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Abad Galán L, Aguilà D, Guyot Y, Velasco V, Roubeau O, Teat SJ, Massi M, Aromí G. Accessing Lanthanide-to-Lanthanide Energy Transfer in a Family of Site-Resolved [Ln III Ln III '] Heterodimetallic Complexes. Chemistry 2021; 27:7288-7299. [PMID: 33448501 DOI: 10.1002/chem.202005327] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Indexed: 12/23/2022]
Abstract
The ligand H3 L (6-[3-oxo-3-(2-hydroxyphenyl)propionyl]pyridine-2-carboxylic acid), which exhibits two different coordination pockets, has been exploited to engender and study energy transfer (ET) in two dinuclear [LnIII LnIII '] analogues of interest, [EuYb] and [NdYb]. Their structural and physical properties have been compared with newly synthesised analogues featuring no possible ET ([EuLu], [NdLu], and [GdYb]) and with the corresponding homometallic [EuEu] and [NdNd] analogues, which have been previously reported. Photophysical data suggest that ET between EuIII and YbIII does not occur to a significant extent, whereas emission from YbIII originates from sensitisation of the ligand. In contrast, energy migration seems to be occurring between the two NdIII centres in [NdNd], as well as in [NdYb], in which YbIII luminescence is thus, in part, sensitised by ET from Nd. This study shows the versatility of this molecular platform to further the investigation of lanthanide-to-lanthanide ET phenomena in defined molecular systems.
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Affiliation(s)
- Laura Abad Galán
- School of Molecular and Life Sciences and Curtin Institute for, Functional Molecules and Interfaces, Curtin University, Kent Street, Bentley, 6102, WA, Australia.,ENS de Lyon, CNRS UMR 5182, Université Lyon, Université Claude Bernard Lyon 1, 69342, Lyon, France
| | - David Aguilà
- Departament de Química Inorgànica i Orgànica, Universitat de Barcelona, Diagonal 645, 08028, Barcelona, Spain.,Institute of Nanoscience and Nanotechnology, University of Barcelona (IN2UB), 08007, Barcelona, Spain
| | - Yannick Guyot
- Institut Lumière Matière, UMR 5306 CNRS, Université Lyon, Université Claude Bernard Lyon 1, Rue Ada Byron, 69622, Villeurbanne Cedex, France
| | - Verónica Velasco
- Departament de Química Inorgànica i Orgànica, Universitat de Barcelona, Diagonal 645, 08028, Barcelona, Spain.,Institute of Nanoscience and Nanotechnology, University of Barcelona (IN2UB), 08007, Barcelona, Spain
| | - Olivier Roubeau
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC and Universidad de Zaragoza, Plaza San Francisco s/n, 50009, Zaragoza, Spain
| | - Simon J Teat
- Advanced Light Source, Berkeley Laboratory, 1 Cyclotron Road, Berkeley, CA, 94720, USA
| | - Massimiliano Massi
- School of Molecular and Life Sciences and Curtin Institute for, Functional Molecules and Interfaces, Curtin University, Kent Street, Bentley, 6102, WA, Australia
| | - Guillem Aromí
- Departament de Química Inorgànica i Orgànica, Universitat de Barcelona, Diagonal 645, 08028, Barcelona, Spain.,Institute of Nanoscience and Nanotechnology, University of Barcelona (IN2UB), 08007, Barcelona, Spain
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2
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Torresan MF, Wolosiuk A. Critical Aspects on the Chemical Stability of NaYF4-Based Upconverting Nanoparticles for Biomedical Applications. ACS APPLIED BIO MATERIALS 2021; 4:1191-1210. [DOI: 10.1021/acsabm.0c01562] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Maria F. Torresan
- Gerencia Química Comisión Nacional de Energía Atómica (CNEA) − INN - CONICET, Av. Gral. Paz 1499, B1650KNA San Martín, Argentina
| | - Alejandro Wolosiuk
- Gerencia Química Comisión Nacional de Energía Atómica (CNEA) − INN - CONICET, Av. Gral. Paz 1499, B1650KNA San Martín, Argentina
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3
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Krishnan R, Menon SG, Poelman D, Kroon RE, Swart HC. Power-dependent upconversion luminescence properties of self-sensitized Er 2WO 6 phosphor. Dalton Trans 2021; 50:229-239. [PMID: 33295910 DOI: 10.1039/d0dt03081c] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
A Yb3+ free self-sensitized Er2WO6 phosphor has been synthesized via a solid-state reaction method. The phosphor material, Er2WO6, has a monoclinic crystal structure with space group P2/c (13). The deconvoluted high-resolution X-ray photoelectron spectra of all the core elements in the Er2WO6 phosphor material were explored. The highly resolved absorption peaks in the ultra-violet, visible and near-infra-red (NIR) regions of the diffuse reflectance spectrum were due to the Stark-splitting of the 4f energy levels of the Er3+ ions. Under 980 nm NIR laser excitation, the Er2WO6 phosphor showed an intense up-converted red emission at 677 nm due to the 4F9/2→4I15/2 transitions of the Er3+ ions. The cross-relaxation and resonance energy transfer process involved in the key intermediate 4F3/2 and 4F5/2 levels of the Er3+ and their role in generating red emissions were investigated. The laser pump power versus upconversion intensity plot showed a slope with an n value <1 and the possible reasons behind this behavior were investigated. The photoluminescence properties of the Er2WO6 phosphor in the visible and NIR region were further analyzed. The potential application of the phosphor as a marker in latent fingerprint detection was also evaluated.
