1
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Zhao CX, Li XX, Shu Y. Fluorescence of europium activated by molecular-like silver clusters for the detection of alkaline phosphatase activity. Talanta 2024; 281:126892. [PMID: 39298805 DOI: 10.1016/j.talanta.2024.126892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2024] [Revised: 08/31/2024] [Accepted: 09/13/2024] [Indexed: 09/22/2024]
Abstract
Alkaline phosphatase (ALP) is abnormally expressed in some cancers and promotes the growth, metastasis, and invasion of cancer cells. The detection of ALP is of great significance for both pathological study and clinical detection. In this work, a europium (Eu)-based fluorescence detection sensor was prepared in a mild reaction condition. LaF3:Eu nanoparticles was mixed with ethylene imine polymer (PEI) and Ag+ ions. PEI was used as stabilizer and reducing agent, and Ag+ ions were reduced as molecular-like silver clusters (ML-Ag NCs). The fluorescence of LaF3:Eu nanoparticles was enhanced by ML-Ag NCs through energy transfer. When ascorbic acid 2-phosphate (AAP) was hydrolyzed to ascorbic acid (AA) in the presence of ALP, AA reduced Ag+ ions to silver nanoparticles (Ag NPs) and quenched the fluorescence of LaF3:Eu/PEI/Ag. The activity of ALP was detected by measuring the fluorescence intensity of Eu3+ at 618 nm. In the concentration range from 2.0 to 16.0 U/L, the fluorescence intensity ratio ((F0-F)/F0) had a linear relationship with the logarithm of ALP concentration. The limit of detection (LOD) was 1.3 U/L. Moreover, the ALP activity was detected successfully in cancer cells by this method. The sensing platform has application potential in the detection of ALP activity in biological systems.
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Affiliation(s)
- Chen-Xi Zhao
- Department of Chemistry, College of Sciences, Northeastern University, Shenyang, 110819, China
| | - Xiao-Xia Li
- Department of Chemistry, College of Sciences, Northeastern University, Shenyang, 110819, China
| | - Yang Shu
- Department of Chemistry, College of Sciences, Northeastern University, Shenyang, 110819, China.
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2
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Zhao Q, Tian X, Ren L, Su Y, Su Q. Understanding of Lanthanide-Doped Core-Shell Structure at the Nanoscale Level. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:1063. [PMID: 38921939 PMCID: PMC11206442 DOI: 10.3390/nano14121063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2024] [Revised: 06/11/2024] [Accepted: 06/18/2024] [Indexed: 06/27/2024]
Abstract
The groundbreaking development of lanthanide-doped core-shell nanostructures have successfully achieved precise optical tuning of rare-earth nanocrystals, leading to significant improvements in energy transfer efficiency and facilitating multifunctional integration. Exploring the atomic-level structural, physical, and optical properties of rare-earth core-shell nanocrystals is essential for advancing our understanding of their fundamental principles and driving the development of emerging applications. However, our knowledge of the atomic-level structural details of rare-earth nanocrystal core-shell structures remains limited. This review provides a comprehensive discussion of synthesis strategies, characterization techniques, interfacial ion-mixing phenomena, strain effects, and spectral modulation in core-shell structures of rare-earth-doped nanocrystals. Additionally, we prospectively discuss the challenges encountered in studying the fine structures of rare-earth-doped core-shell nanocrystals, particularly the increasing demand for researchers to integrate interdisciplinary knowledge and utilize high-end precision instruments.
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Affiliation(s)
- Qing Zhao
- Institute of Nanochemistry and Nanobiology, Shanghai University, Shanghai 200444, China
| | - Xinle Tian
- Institute of Nanochemistry and Nanobiology, Shanghai University, Shanghai 200444, China
| | - Langtao Ren
- Institute of Nanochemistry and Nanobiology, Shanghai University, Shanghai 200444, China
| | - Yan Su
- Genome Institute of Singapore, Agency of Science Technology and Research, Singapore 138672, Singapore
| | - Qianqian Su
- Institute of Nanochemistry and Nanobiology, Shanghai University, Shanghai 200444, China
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3
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Gao C, Song Z, Li Y, Han Y, Wei T. Achieving Multicolor Upconversion Emissions without Changing Compositions. J Fluoresc 2022; 32:1679-1684. [PMID: 35665470 DOI: 10.1007/s10895-022-02963-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 04/25/2022] [Indexed: 10/18/2022]
Abstract
It is widely recognized that a proper way of adjusting fluorescence color is meaningful for pushing forward upconversion materials to be utilized in anti-counterfeiting, display and solid-state lightning applications. Traditional routes that apply different host materials and/or doping categories to adjust fluorescence color have shown large color region tunability yet have to rely on complex synthesis process accompanied with time and raw material consumption. In this work, in order to get a wide luminous color gamut without depending on reciprocating synthesis, we desinged and provided a high-sensitizer-concentration upconversion crystals, hexagonal NaLuF4:Yb3+/Er3+ (50/2 mol%), whose red-to-green emission intensity ratio can be conveniently tuned from 2.69 to 4.96 by simply modulating excitation power densities. The promoted three-photon-population progress of red emission achieved by using an intensive excitation laser is considered to be responsible for the facile upconversion modulation. The results may provide new ideas for emission color control that based on external parameters in identical host and the greatly amplified excitation power-sensitivity of NaLuF4:Yb3+/Er3+ (50/2 mol%) is highly potential for fluorescence anti-fake and colorful display applications.
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Affiliation(s)
- Chao Gao
- School of Inspection and Testing Certification, Changzhou Vocational Institute of Engineering, 213164, Changzhou, China
| | - Zhiqian Song
- School of Inspection and Testing Certification, Changzhou Vocational Institute of Engineering, 213164, Changzhou, China
| | - Yingxue Li
- School of Inspection and Testing Certification, Changzhou Vocational Institute of Engineering, 213164, Changzhou, China
| | - Yingdong Han
- College of Science, Civil Aviation University of China, 300300, Tianjin, China.
| | - Tian Wei
- Jiangsu New Horizon Advanced Functional Fiber Innovation Center Co., LTD, 215228, Suzhou, China
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4
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Selective detection of iron (III) using salicylic acid capped Tb3+-doped CaF2 colloidal nanoparticles. J INDIAN CHEM SOC 2022. [DOI: 10.1016/j.jics.2022.100452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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5
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Bai Y, Liu X, Zhang S, Jiang H, Liu L, Din IU, Zhang J. Suppression of inner energy dissipation in Yb-doped NaErF4 upconversion nanocrystals through an energy cycling strategy. J RARE EARTH 2022. [DOI: 10.1016/j.jre.2022.05.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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6
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Dubey N, Chandra S. Upconversion nanoparticles: Recent strategies and mechanism based applications. J RARE EARTH 2022. [DOI: 10.1016/j.jre.2022.04.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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7
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Premcheska S, Lederer M, Kaczmarek AM. The importance, status, and perspectives of hybrid lanthanide-doped upconversion nanothermometers for theranostics. Chem Commun (Camb) 2022; 58:4288-4307. [PMID: 35258046 DOI: 10.1039/d1cc07164e] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Theranostics combines diagnostics and therapy in a single multifunctional system. Multifunctional upconversion luminescent lanthanide-doped nanothermometers for theranostic purposes offer non-invasive and sensitive multimodal performance in the biomedical field over traditional temperature measurement methods. Despite existing challenges, various studies on hybrid upconversion nanothermometers show substantial progress for (bio)imaging, temperature sensing, photodynamic and photothermal therapy, as well as drug delivery applications. The beauty of such an approach is that it unfolds possibilities to combine diagnostics and therapy in a single particle, which can modify the way certain diseases are treated, hence change the entire healthcare scene.
