)
- Xian Qin
- Department
of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
| | - Jiahui Xu
- Department
of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
| | - Yiming Wu
- Department
of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
| | - Xiaogang Liu
- Department
of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
- Center
for Functional Materials, NUS Suzhou Research
Institute, Suzhou, Jiangsu 215123, P.
R. China
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114
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Wang M, Zhang T, Hu Y, Qin Y, Wei W. In Situ Synthesis of Dicarboxylic Acid Functionalized Upconversion Nanoparticles for Bioimaging Applications. CHEMPHOTOCHEM 2018. [DOI: 10.1002/cptc.201800180] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Meifeng Wang
- MOE Key Laboratory of Laser Life Science and Institute of Laser Life Science, College of Biophotonics; South China Normal University; Guangzhou 510631 China
| | - Tao Zhang
- MOE Key Laboratory of Laser Life Science and Institute of Laser Life Science, College of Biophotonics; South China Normal University; Guangzhou 510631 China
| | - Yongjun Hu
- MOE Key Laboratory of Laser Life Science and Institute of Laser Life Science, College of Biophotonics; South China Normal University; Guangzhou 510631 China
| | - Yiru Qin
- School of Life Sciences; South China Normal University; Guangzhou 510631 China
| | - Wei Wei
- MOE Key Laboratory of Laser Life Science and Institute of Laser Life Science, College of Biophotonics; South China Normal University; Guangzhou 510631 China
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115
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Huang B, Wu Q, Peng X, Yao L, Peng D, Zhan Q. One-scan fluorescence emission difference nanoscopy developed with excitation orthogonalized upconversion nanoparticles. NANOSCALE 2018; 10:21025-21030. [PMID: 30427028 DOI: 10.1039/c8nr07017b] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
We experimentally realized one-scan fluorescence emission difference nanoscopy (FED) by simultaneously imaging two different color emissions of NaYF4:Er3+@NaYF4@NaYF4:Yb3+/Tm3+ upconversion nanoparticles. Under the irradiation of two synchronized laser beams, a solid 940 nm beam and a hollow 808 nm beam, green emission of Er3+ and blue emission of Tm3+ can be orthogonally generated and collected. After simple subtraction, a resulting super-resolution image featuring 54 nm resolution was obtained. This strategy of excitation orthogonality would greatly improve the imaging speed and the applicability of FED nanoscopy.
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Affiliation(s)
- Bingru Huang
- Centre for Optical and Electromagnetic Research, Guangdong Provincial Key Laboratory of Optical Information Materials and Technology, South China Academy of Advanced Optoelectronics, South China Normal University, 510006 Guangzhou, China.
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116
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Pu Y, Leng J, Wang D, Wang JX, Foster NR, Chen JF. Process intensification for scalable synthesis of ytterbium and erbium co-doped sodium yttrium fluoride upconversion nanodispersions. POWDER TECHNOL 2018. [DOI: 10.1016/j.powtec.2018.09.035] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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117
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Cheng X, Ge H, Wei Y, Zhang K, Su W, Zhou J, Yin L, Zhan Q, Jing S, Huang L. Design for Brighter Photon Upconversion Emissions via Energy Level Overlap of Lanthanide Ions. ACS NANO 2018; 12:10992-10999. [PMID: 30299934 DOI: 10.1021/acsnano.8b04988] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The perfect energy level overlap of 2H11/2, 4S3/2, and 4F9/2 in Er3+ ions with those of 5F3, 5F4/5S2, and 5F5 in adjacently codoped Ho3+ ions allows efficient interenergy transfer. Therefore, in addition to routine activators, Er3+ or Ho3+ can further act as sensitizers to transfer the upconverted energy to nearby Ho3+ or Er3+, resulting in enhanced upconversion luminescence due to the emission overlap. Proper codoping of Er3+/Ho3+ or Ho3+/Er3+ obviously elevates the maximum doping concentration (thus producing additional upconverted photons) to a level higher than that causing luminescence quenching and significantly enhances upconversion emissions compared with those of singly Er3+ or Ho3+-doped host materials. Indeed, the so-far strongest red upconversion emission under 1532 nm excitation was obtained in LiYF4:Er/Ho@LiYF4 nanoparticles and Ho3+-sensitized Er3+ upconversion emissions excited by 1150 nm laser was simultaneously discovered. With great enhancement compared with that of singly Ho3+ doped counterparts, this work demonstrates the generality and rationality of our design strategy.