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Affiliation(s)
- Rajagopalan Krishnan
- Department of Physics, University of the Free State, Bloemfontein, 9301, South Africa.
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4
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Andresen E, Würth C, Prinz C, Michaelis M, Resch-Genger U. Time-resolved luminescence spectroscopy for monitoring the stability and dissolution behaviour of upconverting nanocrystals with different surface coatings. NANOSCALE 2020; 12:12589-12601. [PMID: 32500913 DOI: 10.1039/d0nr02931a] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
We demonstrate the potential of time-resolved luminescence spectroscopy for the straightforward assessment and in situ monitoring of the stability of upconversion nanocrystals (UCNPs). Therefore, we prepared hexagonal NaYF4:Yb3+,Er3+ UCNPs with various coatings with a focus on phosphonate ligands of different valency, using different ligand exchange procedures, and studied their dissolution behaviour in phosphate-buffered saline (PBS) dispersions at 20 °C and 37 °C with various analytical methods. The amount of the released UCNPs constituting fluoride ions was quantified by potentiometry using a fluoride ion-sensitive electrode and particle disintegration was confirmed by transmission electron microscopy studies of the differently aged UCNPs. In parallel, the luminescence features of the UCNPs were measured with special emphasis on the lifetime of the sensitizer emission to demonstrate its suitability as screening parameter for UCNP stability and changes in particle composition. The excellent correlation between the changes in luminescence lifetime and fluoride concentration highlights the potential of our luminescence lifetime method for UCNP stability screening and thereby indirect monitoring of the release of potentially hazardous fluoride ions during uptake and dissolution in biological systems. Additionally, the developed in situ optical method was used to distinguish the dissolution dynamics of differently sized and differently coated UCNPs.
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Affiliation(s)
- Elina Andresen
- BAM Federal Institute of Materials Research and Testing, Division Biophotonics, Richard-Willstätter-Str. 11, D-12489 Berlin, Germany. and Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 2, D-12489 Berlin, Germany
| | - Christian Würth
- BAM Federal Institute of Materials Research and Testing, Division Biophotonics, Richard-Willstätter-Str. 11, D-12489 Berlin, Germany.
| | - Carsten Prinz
- BAM Federal Institute of Materials Research and Testing, Division Structure Analysis, Richard-Willstätter-Str. 11, D-12489 Berlin, Germany
| | - Matthias Michaelis
- BAM Federal Institute of Materials Research and Testing, Division Biophotonics, Richard-Willstätter-Str. 11, D-12489 Berlin, Germany.
| | - Ute Resch-Genger
- BAM Federal Institute of Materials Research and Testing, Division Biophotonics, Richard-Willstätter-Str. 11, D-12489 Berlin, Germany.
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5
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Thanasekaran P, Chu CH, Wang SB, Chen KY, Gao HD, Lee MM, Sun SS, Li JP, Chen JY, Chen JK, Chang YH, Lee HM. Lipid-Wrapped Upconversion Nanoconstruct/Photosensitizer Complex for Near-Infrared Light-Mediated Photodynamic Therapy. ACS APPLIED MATERIALS & INTERFACES 2019; 11:84-95. [PMID: 30500151 DOI: 10.1021/acsami.8b07760] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Photodynamic therapy (PDT) is a noninvasive medical technology that has been applied in cancer treatment where it is accessible by direct or endoscope-assisted light irradiation. To lower phototoxicity and increase tissue penetration depth of light, great effort has been focused on developing new sensitizers that can utilize red or near-infrared (NIR) light for the past decades. Lanthanide-doped upconversion nanoparticles (UCNPs) have a unique property to transduce NIR excitation light to UV-vis emission efficiently. This property allows some low-cost, low-toxicity, commercially available visible light sensitizers, which originally are not suitable for deep tissue PDT, to be activated by NIR light and have been reported extensively in the past few years. However, some issues still remain in the UCNP-assisted PDT platform such as colloidal stability, photosensitizer loading efficiency, and accessibility for targeting ligand installation, despite some advances in this direction. In this study, we designed a facile phospholipid-coated UCNP method to generate a highly colloidally stable nanoplatform that can effectively load a series of visible light sensitizers in the lipid layers. The loading stability and singlet oxygen generation efficiency of this sensitizer-loaded lipid-coated UCNP platform were investigated. We also have demonstrated the enhanced cellular uptake efficiency and tumor cell selectivity of this lipid-coated UCNP platform by changing the lipid dopant. On the basis of the evidence of our results, the lipid-complexed UCNP nanoparticles could serve as an effective photosensitizer carrier for NIR light-mediated PDT.