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Affiliation(s)
- Simona Premcheska
- NanoSensing Group, Department of Chemistry, Ghent University, Krijgslaan 281-S3, 9000 Ghent, Belgium.
| | - Mirijam Lederer
- NanoSensing Group, Department of Chemistry, Ghent University, Krijgslaan 281-S3, 9000 Ghent, Belgium.
| | - Anna M Kaczmarek
- NanoSensing Group, Department of Chemistry, Ghent University, Krijgslaan 281-S3, 9000 Ghent, Belgium.
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8
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Yeow E, Wu X. Exploiting the upconversion luminescence, Lewis acid catalytic and photothermal properties of lanthanide-based nanomaterials for chemical and polymerization reactions. Phys Chem Chem Phys 2022; 24:11455-11470. [DOI: 10.1039/d2cp00560c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Lanthanide-based nanocrystals possess three unique physical properties that make them attractive for facilitating photoreactions, namely photon upconversion, Lewis acid catalytic activity and photothermal effect. When co-doped with suitable sensitizer and...
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9
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Qin X, Liu X. First-principles calculations of strain engineering in NaYF 4-based nanocrystals with hydroxyl impurities. NANOSCALE 2021; 13:19561-19567. [PMID: 34807210 DOI: 10.1039/d1nr06904g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Lanthanide-based nanocrystals with heterogeneous core-shell structures possess elastic strain due to lattice mismatch and volumetric expansion or shrinkage. Strain relaxation is usually accompanied by lattice defects, especially those point defects and small defect clusters. However, the influence of strain on the formation of lattice defects remains unclear. Using OH- ions as a representative lattice impurity, first-principles calculations can be used to address the correlation between the thermodynamic stability of OH-based substitutional defects and elastic strain. Moreover, the concentration of OH- impurities in both strained and relaxed sodium yttrium fluoride lattices can be greatly reduced by increasing the concentration of fluoride-containing precursors. These findings suggest that minimal incorporation of OH- ions effectively suppresses multiphonon nonradiative relaxation and thus boost the efficiency of upconversion conversion.
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Affiliation(s)
- Xian Qin
- Department of Chemistry, National University of Singapore, Singapore 117543.
| | - Xiaogang Liu
- Department of Chemistry, National University of Singapore, Singapore 117543.
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10
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Influence of Terbium Ions and Their Concentration on the Photoluminescence Properties of Hydroxyapatite for Biomedical Applications. NANOMATERIALS 2021; 11:nano11092442. [PMID: 34578759 PMCID: PMC8466322 DOI: 10.3390/nano11092442] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 09/13/2021] [Accepted: 09/16/2021] [Indexed: 12/14/2022]
Abstract
A new generation of biomaterials with terbium-doped hydroxyapatite was obtained using a coprecipitation method. The synthesis of new materials with luminescent properties represents a challenging but important contribution due to their potential applications in biomedical science. The main objective of this study was to revel the influence of terbium ions on the design and structure of hydroxyapatite. Different concentrations of terbium, described by the chemical formula Ca10−xTbx(PO4)6(OH)2, where x is in the range of 0 to 1, were considered. The consequence of ion concentration on hydroxyapatite morphology was also investigated. The morphology and structure, as well as the optical properties, of the obtained nanomaterials were characterized using X-ray powder diffraction analysis (XRD), Fourier Transform Infrared spectrometry (FTIR), SEM and TEM microscopy, UV-Vis and photoluminescence spectroscopies. The measurements revealed that terbium ions were integrated into the structure of hydroxyapatite within certain compositional limits. The biocompatibility and cytotoxicity of the obtained powders evaluated using MTT assay, oxidative stress assessment and fluorescent microscopy revealed the ability of the synthesized nanomaterials to be used for biological system imaging.
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11
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Jaiswal S, Kundu S, Bandyopadhyay S, Patra A. A hybrid upconversion nanoprobe for ratiometric detection of aliphatic biogenic amines in aqueous medium. NANOSCALE ADVANCES 2021; 3:3232-3239. [PMID: 36133671 PMCID: PMC9419630 DOI: 10.1039/d0na00995d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Accepted: 04/01/2021] [Indexed: 05/28/2023]
Abstract
We fabricated an inorganic-organic hybrid upconversion nanoprobe for the ratiometric detection of aliphatic biogenic amines in water. The hybrid nanoprobe comprises a thiophene-based acceptor-π-donor-π-acceptor organic fluorescent dye, TDPM, and near-infrared light-absorbing upconversion nanoparticles (UCNPs). The organic dye was loaded into a mesoporous silica-coated UCNP (UCNP@mSiO2) matrix to circumvent the issues of water insolubility and higher energy excitation. Yb3+ and Tm3+-doped UCNPs exhibited dual emission bands at 475 and 645 nm upon excitation with a 980 nm laser. The significant spectral overlap between the absorption and the emission bands of TDPM and UCNPs, respectively, at 475 nm led to resonance energy transfer (RET) from the UCNPs to TDPM resulting in the quenching of the UCNP emission. In contrast, 'turn-on' emission was noticeable with the addition of aliphatic biogenic amines due to an inhibition of the RET. The emission at 645 nm remained unaffected during the energy transfer process making the hybrid probe a versatile platform for the ratiometric detection of different aliphatic biogenic amines. Furthermore, we explored the sensing of aliphatic biogenic amines in adulterated milk and rotten fish. The unique material attributes demonstrated in the current study hold promise for further development of real-time sensors and switches based on hybrid upconversion nanoprobes.
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Affiliation(s)
- Shilpi Jaiswal
- Department of Chemistry, Indian Institute of Science Education and Research, Bhopal Bhopal Bypass Road, Bhauri Bhopal 462066 Madhya Pradesh India
| | - Subhankar Kundu
- Department of Chemistry, Indian Institute of Science Education and Research, Bhopal Bhopal Bypass Road, Bhauri Bhopal 462066 Madhya Pradesh India
| | - Sujoy Bandyopadhyay
- Department of Chemistry, Indian Institute of Science Education and Research, Bhopal Bhopal Bypass Road, Bhauri Bhopal 462066 Madhya Pradesh India
| | - Abhijit Patra
- Department of Chemistry, Indian Institute of Science Education and Research, Bhopal Bhopal Bypass Road, Bhauri Bhopal 462066 Madhya Pradesh India
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12
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Wang Y, Low J, Bi Y, Bai Y, Chen Y, Long R, Xiong Y. Transparent and flexible resins functionalized by lanthanide-based upconversion nanocrystals. Dalton Trans 2021; 50:6432-6436. [PMID: 33949533 DOI: 10.1039/d1dt00786f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Functional resins with optical adjustment capability own great potential in multiple application scenarios. To this end, we functionalize resins with upconversion nanocrystals (UCNCs), namely an UCNC-Au composite structure, to endow them with the unique ability of converting near-infrared (NIR) radiation into visible-light emission. Such UCNC-functionalized resins with high transparency and flexibility are expected to accelerate the development in the comprehensive utilization of NIR during practical applications.
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Affiliation(s)
- Yao Wang
- Hefei National Laboratory for Physical Sciences at the Microscale, Frontiers Science Center for Planetary Exploration and Emerging Technologies, National Synchrotron Radiation Laboratory, and School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China.