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Affiliation(s)
- Xingwen Cheng
- Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) , Nanjing Tech University , Nanjing 211816 China
| | - Huan Ge
- Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) , Nanjing Tech University , Nanjing 211816 China
| | - Yang Wei
- Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) , Nanjing Tech University , Nanjing 211816 China
| | - Kun Zhang
- Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) , Nanjing Tech University , Nanjing 211816 China
| | - Wenhong Su
- Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) , Nanjing Tech University , Nanjing 211816 China
| | - Jimin Zhou
- School of Chemistry and Molecular Engineering , Nanjing Tech University , Nanjing 211816 China
| | - Lisha Yin
- Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) , Nanjing Tech University , Nanjing 211816 China
| | - Qiuqiang Zhan
- Centre for Optical and Electromagnetic Research, Guangdong Provincial Key Laboratory of Optical Information Materials and Technology, South China Academy of Advanced Optoelectronics , South China Normal University , 510006 Guangzhou , China
| | - Su Jing
- School of Chemistry and Molecular Engineering , Nanjing Tech University , Nanjing 211816 China
| | - Ling Huang
- Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) , Nanjing Tech University , Nanjing 211816 China
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118
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Feng M, Lv R, Xiao L, Hu B, Zhu S, He F, Yang P, Tian J. Highly Erbium-Doped Nanoplatform with Enhanced Red Emission for Dual-Modal Optical-Imaging-Guided Photodynamic Therapy. Inorg Chem 2018; 57:14594-14602. [DOI: 10.1021/acs.inorgchem.8b02257] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Miao Feng
- Engineering Research Center of Molecular and Neuro Imaging, Ministry of Education, School of Life Science and Technology, Xidian University, Xi’an, Shaanxi 710071, China
| | - Ruichan Lv
- Engineering Research Center of Molecular and Neuro Imaging, Ministry of Education, School of Life Science and Technology, Xidian University, Xi’an, Shaanxi 710071, China
| | - Liyang Xiao
- Engineering Research Center of Molecular and Neuro Imaging, Ministry of Education, School of Life Science and Technology, Xidian University, Xi’an, Shaanxi 710071, China
| | - Bo Hu
- Engineering Research Center of Molecular and Neuro Imaging, Ministry of Education, School of Life Science and Technology, Xidian University, Xi’an, Shaanxi 710071, China
| | - Shouping Zhu
- Engineering Research Center of Molecular and Neuro Imaging, Ministry of Education, School of Life Science and Technology, Xidian University, Xi’an, Shaanxi 710071, China
| | - Fei He
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Material Sciences and Chemical Engineering, Harbin Engineering University, Harbin 150001, PR China
| | - Piaoping Yang
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Material Sciences and Chemical Engineering, Harbin Engineering University, Harbin 150001, PR China
| | - Jie Tian
- Engineering Research Center of Molecular and Neuro Imaging, Ministry of Education, School of Life Science and Technology, Xidian University, Xi’an, Shaanxi 710071, China
- Key Laboratory of Molecular Imaging of Chinese Academy of Sciences, Institute of Automation, Chinese Academy of Sciences, Beijing 100190, China
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119
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Liang T, Li Z, Wang P, Zhao F, Liu J, Liu Z. Breaking Through the Signal-to-Background Limit of Upconversion Nanoprobes Using a Target-Modulated Sensitizing Switch. J Am Chem Soc 2018; 140:14696-14703. [DOI: 10.1021/jacs.8b07329] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tao Liang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Zhen Li
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules and College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, China
| | - Peipei Wang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Fangzhou Zhao
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Jizhou Liu
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Zhihong Liu
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
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120
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Zhou J, Leaño JL, Liu Z, Jin D, Wong KL, Liu RS, Bünzli JCG. Impact of Lanthanide Nanomaterials on Photonic Devices and Smart Applications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1801882. [PMID: 30066496 DOI: 10.1002/smll.201801882] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 06/16/2018] [Indexed: 05/22/2023]
Abstract
Half a century after its initial emergence, lanthanide photonics is facing a profound remodeling induced by the upsurge of nanomaterials. Lanthanide-doped nanomaterials hold promise for bioapplications and photonic devices because they ally the unmatched advantages of lanthanide photophysical properties with those arising from large surface-to-volume ratios and quantum confinement that are typical of nanoobjects. Cutting-edge technologies and devices have recently arisen from this association and are in turn promoting nanophotonic materials as essential tools for a deeper understanding of biological mechanisms and related medical diagnosis and therapy, and as crucial building blocks for next-generation photonic devices. Here, the recent progress in the development of nanomaterials, nanotechnologies, and nanodevices for clinical uses and commercial exploitation is reviewed. The candidate nanomaterials with mature synthesis protocols and compelling optical uniqueness are surveyed. The specific fields that are directly driven by lanthanide doped nanomaterials are emphasized, spanning from in vivo imaging and theranostics, micro-/nanoscopic techniques, point-of-care medical testing, forensic fingerprints detection, to micro-LED devices.