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Affiliation(s)
| | - Chih-Hang Chu
- Institute of Chemistry , Academia Sinica , Taipei 11529 , Taiwan
| | - Sheng-Bo Wang
- Department of Materials and Mineral Resources Engineering, Institute of Mineral Resources Engineering , National Taipei University of Technology , Taipei 10608 , Taiwan
| | - Kuan-Yu Chen
- Department of Materials and Mineral Resources Engineering, Institute of Mineral Resources Engineering , National Taipei University of Technology , Taipei 10608 , Taiwan
| | - Hua-De Gao
- Institute of Chemistry , Academia Sinica , Taipei 11529 , Taiwan
- Department of Chemistry , National Taiwan University , Taipei 10617 , Taiwan
| | - Mandy M Lee
- Institute of Chemistry , Academia Sinica , Taipei 11529 , Taiwan
| | - Shih-Sheng Sun
- Institute of Chemistry , Academia Sinica , Taipei 11529 , Taiwan
| | - Jui-Ping Li
- Institute of Biomedical Engineering and Nanomedicine , National Health Research Institutes , Miaoli 350 , Taiwan
| | - Jiun-Yu Chen
- Institute of Biomedical Engineering and Nanomedicine , National Health Research Institutes , Miaoli 350 , Taiwan
| | - Jen-Kun Chen
- Institute of Biomedical Engineering and Nanomedicine , National Health Research Institutes , Miaoli 350 , Taiwan
| | - Yu-Hsu Chang
- Department of Materials and Mineral Resources Engineering, Institute of Mineral Resources Engineering , National Taipei University of Technology , Taipei 10608 , Taiwan
| | - Hsien-Ming Lee
- Institute of Chemistry , Academia Sinica , Taipei 11529 , Taiwan
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6
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Palo E, Lahtinen S, Päkkilä H, Salomäki M, Soukka T, Lastusaari M. Effective Shielding of NaYF 4:Yb 3+,Er 3+ Upconverting Nanoparticles in Aqueous Environments Using Layer-by-Layer Assembly. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:7759-7766. [PMID: 29901401 PMCID: PMC6150739 DOI: 10.1021/acs.langmuir.8b00869] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 06/13/2018] [Indexed: 06/08/2023]
Abstract
Aqueous solutions are the basis for most biomedical assays, but they quench the upconversion luminescence significantly. Surface modifications of upconverting nanoparticles are vital for shielding the obtained luminescence. Modifications also provide new possibilities for further use by introducing attaching sites for biomolecule conjugation. We demonstrate the use of a layer-by-layer surface modification method combining varying lengths of negatively charged polyelectrolytes with positive neodymium ions in coating the upconverting NaYF4:Yb3+,Er3+ nanoparticles. We confirmed the formation of the bilayers and investigated the surface properties with Fourier transform infrared and reflectance spectroscopy, thermal analysis, and ζ-potential measurements. The effect of the coating on the upconversion luminescence properties was characterized, and the bilayers with the highest improvement in emission intensity were identified. In addition, studies for the nanoparticle and surface stability were carried out in aqueous environments. It was observed that the bilayers were able to shield the materials' luminescence from quenching also in the presence of phosphate buffer that is currently considered the most disruptive environment for the nanoparticles.
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Affiliation(s)
- Emilia Palo
- Department
of Chemistry, University of Turku, FI-20014 Turku, Finland
- Doctoral
Programme in Physical and Chemical Sciences, University of Turku Graduate School (UTUGS), FI-20014 Turku, Finland
| | - Satu Lahtinen
- Department
of Biochemistry, University of Turku, FI-20014 Turku, Finland
| | - Henna Päkkilä
- Department
of Biochemistry, University of Turku, FI-20014 Turku, Finland
| | - Mikko Salomäki
- Department
of Chemistry, University of Turku, FI-20014 Turku, Finland
- Turku
University Centre for Materials and Surfaces (MatSurf), FI-20014 Turku, Finland
| | - Tero Soukka
- Department
of Biochemistry, University of Turku, FI-20014 Turku, Finland
| | - Mika Lastusaari
- Department
of Chemistry, University of Turku, FI-20014 Turku, Finland
- Turku
University Centre for Materials and Surfaces (MatSurf), FI-20014 Turku, Finland
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7
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Young AT, Cornwell N, Daniele MA. Neuro-Nano Interfaces: Utilizing Nano-Coatings and Nanoparticles to Enable Next-Generation Electrophysiological Recording, Neural Stimulation, and Biochemical Modulation. ADVANCED FUNCTIONAL MATERIALS 2018; 28:1700239. [PMID: 33867903 PMCID: PMC8049593 DOI: 10.1002/adfm.201700239] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Neural interfaces provide a window into the workings of the nervous system-enabling both biosignal recording and modulation. Traditionally, neural interfaces have been restricted to implanted electrodes to record or modulate electrical activity of the nervous system. Although these electrode systems are both mechanically and operationally robust, they have limited utility due to the resultant macroscale damage from invasive implantation. For this reason, novel nanomaterials are being investigated to enable new strategies to chronically interact with the nervous system at both the cellular and network level. In this feature article, the use of nanomaterials to improve current electrophysiological interfaces, as well as enable new nano-interfaces to modulate neural activity via alternative mechanisms, such as remote transduction of electromagnetic fields are explored. Specifically, this article will review the current use of nanoparticle coatings to enhance electrode function, then an analysis of the cutting-edge, targeted nanoparticle technologies being utilized to interface with both the electrophysiological and biochemical behavior of the nervous system will be provided. Furthermore, an emerging, specialized-use case for neural interfaces will be presented: the modulation of the blood-brain barrier.