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13
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Synthesis, optical properties and toxic potentiality of photoluminescent lanthanum oxide nanospheres. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125511] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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14
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Hasegawa M, Ishii A. Thin-film formation for promoting the potential of luminescent lanthanide coordination complexes. Coord Chem Rev 2020. [DOI: 10.1016/j.ccr.2020.213458] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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15
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Li Y, Liu C, Zhang P, Huang J, Ning H, Xiao P, Hou Y, Jing L, Gao M. Doping Lanthanide Nanocrystals With Non-lanthanide Ions to Simultaneously Enhance Up- and Down-Conversion Luminescence. Front Chem 2020; 8:832. [PMID: 33173764 PMCID: PMC7538674 DOI: 10.3389/fchem.2020.00832] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Accepted: 08/07/2020] [Indexed: 11/13/2022] Open
Abstract
The rare-earth nanocrystals containing Er3+ emitters offer very promising tools for imaging applications, as they can not only exhibit up-conversion luminescence but also down-conversion luminescence in the second near-infrared window (NIR II). Doping non-lanthanide cations into host matrix was demonstrated to be an effective measure for improving the luminescence efficiency of Er3+ ions, while still awaiting in-depth investigations on the effects of dopants especially those with high valence states on the optical properties of lanthanide nanocrystals. To address this issue, tetravalent Zr4+ doped hexagonal NaGdF4:Yb,Er nanocrystals were prepared, and the enhancement effects of the Zr4+ doping level on both up-conversion luminescence in the visible window and down-conversion luminescence in NIR II window were investigated, with steady-state and transient luminescence spectroscopies. The key role of the local crystal field distortions around Er3+ emitters was elucidated in combination with the results based on both of Zr4+ and its lower valence counterparts, e.g., Sc3+, Mg2+, Mn2+. Univalent ions such as Li+ was utilized to substitute Na+ ion rather than Gd3+, and the synergistic effects of Zr4+ and Li+ ions by co-doping them into NaGdF4:Yb,Er nanocrystals were investigated toward optimal enhancement. Upon optimization, the up-conversion emission of co-doped NaGdF4:Yb,Er nanocrystals was enhanced by more than one order of magnitude compared with undoped nanocrystals. The current studies thus demonstrate that the local crystal field surrounding emitters is an effective parameter for manipulating the luminescence of lanthanide emitters.
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Affiliation(s)
- Yingying Li
- Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, China.,School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing, China
| | - Chunyan Liu
- Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, China
| | - Peisen Zhang
- Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, China.,School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing, China
| | - Jiayi Huang
- Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, China.,School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing, China
| | - Haoran Ning
- Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, China.,School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing, China
| | - Peng Xiao
- Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, China.,School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing, China
| | - Yi Hou
- Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, China
| | - Lihong Jing
- Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, China
| | - Mingyuan Gao
- Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, China.,School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing, China.,Center for Molecular Imaging and Nuclear Medicine, School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, and State Key Laboratory of Radiation Medicine and Protection, Soochow University, Suzhou, China
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16
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Qu Z, Shen J, Li Q, Xu F, Wang F, Zhang X, Fan C. Near-IR emissive rare-earth nanoparticles for guided surgery. Theranostics 2020; 10:2631-2644. [PMID: 32194825 PMCID: PMC7052904 DOI: 10.7150/thno.40808] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Accepted: 11/01/2019] [Indexed: 12/11/2022] Open
Abstract
Intraoperative image-guided surgery (IGS) has attracted extensive research interests in determination of tumor margins from surrounding normal tissues. Introduction of near infrared (NIR) fluorophores into IGS could significantly improve the in vivo imaging quality thus benefit IGS. Among the reported NIR fluorophores, rare-earth nanoparticles exhibit unparalleled advantages in disease theranostics by taking advantages such as large Stokes shift, sharp emission spectra, and high chemical/photochemical stability. The recent advances in elements doping and morphologies controlling endow the rare-earth nanoparticles with intriguing optical properties, including emission span to NIR-II region and long life-time photoluminescence. Particularly, NIR emissive rare earth nanoparticles hold advantages in reduction of light scattering, photon absorption and autofluorescence, largely improve the performance of nanoparticles in biological and pre-clinical applications. In this review, we systematically compared the benefits of RE nanoparticles with other NIR probes, and summarized the recent advances of NIR emissive RE nanoparticles in bioimaging, photodynamic therapy, drug delivery and NIR fluorescent IGS. The future challenges and promises of NIR emissive RE nanoparticles for IGS were also discussed.
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Affiliation(s)
- Zhibei Qu
- Joint Research Center for Precision Medicine, Shanghai Jiao Tong University & Affiliated Sixth People's Hospital South Campus, Southern Medical University Affiliated Fengxian Hospital, Shanghai 201499, China
- School of Chemistry and Chemical Engineering, and Institute of Molecular Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jianlei Shen
- School of Chemistry and Chemical Engineering, and Institute of Molecular Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Qian Li
- School of Chemistry and Chemical Engineering, and Institute of Molecular Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Feng Xu
- Joint Research Center for Precision Medicine, Shanghai Jiao Tong University & Affiliated Sixth People's Hospital South Campus, Southern Medical University Affiliated Fengxian Hospital, Shanghai 201499, China
| | - Fei Wang
- Joint Research Center for Precision Medicine, Shanghai Jiao Tong University & Affiliated Sixth People's Hospital South Campus, Southern Medical University Affiliated Fengxian Hospital, Shanghai 201499, China
- School of Chemistry and Chemical Engineering, and Institute of Molecular Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Xueli Zhang
- Joint Research Center for Precision Medicine, Shanghai Jiao Tong University & Affiliated Sixth People's Hospital South Campus, Southern Medical University Affiliated Fengxian Hospital, Shanghai 201499, China
| | - Chunhai Fan
- School of Chemistry and Chemical Engineering, and Institute of Molecular Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200240, China
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17
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Li M, Takei T, Zhu Q, Kim BN, Li JG. Morphology Tailoring of ZnWO4 Crystallites/Architectures and Photoluminescence of the Doped RE3+ Ions (RE = Sm, Eu, Tb, and Dy). Inorg Chem 2019; 58:9432-9442. [PMID: 31241327 DOI: 10.1021/acs.inorgchem.9b01271] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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18
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Wang Y, Zhu Y, Sun P, Liu J, Zhu N, Tang J, Wong PK, Fan H, Wu Y. Augmenting nitrogen removal by periphytic biofilm strengthened via upconversion phosphors (UCPs). BIORESOURCE TECHNOLOGY 2019; 274:105-112. [PMID: 30502600 DOI: 10.1016/j.biortech.2018.11.079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 11/20/2018] [Accepted: 11/22/2018] [Indexed: 06/09/2023]
Abstract
The application of periphytic biofilm in removing nitrogen from water is limited by the fluctuating nitrogen concentration. Here, we delineate a novel approach to enhance periphytic biofilm performance in nitrogen removal via upconversion luminescence of upconversion phosphors (UCPs). Nitrogen removal rates (14 d) in high nitrogen wastewater (26 mg/L) were significantly improved to 58.6% and 61.4% by UCPs doped with Pr3+ and Li+ and UCPs doped with Pr3+, respectively, and to 95.1% and 95.9% in low nitrogen surface water (2 mg/L), respectively. The stimulation of UCPs optimized the microbial community structure in the periphytic biofilms, and also resulted in good acclimation to use different carbon sources. The enhanced synergic action of cyanobacterial biomass, ratio of Gram +ve to Gram -ve bacteria and carbon source metabolic capacity contributed to the improved nitrogen removal. This novel approach is promising in nitrogen removal from wastewater and surface water with fluctuating initial nitrogen concentration.