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Affiliation(s)
- Jiajia Zhou
- Faculty of Science, Institute for Biomedical Materials and Devices, University of Technology, Sydney, New South Wales, 2007, Australia
| | - Julius L Leaño
- Department of Chemistry, National Taiwan University Taipei (NTU), Taipei, 106, Taiwan
- Nanoscience and Technology Program, Taiwan International Graduate Program, Academia Sinica and NTU, Taipei, 106, Taiwan
- Philippine Textile Research Institute, Department of Science and Technology, Taguig City, 1631, Philippines
| | - Zhenyu Liu
- HKBU Institute of Research and Continuing Education, Shenzhen Virtual University Park, Shenzhen, 518057, P. R. China
| | - Dayong Jin
- Faculty of Science, Institute for Biomedical Materials and Devices, University of Technology, Sydney, New South Wales, 2007, Australia
| | - Ka-Leung Wong
- Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong SAR, P. R. China
| | - Ru-Shi Liu
- Department of Chemistry, National Taiwan University Taipei (NTU), Taipei, 106, Taiwan
- Department of Mechanical Engineering and Graduate Institute of Manufacturing Technology, National Taipei University of Technology, Taipei, 106, Taiwan
| | - Jean-Claude G Bünzli
- Faculty of Science, Institute for Biomedical Materials and Devices, University of Technology, Sydney, New South Wales, 2007, Australia
- Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong SAR, P. R. China
- Institute of Chemical Sciences & Engineering, Swiss Federal Institute of Technology, Lausanne (EPFL), Switzerland
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121
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Recent progress in the green synthesis of rare-earth doped upconversion nanophosphors for optical bioimaging from cells to animals. Chin J Chem Eng 2018. [DOI: 10.1016/j.cjche.2018.03.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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122
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Yan L, Zhou B, Song N, Liu X, Huang J, Wang T, Tao L, Zhang Q. Self-sensitization induced upconversion of Er 3+ in core-shell nanoparticles. NANOSCALE 2018; 10:17949-17957. [PMID: 30226242 DOI: 10.1039/c8nr04816a] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A mechanistic study of upconversion from lanthanides is of great importance for the fundamental research of upconversion materials and their diverse frontier applications. However, the most efficient upconversion of lanthanides is still obtained in a commonly used sensitizer-activator coupled system. Here we report a mechanistic investigation on the upconversion of Er3+ through self-sensitization which is applicable for 808, 980 and 1530 nm excitations. It is found that the cooperative energy transfer upconversion followed by cross-relaxation occurring among Er3+ ions plays a critical role in producing and enhancing the red upconversion for the samples with high dopant concentrations (e.g., >20 mol%). The red upconversion color can be further purified and enhanced by mediating the upconversion dynamics through introducing the lanthanides of Ho3+, Tm3+ and Yb3+, which can effectively contribute to the population in the red emitting state. Moreover, the energy migration in the Er-sublattice was also found to be a possible origin for quenching upconversion, which was proved and effectively suppressed by designing a tri-layered nanostructure where the distribution of Er3+ is spatially controllable. Our results gain access into the insight of upconversion dynamics in self-sensitization induced upconversion which would help the search for other new kinds of upconversion materials.
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Affiliation(s)
- Long Yan
- State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, and Institute of Optical Communication Materials, South China University of Technology, Guangzhou, 510641, China.
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123
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Zhang Z, Shikha S, Liu J, Zhang J, Mei Q, Zhang Y. Upconversion Nanoprobes: Recent Advances in Sensing Applications. Anal Chem 2018; 91:548-568. [DOI: 10.1021/acs.analchem.8b04049] [Citation(s) in RCA: 139] [Impact Index Per Article: 23.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Zhiming Zhang
- School of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, 200444, Shanghai, China
| | - Swati Shikha
- Department of Biomedical Engineering, Faculty of Engineering, National University of Singapore, Singapore 117583, Singapore
| | - Jinliang Liu
- School of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, 200444, Shanghai, China
| | - Jing Zhang
- School of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, 200444, Shanghai, China
| | - Qingsong Mei
- Department of Biomedical Engineering, Faculty of Engineering, National University of Singapore, Singapore 117583, Singapore
| | - Yong Zhang
- Department of Biomedical Engineering, Faculty of Engineering, National University of Singapore, Singapore 117583, Singapore
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124
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Krause S, Koerstz M, Arppe-Tabbara R, Soukka T, Vosch T. NIR induced modulation of the red emission from erbium ions for selective lanthanide imaging. Methods Appl Fluoresc 2018; 6:044001. [PMID: 30182927 DOI: 10.1088/2050-6120/aadef1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Upon direct excitation with green light (522 nm), Er3+ ion doped nanoparticles feature a number of radiative and non-radiative decay pathways, leading to distinct and sharp emission lines in the visible and near-infrared (NIR) range. Here we apply, in addition to continuous 522 nm irradiation, a modulated NIR irradiation (1143 nm) to actively control and modulate the red emission intensity (around 650 nm). The modulation of red Er3+ ion emission at a chosen frequency allows us to reconstruct fluorescence images from the Fourier transform amplitude at this particular frequency. Since only the emission from the Er3+ ion is modulated, it allows to selectively recover the lanthanide specific signal, removing any non-modulated auto-fluorescence or background emission resulting from the continuous 522 nm excitation. The modulated emission of specific lanthanides can open up new detection opportunities for selective signal recovery.
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Affiliation(s)
- Stefan Krause
- Nano-Science Center/Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen, Denmark
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125
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Mai H, Lu T, Li Q, Sun Q, Vu K, Chen H, Wang G, Humphrey MG, Kremer F, Li L, Withers RL, Liu Y. Photovoltaic Effect of a Ferroelectric-Luminescent Heterostructure under Infrared Light Illumination. ACS APPLIED MATERIALS & INTERFACES 2018; 10:29786-29794. [PMID: 30088753 DOI: 10.1021/acsami.8b09745] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In this report, a ferroelectric-luminescent heterostructure is designed to convert infrared light into electric power. We use BiFeO3 (BFO) as the ferroelectric layer and Y2O3:Yb,Tm (YOT) as the upconversion layer. Different from conventional ferroelectric materials, this heterostructure exhibits switchable and stable photovoltaic effects under 980 nm illumination, whose energy is much lower than the band gap of BFO. The energy transfer mechanism in this heterostructure is therefore studied carefully. It is found that a highly efficient nonradiative energy transfer process from YOT to BFO plays a critical role in achieving the below-band-gap photon-excited photovoltaic effects in this heterostructure. Our results also indicate that by introducing asymmetric electrodes, both the photovoltage and photocurrent are further enhanced when the built-in field and the depolarization field are aligned. The construction of ferroelectric-luminescent heterostructure is consequently proposed as a promising route to enhance the photovoltaic effects of ferroelectric materials by extending the absorption of the solar spectrum.