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Affiliation(s)
- Ashlyn T Young
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill, and North Carolina State University, 911 Oval Dr., Raleigh, NC 27695, USA
| | - Neil Cornwell
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill, and North Carolina State University, 911 Oval Dr., Raleigh, NC 27695, USA
| | - Michael A Daniele
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill, and North Carolina State University, 911 Oval Dr., Raleigh, NC 27695, USA
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8
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Dai Y, Bi H, Deng X, Li C, He F, Ma P, Yang P, Lin J. 808 nm near-infrared light controlled dual-drug release and cancer therapy in vivo by upconversion mesoporous silica nanostructures. J Mater Chem B 2017; 5:2086-2095. [DOI: 10.1039/c7tb00224f] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A dual-drug co-delivery and 808 nm NIR photo-controlled release system can control drug release behaviour and enhance anticancer efficacy.
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Affiliation(s)
- Yunlu Dai
- Key Laboratory of Superlight Materials and Surface Technology
- Ministry of Education
- Harbin Engineering University
- Harbin
- P. R. China
| | - Huiting Bi
- Key Laboratory of Superlight Materials and Surface Technology
- Ministry of Education
- Harbin Engineering University
- Harbin
- P. R. China
| | - Xiaoran Deng
- State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- P. R. China
| | - Chunxia Li
- State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- P. R. China
| | - Fei He
- Key Laboratory of Superlight Materials and Surface Technology
- Ministry of Education
- Harbin Engineering University
- Harbin
- P. R. China
| | - Ping'an Ma
- State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- P. R. China
| | - Piaoping Yang
- Key Laboratory of Superlight Materials and Surface Technology
- Ministry of Education
- Harbin Engineering University
- Harbin
- P. R. China
| | - Jun Lin
- State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- P. R. China
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9
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Chen H, Fang A, He L, Zhang Y, Yao S. Sensitive fluorescent detection of H 2O 2 and glucose in human serum based on inner filter effect of squaric acid-iron(III) on the fluorescence of upconversion nanoparticle. Talanta 2016; 164:580-587. [PMID: 28107976 DOI: 10.1016/j.talanta.2016.10.008] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Revised: 09/23/2016] [Accepted: 10/02/2016] [Indexed: 12/24/2022]
Abstract
Diabetes mellitus is an epidemic disease that it has became a worldwide public health problem. Thus, blood glucose monitoring has attracted extensive attention. Here, we report a nanosensor based on inner filter effect (IFE) between upconversion nanoparticles (UCNPs) and squaric acid (SQA)-iron(III) for the highly sensitive and selective detection of glucose levels in human serum. In this assay, GOx-catalyzed oxidization of glucose produces gluconic acid and hydrogen peroxide (H2O2). The latter can catalytically oxidize iron(II) to iron(III) which can rapidly (<1min) coordinate with the SQA to produce (SQA)-iron(III). The absorption band of (SQA)-iron(III) largely covered the emission band of UCNPs, resulting the fluorescence emission of UCNPs was effectively quenched. Therefore, the glucose can be monitored based on the formation of SQA-iron(III). Under the optimal condition, the fluorescence quenching efficiency shows a good linear response to glucose concentration in the ranges of 7-340μmol/L with a detection limit of 2.3μmol/L. The developed method has been further applied to monitor glucose levels in human serum with satisfactory results. Compared with other fluorescence methods, current method displayed high sensitivity and signal-to-noise ratio. Meanwhile, this nanosystem is also generalizable and can be easily expanded to the detection of various H2O2-involved analytes.
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Affiliation(s)
- Hongyu Chen
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, PR China
| | - Aijin Fang
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, PR China
| | - Li He
- Hospital of Hunan Normal University, Hunan Normal University, Changsha 410081, PR China
| | - Youyu Zhang
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, PR China.
| | - Shouzhuo Yao
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, PR China
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10
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Yadav RV, Yadav RS, Bahadur A, Rai SB. Down shifting and quantum cutting from Eu3+, Yb3+ co-doped Ca12Al14O33 phosphor: a dual mode emitting material. RSC Adv 2016. [DOI: 10.1039/c5ra23117e] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
We report the quantum cutting (QC) in a Eu3+, Yb3+ co-doped Ca12Al14O33 phosphor synthesized through combustion method.