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Affiliation(s)
- Yu Wang
- School of Resources, Environmental & Chemical Engineering and Key Laboratory of Poyang Lake Environment and Resource Utilization, Nanchang University, Nanchang, China; Zigui Ecological Station for Three Gorges Dam Project, State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Sciences, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing 210008, China
| | - Yan Zhu
- Zigui Ecological Station for Three Gorges Dam Project, State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Sciences, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing 210008, China; College of Resource and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Pengfei Sun
- Zigui Ecological Station for Three Gorges Dam Project, State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Sciences, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing 210008, China
| | - Junzhuo Liu
- Zigui Ecological Station for Three Gorges Dam Project, State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Sciences, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing 210008, China
| | - Ningyuan Zhu
- Zigui Ecological Station for Three Gorges Dam Project, State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Sciences, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing 210008, China; College of Resource and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jun Tang
- Zigui Ecological Station for Three Gorges Dam Project, State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Sciences, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing 210008, China.
| | - Po Keung Wong
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, NT, Hong Kong Special Administrative Region
| | - Hua Fan
- School of Resources, Environmental & Chemical Engineering and Key Laboratory of Poyang Lake Environment and Resource Utilization, Nanchang University, Nanchang, China
| | - Yonghong Wu
- Zigui Ecological Station for Three Gorges Dam Project, State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Sciences, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing 210008, China
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19
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Mesoporous multi-silica layer-coated Y 2O 3:Eu core-shell nanoparticles: Synthesis, luminescent properties and cytotoxicity evaluation. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 96:365-373. [PMID: 30606544 DOI: 10.1016/j.msec.2018.11.046] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2018] [Revised: 10/21/2018] [Accepted: 11/26/2018] [Indexed: 11/23/2022]
Abstract
Mesoporous multi-layered silica-coated luminescent Y2O3:Eu nanoparticles (NPs) were prepared by a urea-based decomposition process, and their surfaces were gradually modified with nanoporous and mesoporous silica layers using modified sol-gel methods. The synthesized luminescent core-shell NPs were characterized thoroughly to investigate their structural, morphological, thermal, optical, photo luminescent properties and their surface chemistry. The morphology of the core NPs were nearly spherical in shape and were nano-sized grains. The observed luminescent efficiency of the mesoporous multi-layered silica-coated luminescent core NPs was gradually reduced because of bond formation between the Y2O3:Eu core and the amorphous silica shell via YOSiOH bridges on the surface of the NPs; the bonds suppressed the non-radiative transition pathways. Biocompatibility tests on Human breast cancer cells using the 3‑(4,5‑Dimethylthiazol‑2‑yl)‑2,5‑diphenyltetrazolium bromide and lactate dehydrogenase assays indicated that the core-shell NPs were non-toxic even at high concentrations. The mesoporous SiO2 layer played a key role in perfecting the solubility, biocompatibility, and non-toxicity of the NPs. The zeta potential, surface chemistry (Fourier transform infrared spectroscopy), and optical absorption spectral analyses revealed the high hydrophilicity of the as-prepared core-shell NPs because of the active surface-functionalized silanol (SiOH) groups, which could potentially offer many exciting opportunities in photonic-based biomedical applications.
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Zhao T, Chen L, Li Q, Li X. Near-infrared light triggered drug release from mesoporous silica nanoparticles. J Mater Chem B 2018; 6:7112-7121. [PMID: 32254627 DOI: 10.1039/c8tb01548a] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Stimuli triggered drug delivery systems enable controlled release of drugs at the optimal space and time, thus achieving optimal therapeutic effects. As one of the most important stimuli used in bioapplications, near-infrared (NIR) light possesses unique advantages such as deep tissue penetration with minimum auto-fluorescence & tissue scattering and high biosafety. Mesoporous silica nanoparticles (MSNs) are one of the most studied nanocarriers; apart from having a high surface area and large pore volume for loading of drugs, they can be easily functionalized with inorganic nanomaterials and stimuli responsive polymers or organic switch molecules, creating possibilities for designing complex stimuli triggered drug delivery systems. Considering the high tissue penetration depth of NIR light and the unique mesoporous structure of MSNs, NIR responsive inorganic nanoparticle functionalized MSNs can be further combined with stimuli responsive materials to form smart "nano-devices" for controlled drug delivery toward tumors, and to date much progress has been made. In this article, recent advances in the design of NIR triggered mesoporous silica drug delivery systems are systematically summarized and some outstanding studies are highlighted. We will also discuss the shortcomings, challenges and opportunities in the field.
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Affiliation(s)
- Tiancong Zhao
- Laboratory of Advanced Materials, State Key Laboratory of Molecular Engineering of Polymers, Collaborative Innovation Center of Chemistry for Energy Materials (2011-iChEM), Fudan University, Shanghai 200433, P. R. China.
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Tan L, Ke X, Song X, Yin Q, Qiao R, Guo K, Zhu L. Double-layered core–shell structure of NaYF 4 :Yb,Er@SiO 2 @Zn 1−x Mn x O for near-infrared-triggered photodegradation and antibacterial application. J IND ENG CHEM 2018. [DOI: 10.1016/j.jiec.2017.11.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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22
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Ansari AA. Silica-modified luminescent LaPO 4 :Eu@LaPO 4 @SiO 2 core/shell nanorods: Synthesis, structural and luminescent properties. LUMINESCENCE 2018. [PMID: 28816400 DOI: 10.1016/j.solidstatesciences.2017.07.012] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/17/2023]
Abstract
Monoclinic-type tetragonal LaPO4 :Eu (core) and LaPO4 :Eu@LaPO4 (core/shell) nanorods (NRs) were successfully prepared using a urea-based co-precipitation process under ambient conditions. An amorphous silica layer was coated around the luminescent core/shell NRs via the sol-gel process to improve their solubility and colloidal stability in aqueous and non-aqueous media. The prepared nano-products were systematically characterized by X-ray diffraction pattern, transmission electron microscopy, energy dispersive X-ray analysis, and FTIR, UV/Vis, and photoluminescence spectroscopy to examine their phase purity, crystal phase, surface chemistry, solubility and luminescence characteristics. The length and diameter of the nano-products were in the range 80-120 nm and 10-15 nm, respectively. High solubility of the silica-modified core/shell/Si NRs was found for the aqueous medium. The luminescent core NRs exhibited characteristic excitation and emission transitions in the visible region that were greatly affected by surface growth of insulating LaPO4 and silica layers due to the multiphonon relaxation rate. Our luminescence spectral results clearly show a distinct difference in intensities for core, core/shell, and core/shell/Si NRs. Highly luminescent NRs with good solubility could be useful candidates for a variety of photonic-based biomedical applications.
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Affiliation(s)
- Anees A Ansari
- King Abdullah Institute for Nanotechnology, King Saud University, Riyadh, Kingdom of Saudi Arabia
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23
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Tao F, Zhang Z, Chen J, Wang Z, Sun Y. Synthesis and enhancement luminescence of 3D NaReF 4 (Re = Eu, Sm) hierarchical microstructures assembled by nanosheets. CrystEngComm 2018. [DOI: 10.1039/c7ce01817g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
A one-step hydrothermal strategy has been developed to fabricate 3D flower-like hierarchical microstructures assembled by hexagonal NaReF4 nanosheets.