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Affiliation(s)
| | | | - Qian Li
- Advanced Photon Source , Argonne National Laboratory , Argonne , Illinois 60439 , United States
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126
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Wang Y, Zheng K, Song S, Fan D, Zhang H, Liu X. Remote manipulation of upconversion luminescence. Chem Soc Rev 2018; 47:6473-6485. [PMID: 29901043 DOI: 10.1039/c8cs00124c] [Citation(s) in RCA: 91] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The precise control over the luminescence profile of lanthanide-doped upconversion nanomaterials is of fundamental importance for their applications in wide-ranging fields of research. Conventional chemical approaches can lead to color-tunable emissions, but they generally require stringent modification either on dopant composition or doping concentration. In this Tutorial Review, we highlight a number of complementary methods that offer remote dynamic modulation of upconversion luminescence across the visible spectrum. This review serves to provide a summary of existing guidelines for controlling the emission spectrum of upconversion nanocrystals with fixed materials composition. The review will also discuss the major approaches to manipulating excitation energies and consider likely research challenges for further development of the field at the interface between nanotechnology and biological science.
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Affiliation(s)
- Yu Wang
- SZU-NUS Collaborative Center and International Collaborative Laboratory of 2D Materials for Optoelectronic Science & Technology of Ministry of Education, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
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127
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Chen C, Wang F, Wen S, Su QP, Wu MCL, Liu Y, Wang B, Li D, Shan X, Kianinia M, Aharonovich I, Toth M, Jackson SP, Xi P, Jin D. Multi-photon near-infrared emission saturation nanoscopy using upconversion nanoparticles. Nat Commun 2018; 9:3290. [PMID: 30120242 PMCID: PMC6098146 DOI: 10.1038/s41467-018-05842-w] [Citation(s) in RCA: 91] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2017] [Accepted: 07/26/2018] [Indexed: 01/03/2023] Open
Abstract
Multiphoton fluorescence microscopy (MPM), using near infrared excitation light, provides increased penetration depth, decreased detection background, and reduced phototoxicity. Using stimulated emission depletion (STED) approach, MPM can bypass the diffraction limitation, but it requires both spatial alignment and temporal synchronization of high power (femtosecond) lasers, which is limited by the inefficiency of the probes. Here, we report that upconversion nanoparticles (UCNPs) can unlock a new mode of near-infrared emission saturation (NIRES) nanoscopy for deep tissue super-resolution imaging with excitation intensity several orders of magnitude lower than that required by conventional MPM dyes. Using a doughnut beam excitation from a 980 nm diode laser and detecting at 800 nm, we achieve a resolution of sub 50 nm, 1/20th of the excitation wavelength, in imaging of single UCNP through 93 μm thick liver tissue. This method offers a simple solution for deep tissue super resolution imaging and single molecule tracking.
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Affiliation(s)
- Chaohao Chen
- Institute for Biomedical Materials and Devices (IBMD), Faculty of Science, University of Technology Sydney, Sydney, NSW, 2007, Australia
| | - Fan Wang
- Institute for Biomedical Materials and Devices (IBMD), Faculty of Science, University of Technology Sydney, Sydney, NSW, 2007, Australia.
| | - Shihui Wen
- Institute for Biomedical Materials and Devices (IBMD), Faculty of Science, University of Technology Sydney, Sydney, NSW, 2007, Australia
| | - Qian Peter Su
- Institute for Biomedical Materials and Devices (IBMD), Faculty of Science, University of Technology Sydney, Sydney, NSW, 2007, Australia
| | - Mike C L Wu
- Heart Research Institute, and Charles Perkins Centre, University of Sydney, Camperdown, NSW, 2006, Australia
| | - Yongtao Liu
- Institute for Biomedical Materials and Devices (IBMD), Faculty of Science, University of Technology Sydney, Sydney, NSW, 2007, Australia
| | - Baoming Wang
- Institute for Biomedical Materials and Devices (IBMD), Faculty of Science, University of Technology Sydney, Sydney, NSW, 2007, Australia
| | - Du Li
- Institute for Biomedical Materials and Devices (IBMD), Faculty of Science, University of Technology Sydney, Sydney, NSW, 2007, Australia
| | - Xuchen Shan
- Institute for Biomedical Materials and Devices (IBMD), Faculty of Science, University of Technology Sydney, Sydney, NSW, 2007, Australia
| | - Mehran Kianinia
- Institute for Biomedical Materials and Devices (IBMD), Faculty of Science, University of Technology Sydney, Sydney, NSW, 2007, Australia
| | - Igor Aharonovich
- Institute for Biomedical Materials and Devices (IBMD), Faculty of Science, University of Technology Sydney, Sydney, NSW, 2007, Australia
| | - Milos Toth
- Institute for Biomedical Materials and Devices (IBMD), Faculty of Science, University of Technology Sydney, Sydney, NSW, 2007, Australia
| | - Shaun P Jackson
- Heart Research Institute, and Charles Perkins Centre, University of Sydney, Camperdown, NSW, 2006, Australia
| | - Peng Xi
- Department of Biomedical Engineering, College of Engineering, Peking University, 100871, Beijing, China
| | - Dayong Jin
- Institute for Biomedical Materials and Devices (IBMD), Faculty of Science, University of Technology Sydney, Sydney, NSW, 2007, Australia.