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Affiliation(s)
- R. V. Yadav
- Department of Physics
- Institute of Science
- Banaras Hindu University
- India
| | - R. S. Yadav
- Department of Physics
- Institute of Science
- Banaras Hindu University
- India
| | - A. Bahadur
- Department of Physics
- Institute of Science
- Banaras Hindu University
- India
| | - S. B. Rai
- Department of Physics
- Institute of Science
- Banaras Hindu University
- India
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11
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Li D, Sun W, Shao L, Wu S, Huang Z, Jin X, Zhang Q, Li Q. Tailoring solar energy spectrum for efficient organic/inorganic hybrid solar cells by up-conversion luminescence nanophosphors. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.09.023] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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12
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Affiliation(s)
- Wen Zhou
- College of Chemistry, Research Center for Analytical Sciences, State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Molecular Recognition and Biosensing, and Collaborative Innovation Center of Chemical Science and Engineering, Nankai University, 94 Weijin Road, Tianjin 300071, China
| | - Xia Gao
- College of Chemistry, Research Center for Analytical Sciences, State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Molecular Recognition and Biosensing, and Collaborative Innovation Center of Chemical Science and Engineering, Nankai University, 94 Weijin Road, Tianjin 300071, China
| | - Dingbin Liu
- College of Chemistry, Research Center for Analytical Sciences, State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Molecular Recognition and Biosensing, and Collaborative Innovation Center of Chemical Science and Engineering, Nankai University, 94 Weijin Road, Tianjin 300071, China
| | - Xiaoyuan Chen
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health (NIH), Bethesda, Maryland 20892, United States
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13
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Fluorescence-based bioassays for the detection and evaluation of food materials. SENSORS 2015; 15:25831-67. [PMID: 26473869 PMCID: PMC4634490 DOI: 10.3390/s151025831] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Revised: 09/28/2015] [Accepted: 09/30/2015] [Indexed: 12/12/2022]
Abstract
We summarize here the recent progress in fluorescence-based bioassays for the detection and evaluation of food materials by focusing on fluorescent dyes used in bioassays and applications of these assays for food safety, quality and efficacy. Fluorescent dyes have been used in various bioassays, such as biosensing, cell assay, energy transfer-based assay, probing, protein/immunological assay and microarray/biochip assay. Among the arrays used in microarray/biochip assay, fluorescence-based microarrays/biochips, such as antibody/protein microarrays, bead/suspension arrays, capillary/sensor arrays, DNA microarrays/polymerase chain reaction (PCR)-based arrays, glycan/lectin arrays, immunoassay/enzyme-linked immunosorbent assay (ELISA)-based arrays, microfluidic chips and tissue arrays, have been developed and used for the assessment of allergy/poisoning/toxicity, contamination and efficacy/mechanism, and quality control/safety. DNA microarray assays have been used widely for food safety and quality as well as searches for active components. DNA microarray-based gene expression profiling may be useful for such purposes due to its advantages in the evaluation of pathway-based intracellular signaling in response to food materials.
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14
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Chen Z, Li Q, Chen C, Du J, Tong J, Jin X, Li Y, Yuan Y, Qin Y, Wei T, Sun W. Enhanced charge transport and photovoltaic performance induced by incorporating rare-earth phosphor into organic-inorganic hybrid solar cells. Phys Chem Chem Phys 2015; 16:24499-508. [PMID: 25307965 DOI: 10.1039/c4cp03232b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
In this work, dysprosium ion decorated yttrium oxide (Dy(3+):Y2O3) nanocrystal phosphors were incorporated into TiO2 acceptor thin film in a bid to enhance the light harvest, charge separation and transfer in the hybrid solar cells. The results show that the energy level offset between the donor (P3HT) and the acceptor (Dy(3+):Y2O3-TiO2) has been narrowed down, thus leading to the enhanced electron and hole transports, and also photovoltaic performances as compared to pure TiO2 without incorporating Dy(3+):Y2O3. By applying femtosecond transient optical spectroscopy, after the incorporation of dopant Dy(3+):Y2O3 into TiO2 at 6 wt%, both the hot electron and hole transfer lifetimes have been shortened, that is, from 30.2 ps and 6.94 ns to 25.1 ps and 1.26 ns, respectively, and an enhanced efficiency approaching 3% was achieved as compared to 2.0% without doping, indicating that the energetic charges are captured more efficiently benefitting a higher power conversion efficiency. Moreover, these results reveal that both the conduction band (CB) and valence band (VB) edges of the acceptor were elevated by 0.57 and 0.32 eV, respectively, after incorporating 6 wt% Dy(3+):Y2O3. This work demonstrates that distinct energy level alignment engineered by Dy(3+):Y2O3 phosphor has an important role in pursuing efficient future solar cells and underscores the promising potential of rare-earth phosphor in solar applications.
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Affiliation(s)
- Zihan Chen
- Key Laboratory of Nondestructive Testing, Ministry of Education, Nanchang Hangkong University, Nanchang, 330063, P. R. China.
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15
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Wu Q, Long Q, Li H, Zhang Y, Yao S. An upconversion fluorescence resonance energy transfer nanosensor for one step detection of melamine in raw milk. Talanta 2015; 136:47-53. [DOI: 10.1016/j.talanta.2015.01.005] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Revised: 01/02/2015] [Accepted: 01/05/2015] [Indexed: 02/02/2023]
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16
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Zheng W, Huang P, Tu D, Ma E, Zhu H, Chen X. Lanthanide-doped upconversion nano-bioprobes: electronic structures, optical properties, and biodetection. Chem Soc Rev 2015; 44:1379-415. [DOI: 10.1039/c4cs00178h] [Citation(s) in RCA: 653] [Impact Index Per Article: 72.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The latest advances in lanthanide-doped upconversion nanoparticles were comprehensively reviewed, which covers from their fundamental photophysics to biodetection.