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Affiliation(s)
- Feng Tao
- Department of Materials Science and Engineering
- Anhui Polytechnic University
- Wuhu
- China
| | - Zhihua Zhang
- Department of Materials Science and Engineering
- Anhui Polytechnic University
- Wuhu
- China
| | - Jun Chen
- Department of Materials Science and Engineering
- Anhui Polytechnic University
- Wuhu
- China
| | - Zhijun Wang
- Department of Materials Science and Engineering
- Anhui Polytechnic University
- Wuhu
- China
| | - Yufeng Sun
- Department of Materials Science and Engineering
- Anhui Polytechnic University
- Wuhu
- China
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Teng B, Han Y, Zhang X, Xiao H, Yu C, Li H, Cheng Z, Jin D, Wong KL, Ma P, Lin J. Phenanthriplatin(iv) conjugated multifunctional up-converting nanoparticles for drug delivery and biomedical imaging. J Mater Chem B 2018; 6:5059-5068. [DOI: 10.1039/c8tb01034j] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Platinum-based drugs cisplatin, carboplatin, and oxaliplatin are widely used in the clinical treatment of cancer.
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25
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Ansari AA. Facile Synthesis Method for the Preparation of Large-scale Ultra-small GdPO4
:Tb and GdPO4
:Tb@LaPO4
Nanowires. J CHIN CHEM SOC-TAIP 2017. [DOI: 10.1002/jccs.201700317] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Anees A. Ansari
- King Abdullah Institute for Nanotechnology; King Saud University; Riyadh 11451 Saudi Arabia
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26
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Ansari AA. Role of surface modification on physicochemical properties of luminescent YPO4:Tb nanorods. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.05.028] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Resch-Genger U, Gorris HH. Perspectives and challenges of photon-upconversion nanoparticles - Part I: routes to brighter particles and quantitative spectroscopic studies. Anal Bioanal Chem 2017; 409:5855-5874. [DOI: 10.1007/s00216-017-0499-z] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Revised: 05/29/2017] [Accepted: 06/27/2017] [Indexed: 12/31/2022]
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28
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Ansari AA, Aldalbahi AK, Labis JP, Manthrammel MA. Impact of surface coating on physical properties of europium-doped gadolinium fluoride microspheres. J Fluor Chem 2017. [DOI: 10.1016/j.jfluchem.2017.03.015] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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Ansari AA, Yadav R, Rai SB. Physiochemical properties of greatly enhanced photoluminescence of aqueous dispersible upconversion CaF 2:Yb/Er nanoparticles. Photochem Photobiol Sci 2017; 16:890-896. [PMID: 28382337 DOI: 10.1039/c6pp00448b] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Crystal phase morphological structure and optical properties of the as-prepared upconversion CaF2:Yb/Er(core) and sequential coating of an inert crystalline material and silica layers surrounding the seed core-nanoparticles (NPs) were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), selected area electron diffraction (SAED), optical absorption, FTIR spectroscopy and upconversion photoluminescence spectroscopy. Owing to the unique properties of CaF2 host matrix, we realized their practical applications in biomedical science to improve the upconversion luminescence property and aqueous dispersibility. The surface coating on the seed core particles will significantly influence the structural, optical band gap energy and upconversion luminescence properties. These NPs were well-dispersed in aqueous and non-aqueous solvents to form clear colloidal solutions. The colloidal solutions of three samples show a characteristic optical absorption band in UV/Visible region. As a result, optical band gap gradually decreases after sequential growth of the inert shell and amorphous silica due to an increase in the crystalline size. Comparative upconversion luminescence analysis showed that after inert shell growth, the upconversion intensity was greatly improved, and such an improvement was found to arise from efficient suppression of surface-related deactivation from the core nanocrystals. Interestingly, growth of an inert (CaF2) shell over the seed core NPs shows intense upconversion emission lines under 980 nm NIR laser excitation, highlighting their promising applications, such as multi-analyte biolabels, staining, displays and other photonic based technological applications.
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Affiliation(s)
- Anees A Ansari
- King Abdullah Institute for Nanotechnology, King Saud University, Riyadh-11451, Saudi Arabia.
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30
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Cheng Y, Sun K. Upconversion photoluminescence of core-shell structured SiO 2@YVO 4:Yb 3+, Er 3+, Eu 3+ nanospheres. APPLIED OPTICS 2017; 56:4905-4910. [PMID: 29047633 DOI: 10.1364/ao.56.004905] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Accepted: 05/10/2017] [Indexed: 06/07/2023]
Abstract
Core-shell structured SiO2@YVO4:Yb3+, Er3+, Eu3+ nanospheres were prepared by a simple solgel method followed by a subsequent heat treatment. The as-prepared composites were characterized by a scanning electron microscope, high-resolution transmission electron microscope, x-ray diffraction, and photoluminescence spectra. The influences of different coating numbers were also studied. To sum up, the composites are spherical shaped with an average diameter of 200 nm, and the YVO4:Yb3+, Er3+, Eu3+ luminescent particles are successfully coated on the surface of SiO2 nanospheres. Under the near-infrared irradiation at 980 nm, the composites can emit strong green lights (at 525 nm, 550 nm) attributed to the H11/22→I15/24, S3/24→I15/24 transitions of Er3+ ions, and slight red lights (at 590 nm, 620 nm) attributed to the D05→F17, D05→F27 transitions of Eu3+ ions. Given the above, due to the regular core-shell structure, the uniform distribution of nanoparticles, and the colorful emissions, the SiO2@YVO4:Yb3+, Er3+, Eu3+ nanospheres may have great potential for some biological applications, such as biological tracers, bio-labeling, and so on.
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31
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Ansari AA. Comparative Structural, Optical, and Photoluminescence Studies of YF3
:Pr, YF3
:Pr@LaF3
, and YF3
:Pr@LaF3
@SiO2
Core-Shell Nanocrystals. J CHIN CHEM SOC-TAIP 2017. [DOI: 10.1002/jccs.201700015] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Anees A. Ansari
- King Abdullah Institute for Nanotechnology; King Saud University; Riyadh 11451 Saudi Arabia
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32
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Singh P, Shahi PK, Singh SK, Singh AK, Singh MK, Prakash R, Rai SB. Lanthanide doped ultrafine hybrid nanostructures: multicolour luminescence, upconversion based energy transfer and luminescent solar collector applications. NANOSCALE 2017; 9:696-705. [PMID: 27957570 DOI: 10.1039/c6nr07250j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We herein demonstrate novel inorganic-organic hybrid nanoparticles (HNPs) composed of inorganic NPs, NaY0.78Er0.02Yb0.2F4, and an organic β-diketonate complex, Eu(TTA)3Phen, for energy harvesting applications. Both the systems maintain their core integrity and remain entangled through weak interacting forces. HNPs incorporate the characteristic optical behaviour of both the systems i.e. they give an intense red emission under UV excitation, due to Eu3+ in organic complexes, and efficient green upconversion emission of Er3+ in inorganic NPs for NIR (980 nm) excitation. However, (i) an energy transfer from Er3+ (inorganic NPs) to Eu3+ (organic complex) under NIR excitation, and (ii) an increase in the decay time of 5D0 → 7F2 transition of Eu3+ for HNPs as compared to the Eu(TTA)3Phen complex, under different excitation wavelengths, are added optical characteristics which point to an important role of the interface between both the systems. Herein, the ultra-small size (6-9 nm) and spherical shape of the inorganic NPs offer a large surface area, which improves the weak interaction force between both the systems. Furthermore, the HNPs dispersed in the PMMA polymer have been successfully utilized for luminescent solar collector (LSC) applications.