- ARC Research Hub for Integrated Device for End-user Analysis at Low-levels (IDEAL), Faculty of Science, University of Technology Sydney, Sydney, NSW, 2007, Australia.
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128
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Xue B, Wang D, Tu L, Sun D, Jing P, Chang Y, Zhang Y, Liu X, Zuo J, Song J, Qu J, Meijer EJ, Zhang H, Kong X. Ultrastrong Absorption Meets Ultraweak Absorption: Unraveling the Energy-Dissipative Routes for Dye-Sensitized Upconversion Luminescence. J Phys Chem Lett 2018; 9:4625-4631. [PMID: 30066566 DOI: 10.1021/acs.jpclett.8b01931] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Dye sensitization is becoming a new dimension to highly improve the upconversion luminescence (UCL) of lanthanide-doped upconversion nanoparticles (UCNPs). However, there is still a lack of general understanding of the dye-UCNPs interactions, especially the confused large mismatch between the inputs and outputs. By taking dye-sensitized NaYF4:Yb/Er@NaYF4:Nd UCNPs as a model system, we not only revealed the in-depth energy-dissipative process for dye-sensitized UCL but also confirmed the first ever experimental observation of the energy back transfer (EBT) in the dye-sensitized UCL. Furthermore, this energy-dissipative EBT restricted the optimal ratio of dyes to UCNP. By unearthing all of the energy loss behind the EBT, energy transfer, and energy migration processes, this paper sheds light on the further design of effective dye-sensitized nanosystems for UCL or even downconversion luminescence.
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Affiliation(s)
- Bin Xue
- Key Lab of Optoelectronics Devices and Systems of Ministry of Education/Guangdong Province , Shenzhen University , 518060 Shenzhen , China
- State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics , Chinese Academy of Sciences , Changchun 130033 , China
| | - Dan Wang
- Key Lab of Optoelectronics Devices and Systems of Ministry of Education/Guangdong Province , Shenzhen University , 518060 Shenzhen , China
| | - Langping Tu
- State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics , Chinese Academy of Sciences , Changchun 130033 , China
- Van't Hoff Institute for Molecular Sciences , University of Amsterdam , Science Park 904 , 1098 XH Amsterdam , The Netherlands
| | - Dapeng Sun
- Van't Hoff Institute for Molecular Sciences , University of Amsterdam , Science Park 904 , 1098 XH Amsterdam , The Netherlands
| | - Pengtao Jing
- State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics , Chinese Academy of Sciences , Changchun 130033 , China
| | - Yulei Chang
- State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics , Chinese Academy of Sciences , Changchun 130033 , China
| | - Youlin Zhang
- State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics , Chinese Academy of Sciences , Changchun 130033 , China
| | - Xiaomin Liu
- State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics , Chinese Academy of Sciences , Changchun 130033 , China
| | - Jing Zuo
- State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics , Chinese Academy of Sciences , Changchun 130033 , China
- Graduate University of the Chinese Academy of Sciences , Beijing 100049 , China
- Van't Hoff Institute for Molecular Sciences , University of Amsterdam , Science Park 904 , 1098 XH Amsterdam , The Netherlands
| | - Jun Song
- Key Lab of Optoelectronics Devices and Systems of Ministry of Education/Guangdong Province , Shenzhen University , 518060 Shenzhen , China
| | - Junle Qu
- Key Lab of Optoelectronics Devices and Systems of Ministry of Education/Guangdong Province , Shenzhen University , 518060 Shenzhen , China
| | - Evert Jan Meijer
- Van't Hoff Institute for Molecular Sciences , University of Amsterdam , Science Park 904 , 1098 XH Amsterdam , The Netherlands
| | - Hong Zhang
- Van't Hoff Institute for Molecular Sciences , University of Amsterdam , Science Park 904 , 1098 XH Amsterdam , The Netherlands
| | - Xianggui Kong
- State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics , Chinese Academy of Sciences , Changchun 130033 , China
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129
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You W, Tu D, Zheng W, Shang X, Song X, Zhou S, Liu Y, Li R, Chen X. Large-scale synthesis of uniform lanthanide-doped NaREF 4 upconversion/downshifting nanoprobes for bioapplications. NANOSCALE 2018; 10:11477-11484. [PMID: 29888369 DOI: 10.1039/c8nr03252a] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Lanthanide (Ln3+)-doped NaREF4 (RE = rare earth) nanocrystals (NCs) are one of the most widely studied upconversion and downshifting luminescent nanoprobes. However, the size and optical performance of the Ln3+-doped NaREF4 NCs produced by the available lab-scale synthesis may vary from batch to batch, which inevitably limits their practical bioapplications. Herein, we report the synthesis of uniform Ln3+-doped NaREF4 NCs via a facile solid-liquid-thermal-decomposition (SLTD) method by directly employing NaHF2 powder as a fluoride and sodium precursor. The proposed SLTD strategy is easy to perform, time-saving and cost-effective, making it ideal for scale-up syntheses. Particularly, over 63 g of β-NaGdF4:Yb,Er@NaYF4 core/shell NCs with narrow size variation (<7%) were synthesized via a one-pot reaction. By virtue of their superior upconversion and downshifting luminescence, we employed the synthesized core/shell nanoprobes for the in vitro detection of prostate-specific antigen with a limit of detection down to 1.8 ng mL-1, and for in vivo near-infrared imaging with a high signal-to-noise ratio of 12. These findings may pave the way for the commercialization of Ln3+-doped nanoprobes in bioassay kits for versatile clinical applications.