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Affiliation(s)
- Wei Zheng
- Key Laboratory of Optoelectronic Materials Chemistry and Physics
- and Key Laboratory of Design and Assembly of Functional Nanostructures
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
| | - Ping Huang
- Key Laboratory of Optoelectronic Materials Chemistry and Physics
- and Key Laboratory of Design and Assembly of Functional Nanostructures
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
| | - Datao Tu
- Key Laboratory of Optoelectronic Materials Chemistry and Physics
- and Key Laboratory of Design and Assembly of Functional Nanostructures
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
| | - En Ma
- Key Laboratory of Optoelectronic Materials Chemistry and Physics
- and Key Laboratory of Design and Assembly of Functional Nanostructures
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
| | - Haomiao Zhu
- Key Laboratory of Optoelectronic Materials Chemistry and Physics
- and Key Laboratory of Design and Assembly of Functional Nanostructures
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
| | - Xueyuan Chen
- Key Laboratory of Optoelectronic Materials Chemistry and Physics
- and Key Laboratory of Design and Assembly of Functional Nanostructures
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
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17
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Wang N, Gao C, Han Y, Huang X, Xu Y, Cao X. Detection of human immunoglobulin G by label-free electrochemical immunoassay modified with ultralong CuS nanowires. J Mater Chem B 2015; 3:3254-3259. [DOI: 10.1039/c4tb01881h] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A novel label-free electrochemical immunoassay modified with ultralong CuS nanowires was developed for the detection of human immunoglobulin G.
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Affiliation(s)
- Ning Wang
- School of Chemistry and Environment
- Beijing University of Aeronautics and Astronautics
- Beijing
- China
| | - Caizhen Gao
- School of Chemistry and Environment
- Beijing University of Aeronautics and Astronautics
- Beijing
- China
- Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of Science
| | - Yu Han
- School of Chemistry and Environment
- Beijing University of Aeronautics and Astronautics
- Beijing
- China
- Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of Science
| | - Xiaomin Huang
- School of Chemistry and Environment
- Beijing University of Aeronautics and Astronautics
- Beijing
- China
- Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of Science
| | - Ying Xu
- School of Chemistry and Environment
- Beijing University of Aeronautics and Astronautics
- Beijing
- China
- Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of Science
| | - Xia Cao
- Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of Science
- Beijing
- China
- School of Chemistry and Biological Engineering
- University of Science and Technology Beijing
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18
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Yadav RV, Singh SK, Rai SB. Effect of the Li+ ion on the multimodal emission of a lanthanide doped phosphor. RSC Adv 2015. [DOI: 10.1039/c4ra17315e] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
The present study probes the multimodal emission: upconversion, photoluminescence and quantum cutting processes in a Ho3+/Yb3+ co-doped Y2O3 phosphor and further examines the impact of the Li+ ion on the multi-modal emission, for the first time.
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Affiliation(s)
- R. V. Yadav
- Department of Physics
- Banaras Hindu University
- Varanasi-221005
- India
| | - S. K. Singh
- Department of Physics
- Indian Institute of Technology (Banaras Hindu University)
- Varanasi-221005
- India
| | - S. B. Rai
- Department of Physics
- Banaras Hindu University
- Varanasi-221005
- India
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19
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20
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Jin X, Sun W, Chen Z, Wei T, Chen C, He X, Yuan Y, Li Y, Li Q. Exciton generation/dissociation/charge-transfer enhancement in inorganic/organic hybrid solar cells by robust single nanocrystalline LnPxOy (Ln = Eu, Y) doping. ACS APPLIED MATERIALS & INTERFACES 2014; 6:8771-8781. [PMID: 24835845 DOI: 10.1021/am501597k] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Low-temperature solution-processed photovoltaics suffer from low efficiencies because of poor exciton or electron-hole transfer. Inorganic/organic hybrid solar cell, although still in its infancy, has attracted great interest thus far. One of the promising ways to enhance exciton dissociation or electron-hole transport is the doping of lanthanide phosphate ions. However, the underlying photophysical mechanism remains poorly understood. Herein, by applying femtosecond transient absorption spectroscopy, we successfully distinguished hot electron, less energetic electron, hole transport from electron-hole recombination. Concrete evidence has been provided that lanthanide phosphate doping improves the efficiency of both hot electron and "less energetic" electron transfers from donor to acceptor, but the hole transport almost remains unchanged. In particular, the hot electron transfer lifetime was shortened from 30.2 to 12.7 ps, that is, more than 60% faster than pure TiO2 acceptor. Such improvement was ascribed to the facts that the conduction band (CB) edge energy level of TiO2 has been elevated by 0.2 eV, while the valence band level almost remains unchanged, thus not only narrowing the energy offset between CB levels of TiO2 and P3HT, but also meanwhile enlarging the band gap of TiO2 itself that permits one to inhibit electron-hole recombination within TiO2. Consequently, lanthanide phosphate doped TiO2/P3HT bulk-heterojunction solar cell has been demonstrated to be a promising hybrid solar cell, and a notable power conversion efficiency of 2.91% is therefore attained. This work indicates that lanthanide compound ions can efficiently facilitate exciton generation, dissociation, and charge transport, thus enhancing photovoltaic performance.