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Affiliation(s)
- Priyam Singh
- Department of Physics, Banaras Hindu University, Varanasi-221005, India
| | | | - Sunil Kumar Singh
- Department of Physics, Indian Institute of Technology (Banaras Hindu University), Varanasi-221005, India.
| | | | - Manish Kumar Singh
- School of Materials Science and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi-221005, India
| | - Rajiv Prakash
- School of Materials Science and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi-221005, India
| | - Shyam Bahadur Rai
- Department of Physics, Banaras Hindu University, Varanasi-221005, India
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Xu J, Sun M, Kuang Y, Bi H, Liu B, Yang D, Lv R, Gai S, He F, Yang P. Markedly enhanced up-conversion luminescence by combining IR-808 dye sensitization and core–shell–shell structures. Dalton Trans 2017; 46:1495-1501. [DOI: 10.1039/c6dt04529d] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The up-conversion emission of core–shell–shell structured nanoparticles has been greatly enhanced by IR-808 dye sensitization of 808 nm photons.
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Ansari AA, Parchur AK, Kumar B, Rai SB. Highly aqueous soluble CaF 2:Ce/Tb nanocrystals: effect of surface functionalization on structural, optical band gap, and photoluminescence properties. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2016; 27:178. [PMID: 27752975 DOI: 10.1007/s10856-016-5791-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Accepted: 10/05/2016] [Indexed: 06/06/2023]
Abstract
The design of nanostructured materials with highly stable water-dispersion and luminescence efficiency is an important concern in nanotechnology and nanomedicine. In this paper, we described the synthesis and distinct surface modification on the morphological structure and optical (optical absorption, band gap energy, excitation, emission, decay time, etc.) properties of highly crystalline water-dispersible CaF2:Ce/Tb nanocrystals (core-nanocrystals). The epitaxial growth of inert CaF2 and silica shell, respectively, on their surface forming as CaF2:Ce/Tb@CaF2 (core/shell) and CaF2:Ce/Tb@CaF2@SiO2 (core/shell/SiO2) nanoarchitecture. X-ray diffraction and transmission electron microscope image shows that the nanocrystals were in irregular spherical phase, highly crystalline (~20 nm) with narrow size distribution. The core/shell nanocrystals confirm that the surface coating is responsible in the change of symmetrical nanostructure, which was determined from the band gap energy and luminescent properties. It was found that an inert inorganic shell formation effectively enhances the luminescence efficiency and silica shell makes the nanocrystals highly water-dispersible. In addition, Ce3+/Tb3+-co-doped CaF2 nanocrystals show efficient energy transfer from Ce3+ to Tb3+ ion and strong green luminescence of Tb3+ ion at 541 nm(5D4→7F5). Luminescence decay curves of core and core/shell nanocrystals were fitted using mono and biexponential equations, and R 2 regression coefficient criteria were used to discriminate the goodness of the fitted model. The lifetime values for the core/shell nanocrystals are higher than core-nanocrystals. Considering the high stable water-dispersion and intensive luminescence emission in the visible region, these luminescent core/shell nanocrystals could be potential candidates for luminescent bio-imaging, optical bio-probe, displays, staining, and multianalyte optical sensing. A newly designed CaF2:Ce/Tb nanoparticles via metal complex decomposition rout shows high dispersibility in aqueous solvents with enhanced photoluminescence. The epitaxial growth of inert CaF2 shell and further amorphous silica, respectively, enhanced their optical and luminescence properties, which is highly usable for luminescent biolabeling, and optical bioprobe etc.
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Affiliation(s)
- Anees A Ansari
- King Abdullah Institute for Nanotechnology, King Saud University, Riyadh, 11451, Saudi Arabia.
| | - Abdul K Parchur
- Department of Physics, Banaras Hindu University, Varanasi, 221005, India
| | - Brijesh Kumar
- Department of Physics, Banaras Hindu University, Varanasi, 221005, India
| | - S B Rai
- Department of Physics, Banaras Hindu University, Varanasi, 221005, India
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35
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Li B, Xu H, Xiao C, Shuai M, Chen W, Zhong S. Coordination polymer core/shell structures: Preparation and up/down-conversion luminescence. J Colloid Interface Sci 2016; 479:15-19. [PMID: 27344485 DOI: 10.1016/j.jcis.2016.06.038] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2016] [Revised: 06/11/2016] [Accepted: 06/14/2016] [Indexed: 11/19/2022]
Affiliation(s)
- Bingmei Li
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, Jiangxi 330022, People's Republic of China
| | - Hualan Xu
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, Jiangxi 330022, People's Republic of China; Analytical and Testing Center, Jiangxi Normal University, Nanchang 330022, People's Republic of China
| | - Chen Xiao
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, Jiangxi 330022, People's Republic of China
| | - Min Shuai
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, Jiangxi 330022, People's Republic of China
| | - Weimin Chen
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, Jiangxi 330022, People's Republic of China
| | - Shengliang Zhong
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, Jiangxi 330022, People's Republic of China.
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36
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Ghosh P, Mudring AV. Phase selective synthesis of quantum cutting nanophosphors and the observation of a spontaneous room temperature phase transition. NANOSCALE 2016; 8:8160-8169. [PMID: 27029780 DOI: 10.1039/c6nr00172f] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Oxygen-free Eu(3+)-doped NaGdF4 nanocrystals with high quantum cutting efficiency are accessible at low temperatures (room temperature to 80 °C) using task-specific ionic liquids (ILs) as structure directing agents and only water as solvent. Selective tuning of the shape, morphology and, most importantly, the crystal phase of the host lattice is achieved by changing the alkyl side length, the H-bonding capabilities and the concentration of 1-alkyl-3-methylimidazolium bromide ILs, [C(n)mim]Br. When using [C2mim]Br, hexagonal NaGdF4 nanoparticles are obtained. In the case of methylimidazolium bromides with longer pendant alkyl chains such as butyl (C4), octyl (C8) or decyl (C10), extremely small nanoparticles of the cubic polymorph form, which then convert even at room temperature (RT) to the thermodynamically favored hexagonal modification. To the best of our knowledge, this kind of spontaneous phase transition is not yet reported. The hexagonal nanomaterial shows a substantial quantum cutting efficiency (154%) whilst in the cubic material, the effect is negligible (107%). The easy yet highly phase selective green synthesis of the materials promises large scale industrial application in environmentally benign energy efficient lighting.
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Affiliation(s)
- Pushpal Ghosh
- School of Chemical Science and Technology, Department of Chemistry, Dr. H.S. Gour University (A Central University), Sagar-470003, Madhya Pradesh, India.
| | - Anja-Verena Mudring
- Department of Materials Science and Engineering, Iowa State University, Ames, IA 50014, USA and The Critical Materials Institute, Ames Laboratory, Ames, IA 50011, USA.
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Wang Y, Deng R, Xie X, Huang L, Liu X. Nonlinear spectral and lifetime management in upconversion nanoparticles by controlling energy distribution. NANOSCALE 2016; 8:6666-73. [PMID: 26948717 DOI: 10.1039/c6nr00812g] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Optical tuning of lanthanide-doped upconversion nanoparticles has attracted considerable attention over the past decade because this development allows the advance of new frontiers in energy conversion, materials science, and biological imaging. Here we present a rational approach to manipulating the spectral profile and lifetime of lanthanide emission in upconversion nanoparticles by tailoring their nonlinear optical properties. We demonstrate that the incorporation of energy distributors, such as surface defects or an extra amount of dopants, into a rare-earth-based host lattice alters the decay behavior of excited sensitizers, thus markedly improving the emitters' sensitivity to excitation power. This work provides insight into mechanistic understanding of upconversion phenomena in nanoparticles and also enables exciting new opportunities of using these nanomaterials for photonic applications.