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Affiliation(s)
- Wenwu You
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China.
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130
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Wen S, Zhou J, Zheng K, Bednarkiewicz A, Liu X, Jin D. Advances in highly doped upconversion nanoparticles. Nat Commun 2018; 9:2415. [PMID: 29925838 PMCID: PMC6010470 DOI: 10.1038/s41467-018-04813-5] [Citation(s) in RCA: 450] [Impact Index Per Article: 75.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Accepted: 05/25/2018] [Indexed: 11/08/2022] Open
Abstract
Lanthanide-doped upconversion nanoparticles (UCNPs) are capable of converting near-infra-red excitation into visible and ultraviolet emission. Their unique optical properties have advanced a broad range of applications, such as fluorescent microscopy, deep-tissue bioimaging, nanomedicine, optogenetics, security labelling and volumetric display. However, the constraint of concentration quenching on upconversion luminescence has hampered the nanoscience community to develop bright UCNPs with a large number of dopants. This review surveys recent advances in developing highly doped UCNPs, highlights the strategies that bypass the concentration quenching effect, and discusses new optical properties as well as emerging applications enabled by these nanoparticles.
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Affiliation(s)
- Shihui Wen
- Institute for Biomedical Materials & Devices (IBMD), Faculty of Science, University of Technology Sydney, Sydney, NSW, 2007, Australia
| | - Jiajia Zhou
- Institute for Biomedical Materials & Devices (IBMD), Faculty of Science, University of Technology Sydney, Sydney, NSW, 2007, Australia
| | - Kezhi Zheng
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543, Singapore
| | - Artur Bednarkiewicz
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okólna 2, 50-422, Wroclaw, Poland.
- Wroclaw Research Center, EIT+, Stablowicka 147, 54-066, Wroclaw, Poland.
| | - Xiaogang Liu
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543, Singapore.
| | - Dayong Jin
- Institute for Biomedical Materials & Devices (IBMD), Faculty of Science, University of Technology Sydney, Sydney, NSW, 2007, Australia.
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131
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Fan X, Yang J, Loh XJ, Li Z. Polymeric Janus Nanoparticles: Recent Advances in Synthetic Strategies, Materials Properties, and Applications. Macromol Rapid Commun 2018; 40:e1800203. [PMID: 29900609 DOI: 10.1002/marc.201800203] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 04/17/2018] [Indexed: 12/13/2022]
Abstract
Polymeric Janus nanoparticles with two sides of incompatible chemistry have received increasing attention due to their tunable asymmetric structure and unique material characteristics. Recently, with the rapid progress in controlled polymerization combined with novel fabrication techniques, a large array of functional polymeric Janus particles are diversified with sophisticated architecture and applications. In this review, the most recently developed strategies for controlled synthesis of polymeric Janus nanoparticles with well-defined size and complex superstructures are summarized. In addition, the pros and cons of each approach in mediating the anisotropic shapes of polymeric Janus particles as well as their asymmetric spatial distribution of chemical compositions and functionalities are discussed and compared. Finally, these newly developed structural nanoparticles with specific shapes and surface functions orientated applications in different domains are also discussed, followed by the perspectives and challenges faced in the further advancement of polymeric Janus nanoparticles as high performance materials.
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Affiliation(s)
- Xiaoshan Fan
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453007, China
| | - Jing Yang
- Institute of Materials Research and Engineering, A*STAR (Agency for Science Technology and Research), 2 Fusionopolis Way, Innovis, #08-03, Singapore, 138634, Singapore
| | - Xian Jun Loh
- Institute of Materials Research and Engineering, A*STAR (Agency for Science Technology and Research), 2 Fusionopolis Way, Innovis, #08-03, Singapore, 138634, Singapore
| | - Zibiao Li
- Institute of Materials Research and Engineering, A*STAR (Agency for Science Technology and Research), 2 Fusionopolis Way, Innovis, #08-03, Singapore, 138634, Singapore
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132
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Ye S, Yan W, Zhao M, Peng X, Song J, Qu J. Low-Saturation-Intensity, High-Photostability, and High-Resolution STED Nanoscopy Assisted by CsPbBr 3 Quantum Dots. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1800167. [PMID: 29687514 DOI: 10.1002/adma.201800167] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Revised: 02/21/2018] [Indexed: 06/08/2023]
Abstract
Stimulated emission depletion (STED) nanoscopy is one of the most promising super-resolution imaging techniques for microstructure imaging. Commercial CdSe@ZnS quantum dots are used as STED probes and ≈50 nm lateral resolution is obtained. Compared with other quantum dots, perovskite CsPbBr3 nanoparticles (NPs) possess higher photoluminescence quantum yield and larger absorption cross-section, making them a more effective probe for STED nanoscopy. In this study, CsPbBr3 NPs are used as probes for STED nanoscopy imaging. The fluorescence intensity of the CsPbBr3 sample is hardly weakened at all after 200 min irradiation with a 39.8 mW depletion laser, indicating excellent photobleaching resistance of the CsPbBr3 NPs. The saturation intensity of the CsPbBr3 NPs is extremely low and estimated to be only 0.4 mW (0.126 MW cm-2 ). Finally, an ultrahigh lateral resolution of 20.6 nm is obtained for a single nanoparticle under 27.5 mW STED laser irradiation in CsPbBr3 -based STED nanoscopy imaging, which is a tenfold improvement compared with confocal microscopy. Because of its high fluorescence stability and ultrahigh resolution under lower depletion power, CsPbBr3 -assisted STED nanoscopy has great potential to investigate microstructures that require super-resolution and long-term imaging.