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Affiliation(s)
- Xiao Jin
- Key Laboratory of Nondestructive Testing, Ministry of Education, Nanchang Hangkong University , Nanchang 330063, People's Republic of China
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21
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Pavitra E, Seeta Rama Raju G, Oh JH, Yu JS. Pump power induced tunable upconversion emissions from Er3+/Tm3+/Yb3+ions tri-doped SrY2O4nanocrystalline phosphors. NEW J CHEM 2014. [DOI: 10.1039/c4nj00163j] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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22
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Wang S, Meng X, Das A, Li T, Song Y, Cao T, Zhu X, Zhu M, Jin R. A 200-fold quantum yield boost in the photoluminescence of silver-doped Ag(x)Au(25-x) nanoclusters: the 13th silver atom matters. Angew Chem Int Ed Engl 2014; 53:2376-80. [PMID: 24474712 DOI: 10.1002/anie.201307480] [Citation(s) in RCA: 366] [Impact Index Per Article: 36.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2013] [Revised: 11/11/2013] [Indexed: 01/12/2023]
Abstract
The rod-shaped Au25 nanocluster possesses a low photoluminescence quantum yield (QY=0.1%) and hence is not of practical use in bioimaging and related applications. Herein, we show that substituting silver atoms for gold in the 25-atom matrix can drastically enhance the photoluminescence. The obtained Ag(x)Au(25-x) (x=1-13) nanoclusters exhibit high quantum yield (QY=40.1%), which is in striking contrast with the normally weakly luminescent Ag(x)Au(25-x) species (x=1-12, QY=0.21%). X-ray crystallography further determines the substitution sites of Ag atoms in the Ag(x)Au(25-x) cluster through partial occupancy analysis, which provides further insight into the mechanism of photoluminescence enhancement.
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Affiliation(s)
- Shuxin Wang
- Department of Chemistry, Anhui University, Hefei, Anhui 230601 (China)
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23
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Wang S, Meng X, Das A, Li T, Song Y, Cao T, Zhu X, Zhu M, Jin R. A 200-fold Quantum Yield Boost in the Photoluminescence of Silver-Doped AgxAu25−xNanoclusters: The 13 th Silver Atom Matters. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201307480] [Citation(s) in RCA: 84] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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24
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Dai Y, Xiao H, Liu J, Yuan Q, Ma P, Yang D, Li C, Cheng Z, Hou Z, Yang P, Lin J. In Vivo Multimodality Imaging and Cancer Therapy by Near-Infrared Light-Triggered trans-Platinum Pro-Drug-Conjugated Upconverison Nanoparticles. J Am Chem Soc 2013; 135:18920-9. [DOI: 10.1021/ja410028q] [Citation(s) in RCA: 474] [Impact Index Per Article: 43.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Yunlu Dai
- State
Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Haihua Xiao
- Department
of Chemical and Biomolecular Engineering, University of Notre Dame, Notre
Dame, Indiana 46556, United States
| | - Jianhua Liu
- Department
of Radiology, The Second Hospital of Jilin University, Changchun, 130022, People’s Republic of China
| | - Qinghai Yuan
- Department
of Radiology, The Second Hospital of Jilin University, Changchun, 130022, People’s Republic of China
| | - Ping’an Ma
- State
Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, People’s Republic of China
| | - Dongmei Yang
- State
Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, People’s Republic of China
| | - Chunxia Li
- State
Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, People’s Republic of China
| | - Ziyong Cheng
- State
Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, People’s Republic of China
| | - Zhiyao Hou
- State
Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, People’s Republic of China
| | - Piaoping Yang
- Key
Laboratory of Superlight Materials and Surface Technology, Ministry of Education, Harbin Engineering University, Harbin, 150001, People’s Republic of China
| | - Jun Lin
- State
Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, People’s Republic of China
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25
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Geißler D, Linden S, Liermann K, Wegner KD, Charbonnière LJ, Hildebrandt N. Lanthanides and Quantum Dots as Förster Resonance Energy Transfer Agents for Diagnostics and Cellular Imaging. Inorg Chem 2013; 53:1824-38. [DOI: 10.1021/ic4017883] [Citation(s) in RCA: 111] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Daniel Geißler
- BAM, Federal Institute for Materials Research and Testing, Division 1.10 Biophotonics, Berlin-Adlershof, Germany
| | - Stina Linden
- NanoBioPhotonics, Institut d’Electronique Fondamentale, Université Paris-Sud, Orsay, France
| | - Konstanze Liermann
- NanoPolyPhotonics, Fraunhofer Institute for Applied Polymer Research, Potsdam-Golm, Germany
| | - K. David Wegner
- NanoBioPhotonics, Institut d’Electronique Fondamentale, Université Paris-Sud, Orsay, France
| | - Loïc J. Charbonnière
- Laboratoire d’Ingénierie Moléculaire Appliquée
à l’Analyse, IPHC, UMR 7178 CNRS-Université de Strasbourg, ECPM, Strasbourg, France
| | - Niko Hildebrandt
- NanoBioPhotonics, Institut d’Electronique Fondamentale, Université Paris-Sud, Orsay, France
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26
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Gu Z, Yan L, Tian G, Li S, Chai Z, Zhao Y. Recent advances in design and fabrication of upconversion nanoparticles and their safe theranostic applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2013; 25:3758-79. [PMID: 23813588 DOI: 10.1002/adma.201301197] [Citation(s) in RCA: 241] [Impact Index Per Article: 21.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2013] [Revised: 04/03/2013] [Indexed: 05/21/2023]
Abstract
Lanthanide (Ln) doped upconversion nanoparticles (UCNPs) have attracted enormous attention in the recent years due to their unique upconversion luminescent properties that enable the conversion of low-energy photons (near infrared photons) into high-energy photons (visible to ultraviolet photons) via the multiphoton processes. This feature makes them ideal for bioimaging applications with attractive advantages such as no autofluorescence from biotissues and a large penetration depth. In addition, by incorporating advanced features, such as specific targeting, multimodality imaging and therapeutic delivery, the application of UCNPs has been dramatically expanded. In this review, we first summarize the recent developments in the fabrication strategies of UCNPs with the desired size, enhanced and tunable upconversion luminescence, as well as the combined multifunctionality. We then discuss the chemical methods applied for UCNPs surface functionalization to make these UCNPs biocompatible and water-soluble, and further highlight some representative examples of using UCNPs for in vivo bioimaging, NIR-triggered drug/gene delivery applications and photodynamic therapy. In the perspectives, we discuss the need of systematically nanotoxicology data for rational designs of UCNPs materials, their surface chemistry in safer biomedical applications. The UCNPs can actually provide an ideal multifunctionalized platform for solutions to many key issues in the front of medical sciences such as theranostics, individualized therapeutics, multimodality medicine, etc.