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Affiliation(s)
- Yu Wang
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore.
| | - Renren Deng
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore.
| | - Xiaoji Xie
- Key Laboratory of Flexible Electronics, Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China.
| | - Ling Huang
- Key Laboratory of Flexible Electronics, Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China.
| | - Xiaogang Liu
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore. and Center for Functional Materials, NUS (Suzhou) Research Institute, Suzhou, Jiangsu 215123, China and SZU-NUS Collaborative Innovation Center for Optoelectronic Science & Technology, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
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Xu J, Yang D, Lv R, Liu B, Gai S, He F, Li C, Yang P. Design, fabrication, luminescence and biomedical applications of UCNPs@mSiO2–ZnPc–CDs–P(NIPAm-MAA) nanocomposites. J Mater Chem B 2016; 4:5883-5894. [DOI: 10.1039/c6tb01677d] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The NaGdF4:Yb,Ce,Ho@NaGdF4@mSiO2–ZnPc–CDs–P(NIPAm-MAA)–DOX platform exhibits excellent anti-tumor efficacy due to synergistic PDT, PTT and chemotherapy, accompanied by multimodal imaging properties.
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Affiliation(s)
- Jiating Xu
- Key Laboratory of Superlight Materials and Surface Technology
- Ministry of Education
- College of Material Sciences and Chemical Engineering
- Harbin Engineering University
- Harbin
| | - Dan Yang
- Key Laboratory of Superlight Materials and Surface Technology
- Ministry of Education
- College of Material Sciences and Chemical Engineering
- Harbin Engineering University
- Harbin
| | - Ruichan Lv
- Key Laboratory of Superlight Materials and Surface Technology
- Ministry of Education
- College of Material Sciences and Chemical Engineering
- Harbin Engineering University
- Harbin
| | - Bin Liu
- Key Laboratory of Superlight Materials and Surface Technology
- Ministry of Education
- College of Material Sciences and Chemical Engineering
- Harbin Engineering University
- Harbin
| | - Shili Gai
- Key Laboratory of Superlight Materials and Surface Technology
- Ministry of Education
- College of Material Sciences and Chemical Engineering
- Harbin Engineering University
- Harbin
| | - Fei He
- Key Laboratory of Superlight Materials and Surface Technology
- Ministry of Education
- College of Material Sciences and Chemical Engineering
- Harbin Engineering University
- Harbin
| | - Chunxia Li
- State Key Laboratory of Rare Earth Resource and Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- 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
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39
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Ansari AA, Yadav R, Rai SB. Enhanced luminescence efficiency of aqueous dispersible NaYF4:Yb/Er nanoparticles and the effect of surface coating. RSC Adv 2016. [DOI: 10.1039/c6ra00265j] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
In a general approach, we designed and synthesized monodisperse, well-defined, highly emissive and aqueous dispersible NaYF4:Yb/Er upconversion nanoparticles, and thereafter their surfaces were coated with inert NaYF4 and silica layers.
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Affiliation(s)
- Anees A. Ansari
- King Abdullah Institute for Nanotechnology
- King Saud University
- Riyadh-11451
- Saudi Arabia
| | - Ranvijay Yadav
- Department of Physics
- Banaras Hindu University
- Varanasi
- 221005 India
| | - S. B. Rai
- Department of Physics
- Banaras Hindu University
- Varanasi
- 221005 India
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Song Y, Shao B, Feng Y, Lü W, Liu G, You H. A novel strategy to enhance the luminescence performance of NaGdF4:Ln3+ nanocrystals. Dalton Trans 2016; 45:9468-76. [DOI: 10.1039/c6dt01206j] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The emission intensity of the lanthanide doped ions in the NaGdF4:Ln3+ nanoparticles modified with BA and Phen ligands can be effective enhanced by the energy transfer from the Gd3+ ions and surface modified ligands.
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Affiliation(s)
- Yan Song
- State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- University of Chinese Academy of Sciences
- Changchun 130022
- PR China
| | - Baiqi Shao
- State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- University of Chinese Academy of Sciences
- Changchun 130022
- PR China
| | - Yang Feng
- State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- University of Chinese Academy of Sciences
- Changchun 130022
- PR China
| | - Wei Lü
- State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- University of Chinese Academy of Sciences
- Changchun 130022
- PR China
| | - Guixia Liu
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province
- Changchun University of Science and Technology
- Changchun 130022
- P. R. China
| | - Hongpeng You
- State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- University of Chinese Academy of Sciences
- Changchun 130022
- PR China
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41
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Shang Y, Hao S, Yang C, Chen G. Enhancing Solar Cell Efficiency Using Photon Upconversion Materials. NANOMATERIALS (BASEL, SWITZERLAND) 2015; 5:1782-1809. [PMID: 28347095 PMCID: PMC5304768 DOI: 10.3390/nano5041782] [Citation(s) in RCA: 116] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Revised: 10/10/2015] [Accepted: 10/10/2015] [Indexed: 11/16/2022]
Abstract
Photovoltaic cells are able to convert sunlight into electricity, providing enough of the most abundant and cleanest energy to cover our energy needs. However, the efficiency of current photovoltaics is significantly impeded by the transmission loss of sub-band-gap photons. Photon upconversion is a promising route to circumvent this problem by converting these transmitted sub-band-gap photons into above-band-gap light, where solar cells typically have high quantum efficiency. Here, we summarize recent progress on varying types of efficient upconversion materials as well as their outstanding uses in a series of solar cells, including silicon solar cells (crystalline and amorphous), gallium arsenide (GaAs) solar cells, dye-sensitized solar cells, and other types of solar cells. The challenge and prospect of upconversion materials for photovoltaic applications are also discussed.
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Affiliation(s)
- Yunfei Shang
- School of Chemical Engineering and Technology, Harbin Institute of Technology, Harbin 150001, China.
| | - Shuwei Hao
- School of Chemical Engineering and Technology, Harbin Institute of Technology, Harbin 150001, China.
- Harbin Huigong Technology Co., Ltd., Harbin 150001, China.
| | - Chunhui Yang
- School of Chemical Engineering and Technology, Harbin Institute of Technology, Harbin 150001, China.
- Harbin Huigong Technology Co., Ltd., Harbin 150001, China.
| | - Guanying Chen
- School of Chemical Engineering and Technology, Harbin Institute of Technology, Harbin 150001, China.
- Institute for Lasers, Photonics, and Biophotonics, University at Buffalo, State University of New York, Buffalo, NY 14260, USA.