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Affiliation(s)
- Shuai Ye
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Wei Yan
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Mengjie Zhao
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Xiao Peng
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Jun Song
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Junle Qu
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, P. R. China
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133
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Wei Y, Quan L, Zhou C, Zhan Q. Factors relating to the biodistribution & clearance of nanoparticles & their effects on in vivo application. Nanomedicine (Lond) 2018; 13:1495-1512. [DOI: 10.2217/nnm-2018-0040] [Citation(s) in RCA: 98] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Nanoparticles have promising biomedical applications for drug delivery, tumor imaging and tumor treatment. Pharmacokinetics are important for the in vivo application of nanoparticles. Biodistribution and clearance are largely defined as the key points of pharmacokinetics to maximize therapeutic efficacy and to minimize side effects. Different engineered nanoparticles have different biodistribution and clearance processes. The interactions of organs with nanoparticles, which are determined by the characteristics of the organs and the biochemical/physical properties of the nanoparticles, are a major factor influencing biodistribution and clearance. In this review, the clearance functions of organs and the properties related to pharmacokinetics, including nanoparticle size, shape, biodegradation and surface modifications are discussed.
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Affiliation(s)
- Yanchun Wei
- Provincial Key Laboratory for Interventional Medical Devices, Huaiyin Institute of Technology, Huai'an, Jiangsu 223001, PR China
- Centre for Optical & Electromagnetic Research, Guangdong Provincial Key Laboratory of Optical Information Materials & Technology, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, PR China
| | - Li Quan
- Provincial Key Laboratory for Interventional Medical Devices, Huaiyin Institute of Technology, Huai'an, Jiangsu 223001, PR China
| | - Chao Zhou
- Centre for Optical & Electromagnetic Research, Guangdong Provincial Key Laboratory of Optical Information Materials & Technology, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, PR China
| | - Qiuqiang Zhan
- Centre for Optical & Electromagnetic Research, Guangdong Provincial Key Laboratory of Optical Information Materials & Technology, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, PR China
- Key Laboratory of Optoelectronic Devices & Systems of Ministry of Education & Guangdong Province, Shenzhen University, Shenzhen 518052, PR China
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134
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Nanoparticles for super-resolution microscopy and single-molecule tracking. Nat Methods 2018; 15:415-423. [PMID: 29808018 DOI: 10.1038/s41592-018-0012-4] [Citation(s) in RCA: 154] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Accepted: 04/16/2018] [Indexed: 01/23/2023]
Abstract
We review the use of luminescent nanoparticles in super-resolution imaging and single-molecule tracking, and showcase novel approaches to super-resolution imaging that leverage the brightness, stability, and unique optical-switching properties of these nanoparticles. We also discuss the challenges associated with their use in biological systems, including intracellular delivery and molecular targeting. In doing so, we hope to provide practical guidance for biologists and continue to bridge the fields of super-resolution imaging and nanoparticle engineering to support their mutual advancement.
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135
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Li C, Liu S, Wang W, Liu W, Kuang C, Liu X. Recent research on stimulated emission depletion microscopy for reducing photobleaching. J Microsc 2018; 271:4-16. [PMID: 29600565 DOI: 10.1111/jmi.12698] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Revised: 02/23/2018] [Accepted: 02/28/2018] [Indexed: 12/11/2022]
Abstract
Stimulated emission depletion (STED) microscopy is a useful tool in investigation for super-resolution realm. By silencing the peripheral fluorophores of the excited spot, leaving only the very centre zone vigorous for fluorescence, the effective point spread function (PSF) could be immensely squeezed and subcellular structures, such as organelles, become discernable. Nevertheless, because of the low cross-section of stimulated emission and the short fluorescence lifetime, the depletion power density has to be extremely higher than the excitation power density and molecules are exposed in high risk of photobleaching. The existence of photobleaching greatly limits the research of STED in achieving higher resolution and more delicate imaging quality, as well as long-term and dynamic observation. Since the first experimental implementation of STED microscopy, researchers have lift out variety of methods and techniques to alleviate the problem. This paper would present some researches via conventional methods which have been explored and utilised relatively thoroughly, such as fast scanning, time-gating, two-photon excitation (TPE), triplet relaxation (T-Rex) and background suppression. Alternatively, several up-to-date techniques, especially adaptive illumination, would also be unveiled for discussion in this paper. The contrast and discussion of these modalities would play an important role in ameliorating the research of STED microscopy.