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Affiliation(s)
- Zhanjun Gu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanosciences and Technology of China and Institute of High Energy Physics, Chinese Academy of Sciences (CAS), Beijing, China
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27
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Dong H, Sun LD, Yan CH. Basic understanding of the lanthanide related upconversion emissions. NANOSCALE 2013; 5:5703-14. [PMID: 23423120 DOI: 10.1039/c3nr34069d] [Citation(s) in RCA: 99] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
With abundant energy levels of 4f electron configurations, trivalent lanthanide ions (Ln(3+)) are endowed with unique and fascinating luminescent properties. Inheriting the native transition behaviour of the lanthanide ions, Ln(3+) based nanomaterials have aroused great interest for a wide range of applications, including lighting and displays, optical fibers and amplifiers, responsive luminescent stains for biomedical analysis, in vivo and in vitro imaging, and enhancement for silicon solar cell devices. It should be noted that the application depends completely on the corresponding luminescent behaviour. To deepen the understanding of the luminescent mechanism is important for the developing of the field and the design of new Ln(3+) based luminescent materials toward applications. In this review, we focused mainly on the recent developments on upconversion (UC) emission studies. Firstly, the emphasis was put on the introduction of basic luminescent properties of Ln(3+) with f-f transitions, and then the corresponding mechanisms and properties of UC emission were discussed in detail, the potential researches with respect to UC mechanisms and properties were finally outlined.
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Affiliation(s)
- Hao Dong
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, PKU-HKU Joint Laboratory in Rare Earth Materials and Bioinorganic Chemistry, Peking University, Beijing 100871, China
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28
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Liu Y, Tu D, Zhu H, Ma E, Chen X. Lanthanide-doped luminescent nano-bioprobes: from fundamentals to biodetection. NANOSCALE 2013; 5:1369-84. [PMID: 23223801 DOI: 10.1039/c2nr33239f] [Citation(s) in RCA: 102] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Trivalent lanthanide (Ln(3+))-doped luminescent inorganic nanoparticles (NPs), characterized by long-lived luminescence, large Stokes and/or anti-Stokes shifts, narrow emission bands and high photochemical stability, are considered to be promising candidates as luminescent bioprobes in biomedicine and biotechnology. In this feature article, we provide a brief overview of the most recent advances in Ln(3+)-doped luminescent inorganic NPs as sensors, which covers from their chemical and physical fundamentals to biodetection, such as controlled synthesis methodology, surface modification chemistry, optical physics, and their promising applications in diverse bioassays, with an emphasis on heterogeneous and homogeneous in vitro biodetection. Finally, some of the most important emerging trends and future efforts toward this active research field are also proposed.
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Affiliation(s)
- Yongsheng Liu
- Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
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29
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Liu F, Zhao Q, You H, Wang Z. Synthesis of stable carboxy-terminated NaYF4: Yb3+, Er3+@SiO2 nanoparticles with ultrathin shell for biolabeling applications. NANOSCALE 2013; 5:1047-1053. [PMID: 23254181 DOI: 10.1039/c2nr33046f] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Here, a two-step method has been developed for synthesizing carboxy-terminated NaYF(4): Yb(3+), Er(3+)@SiO(2) core@shell nanoparticles (UCNP@SiO(2)) with ultrathin shell (1.5 nm). First, the NaYF(4): Yb(3+), Er(3+) upconverting nanoparticles (UCNPs) were prepared using solvothermal technology; then, silica shells (SiO(2)) were deposited on the nanocrystals to form core-shell structures by the hydrolysis of tetraethylorthosilicate (TEOS). The ultrathin SiO(2) shell was obtained by increasing surfactant amount and decreasing TEOS amount in the reaction mixture. Carboxyethylsilanetriol (CTES) was used to generate the carboxy group on the particle surface. The carboxy-terminated UCNP@SiO(2) are ideally suited for biolabeling and bioimaging applications because the as-prepared nanoparticles have extreme colloidal and optical stabilities, and the carboxy groups on the particle surface easily react with amino residues of biomolecules. As an example, we reported on the interactions of Ricinus Communis Agglutinin (RCA 120) conjugated UCNP@SiO(2) with HeLa cells. The excellent performance of the RCA 120 conjugated UCNP@SiO(2) in cellular fluorescence imaging was demonstrated.
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Affiliation(s)
- Fuyao Liu
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, PR China
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30
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Liu Y, Tu D, Zhu H, Chen X. Lanthanide-doped luminescent nanoprobes: controlled synthesis, optical spectroscopy, and bioapplications. Chem Soc Rev 2013; 42:6924-58. [DOI: 10.1039/c3cs60060b] [Citation(s) in RCA: 697] [Impact Index Per Article: 63.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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