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42
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Singh BP, Parchur AK, Ningthoujam RS, Ramakrishna PV, Singh S, Singh P, Rai SB, Maalej R. Enhanced up-conversion and temperature-sensing behaviour of Er(3+) and Yb(3+) co-doped Y2Ti2O7 by incorporation of Li(+) ions. Phys Chem Chem Phys 2015; 16:22665-76. [PMID: 25231483 DOI: 10.1039/c4cp02949f] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Y2Ti2O7:Er(3+)/Yb(3+) (EYYTO) phosphors co-doped with Li(+) ions were synthesized by a conventional solid-state ceramic method. X-ray diffraction studies show that all the Li(+) co-doped EYYTO samples are highly crystalline in nature with pyrochlore face centred cubic structure. X-ray photon spectroscopy studies reveal that the incorporation of Li(+) ions creates the defects and/or vacancies associated with the sample surface. The effect of Li(+) ions on the photoluminescence up-conversion intensity of EYYTO was studied in detail. The up-conversion study under ∼976 nm excitation for different concentrations of Li(+) ions showed that the green and red band intensities were significantly enhanced. The 2 at% Li(+) ion co-doped EYYTO samples showed nearly 15- and 8-fold enhancements in green and red band up-converted intensities compared to Li(+) ion free EYYTO. The process involved in the up-conversion emission was evaluated in detail by pump power dependence, the energy level diagram, and decay analysis. The incorporation of Li(+) ions modified the crystal field around the Er(3+) ions, thus improving the up-conversion intensity. To investigate the sensing application of the synthesized phosphor materials, temperature-sensing performance was evaluated using the fluorescence intensity ratio technique. Appreciable temperature sensitivity was obtained using the synthesized phosphor material, indicating its applicability as a high-temperature-sensing probe. The maximum sensitivity was found to be 0.0067 K(-1) at 363 K.
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Affiliation(s)
- B P Singh
- Department of Physics, Indian Institute of Technology (BHU), Varanasi, India-221005
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43
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Liu X, Deng R, Zhang Y, Wang Y, Chang H, Huang L, Liu X. Probing the nature of upconversion nanocrystals: instrumentation matters. Chem Soc Rev 2015; 44:1479-508. [DOI: 10.1039/c4cs00356j] [Citation(s) in RCA: 165] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Understanding upconversion nanocrystals: this review intends to summarize instrumental matters related to the characterization of upconversion nanocrystals from surface structures to intrinsic properties to ultimate challenges in nanocrystal analysis at single-particle levels.
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Affiliation(s)
- Xiaowang Liu
- Department of Chemistry
- Faculty of Science
- National University of Singapore
- Singapore 117543
| | - Renren Deng
- Department of Chemistry
- Faculty of Science
- National University of Singapore
- Singapore 117543
| | - Yuhai Zhang
- Department of Chemistry
- Faculty of Science
- National University of Singapore
- Singapore 117543
| | - Yu Wang
- Department of Chemistry
- Faculty of Science
- National University of Singapore
- Singapore 117543
| | - Hongjin Chang
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials
- National Jiangsu Synergistic Innovation Center for Advanced Materials
- Nanjing Tech University
- Nanjing 211816
- China
| | - Ling Huang
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials
- National Jiangsu Synergistic Innovation Center for Advanced Materials
- Nanjing Tech University
- Nanjing 211816
- China
| | - Xiaogang Liu
- Department of Chemistry
- Faculty of Science
- National University of Singapore
- Singapore 117543
- Institute of Materials Research and Engineering
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44
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Maheshwary M, Singh BP, Singh RA. Color tuning in thermally stable Sm3+-activated CaWO4nanophosphors. NEW J CHEM 2015. [DOI: 10.1039/c4nj01911c] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Sm3+(Sm3+= 2, 5, 7 and 10 at%) doped CaWO4nanophosphors exhibit a wide range emission in blue, green and red regions of the visible spectrum.
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Affiliation(s)
| | - B. P. Singh
- Department of Physics
- Indian Institute of Technology (BHU)
- Varanasi
- India
| | - R. A. Singh
- Department of Physics
- Dr Harisingh Gour University
- Sagar
- India
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45
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Chan EM. Combinatorial approaches for developing upconverting nanomaterials: high-throughput screening, modeling, and applications. Chem Soc Rev 2015; 44:1653-79. [DOI: 10.1039/c4cs00205a] [Citation(s) in RCA: 151] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
This review surveys the use of combinatorial and high-throughput techniques for the rapid discovery, optimization, and application of upconverting nanomaterials.
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Affiliation(s)
- Emory M. Chan
- The Molecular Foundry
- Lawrence Berkeley National Laboratory
- Berkeley
- USA
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46
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Yang D, Ma P, Hou Z, Cheng Z, Li C, Lin J. Current advances in lanthanide ion (Ln3+)-based upconversion nanomaterials for drug delivery. Chem Soc Rev 2015; 44:1416-48. [DOI: 10.1039/c4cs00155a] [Citation(s) in RCA: 622] [Impact Index Per Article: 69.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
This review mainly focuses on the recent advances in various chemical syntheses of Ln3+-based upconversion nanomaterials, with special emphasis on their application in stimuli-response controlled drug release and subsequent therapy.
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Affiliation(s)
- Dongmei Yang
- State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- China
| | - Ping'an Ma
- State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- China
| | - Zhiyou Hou
- State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- China
| | - Ziyong Cheng
- State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- China
| | - Chunxia Li
- State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- China
| | - Jun Lin
- State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- China
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47
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Li X, Zhang F, Zhao D. Lab on upconversion nanoparticles: optical properties and applications engineering via designed nanostructure. Chem Soc Rev 2015; 44:1346-78. [DOI: 10.1039/c4cs00163j] [Citation(s) in RCA: 456] [Impact Index Per Article: 50.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
This review aims to summarize recent progress in optical properties and applications engineering of upconversion nanoparticles via the designed nanostructure.
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Affiliation(s)
- Xiaomin Li
- Department of Chemistry and Laboratory of Advanced Materials
- Fudan University
- Shanghai 200433
- P. R. China
| | - Fan Zhang
- Department of Chemistry and Laboratory of Advanced Materials
- Fudan University
- Shanghai 200433
- P. R. China
| | - Dongyuan Zhao
- Department of Chemistry and Laboratory of Advanced Materials
- Fudan University
- Shanghai 200433
- P. R. China
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48
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Chen G, Ågren H, Ohulchanskyy TY, Prasad PN. Light upconverting core–shell nanostructures: nanophotonic control for emerging applications. Chem Soc Rev 2015; 44:1680-713. [DOI: 10.1039/c4cs00170b] [Citation(s) in RCA: 435] [Impact Index Per Article: 48.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Nanophotonic control of light upconversion in the hierarchical core–shell nanostructures, their biomedical, solar energy and security encoding applications were reviewed.
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Affiliation(s)
- Guanying Chen
- Institute for Lasers, Photonics, and Biophotonics and Department of Chemistry
- University at Buffalo
- State University of New York
- Buffalo
- USA
| | - Hans Ågren
- Department of Theoretical Chemistry & Biology
- Royal Institute of Technology
- S-10691 Stockholm
- Sweden
| | - Tymish Y. Ohulchanskyy
- Institute for Lasers, Photonics, and Biophotonics and Department of Chemistry
- University at Buffalo
- State University of New York
- Buffalo
- USA
| | - Paras N. Prasad
- Institute for Lasers, Photonics, and Biophotonics and Department of Chemistry
- University at Buffalo
- State University of New York
- Buffalo
- USA
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49
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Zhang F. Upconversion Luminescence of Lanthanide Ion-Doped Nanocrystals. PHOTON UPCONVERSION NANOMATERIALS 2015. [DOI: 10.1007/978-3-662-45597-5_3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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50
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Kar A, Kundu S, Patra A. Lanthanide-Doped Nanocrystals: Strategies for Improving the Efficiency of Upconversion Emission and Their Physical Understanding. Chemphyschem 2014; 16:505-21. [DOI: 10.1002/cphc.201402668] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2014] [Indexed: 11/08/2022]
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