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Affiliation(s)
- C Li
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, China
| | - S Liu
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, China
| | - W Wang
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, China
| | - W Liu
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, China
| | - C Kuang
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, China.,Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, China
| | - X Liu
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, China.,Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, China
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136
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Sun T, Ai F, Zhu G, Wang F. Upconversion in Nanostructured Materials: From Optical Tuning to Biomedical Applications. Chem Asian J 2018; 13:373-385. [DOI: 10.1002/asia.201701660] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Indexed: 01/19/2023]
Affiliation(s)
- Tianying Sun
- Department Materials Science and Engineering; City University of Hong Kong; 83 Tat Chee Avenue Hong Kong SAR China
- City Universities of Hong Kong Shenzhen Research Institute; Shenzhen 518057 China
| | - Fujin Ai
- Department of Chemistry; City University of Hong Kong; 83 Tat Chee Avenue Hong Kong SAR China
- City Universities of Hong Kong Shenzhen Research Institute; Shenzhen 518057 China
| | - Guangyu Zhu
- Department of Chemistry; City University of Hong Kong; 83 Tat Chee Avenue Hong Kong SAR China
- City Universities of Hong Kong Shenzhen Research Institute; Shenzhen 518057 China
| | - Feng Wang
- Department Materials Science and Engineering; City University of Hong Kong; 83 Tat Chee Avenue Hong Kong SAR China
- City Universities of Hong Kong Shenzhen Research Institute; Shenzhen 518057 China
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137
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Sorbello C, Etchenique R. Intrinsic optical sectioning with upconverting nanoparticles. Chem Commun (Camb) 2018; 54:1861-1864. [DOI: 10.1039/c7cc08443a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Scanning laser upconversion microscopy yields true multiphoton sectioning power at very low excitation densities.
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Affiliation(s)
- C. Sorbello
- Departamento de Química Inorgánica
- Analítica y Química Física
- INQUIMAE
- Facultad de Ciencias Exactas y Naturales
- Universidad de Buenos Aires
| | - R. Etchenique
- Departamento de Química Inorgánica
- Analítica y Química Física
- INQUIMAE
- Facultad de Ciencias Exactas y Naturales
- Universidad de Buenos Aires
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138
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Huang K, Liu H, Kraft M, Shikha S, Zheng X, Ågren H, Würth C, Resch-Genger U, Zhang Y. A protected excitation-energy reservoir for efficient upconversion luminescence. NANOSCALE 2017; 10:250-259. [PMID: 29210408 DOI: 10.1039/c7nr06900f] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Lanthanide-doped upconversion nanoparticles (UCNPs) are of great interest for biomedical applications. Currently, the applicability of UCNP bionanotechnology is hampered by the generally low luminescence intensity of UCNPs and inefficient energy transfer from UCNPs to surface-bound chromophores used e.g. for photodynamic therapy or analyte sensing. In this work, we address the low-efficiency issue by developing versatile core-shell nanostructures, where high-concentration sensitizers and activators are confined in the core and shell region of representative hexagonal NaYF4:Yb,Er UCNPs. After doping concentration optimization, the sensitizer-rich core is able to harvest/accumulate more excitation energy and generate almost one order of magnitude higher luminescence intensity than conventional homogeneously doped nanostructures. At the same time, the activator ions located in the shell enable a ∼6 times more efficient resonant energy transfer from UCNPs to surface-bound acceptor dye molecules due to the short distance between donor-acceptor pairs. Our work provides new insights into the rational design of UCNPs and will greatly increase the general applicability of upconversion nanotechnologies.
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Affiliation(s)
- Kai Huang
- Department of Biomedical Engineering, Faculty of Engineering, National University of Singapore, 4 Engineering Drive 3, 117583 Singapore.
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139
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Wu Q, Huang B, Peng X, He S, Zhan Q. Non-bleaching fluorescence emission difference microscopy using single 808-nm laser excited red upconversion emission. OPTICS EXPRESS 2017; 25:30885-30894. [PMID: 29245768 DOI: 10.1364/oe.25.030885] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Accepted: 11/20/2017] [Indexed: 06/07/2023]
Abstract
Optical super-resolution microscopy has become a powerful technique to help scientists to monitor the sample of interest at nanoscale. Fluorescence emission difference (FED) microscopy, a very facile super-resolution method, does not require high depleting laser intensity and is independent on the species of agents, which makes FED microscopy possess great potential. However, to date, the biomarkers applied in FED microscopy usually suffer from a photo-bleaching problem. In this work, by introducing Er3+ activated upconverting nanoparticles with red-color emission and non-photobleaching properties, we demonstrate nonbleaching super-resolution imaging with FED microscopy. The dopant neodymium ions (Nd3+) can work as highly efficient sensitizing ions and enable near infrared 808-nm CW laser excitation of relatively low power, which would potentially reduce high intensity/short-wavelength light induced tissue damage. Both simulations and experiments on monodispersed NaYF4:Nd3+/Yb3+/Er3+@NaYF4:Nd3+ UCNPs also indicate that the easy saturation of the multiphoton properties of these UCNPs is beneficial to resolution enhancement in FED microscopy.
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