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Karafiludis S, Buzanich AG, Heinekamp C, Zimathies A, Smales GJ, Hodoroaba VD, Ten Elshof JE, Emmerling F, Stawski TM. Template-free synthesis of mesoporous and amorphous transition metal phosphate materials. NANOSCALE 2023; 15:3952-3966. [PMID: 36723216 DOI: 10.1039/d2nr05630e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
We present how mesoporosity can be engineered in transition metal phosphate (TMPs) materials in a template-free manner. The method involves the transformation of a precursor metal phosphate phase, called M-struvite (NH4MPO4·6H2O, M = Mg2+, Ni2+, Co2+, NixCo1-x2+). It relies on the thermal decomposition of crystalline M-struvite precursors to an amorphous and simultaneously mesoporous phase, which forms during degassing of NH3 and H2O. The temporal evolution of mesoporous frameworks and the response of the metal coordination environment were followed by in situ and ex situ scattering and diffraction, as well as X-ray spectroscopy. Despite sharing the same precursor struvite structure, different amorphous and mesoporous structures were obtained depending on the involved transition metal. We highlight the systematic differences in absolute surface area, pore shape, pore size, and phase transitions depending on the metal cation present in the analogous M-struvites. The amorphous structures of thermally decomposed Mg-, Ni- and NixCo1-x-struvites exhibit high surface areas and pore volumes (240 m2 g-1 and 0.32 cm-3 g-1 for Mg and 90 m2 g-1 and 0.13 cm-3 g-1 for Ni). We propose that the low-cost, environmentally friendly M-struvites could be obtained as recycling products from industrial and agricultural wastewaters. These waste products could be then upcycled into mesoporous TMPs through a simple thermal treatment for further application, for instance in (electro)catalysis.
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Affiliation(s)
- Stephanos Karafiludis
- Federal Institute for Materials Research and Testing, Unter den Eichen 87, 12205 Berlin, Germany.
- Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Straße 2, 12489 Berlin, Germany
| | - Ana Guilherme Buzanich
- Federal Institute for Materials Research and Testing, Unter den Eichen 87, 12205 Berlin, Germany.
| | - Christian Heinekamp
- Federal Institute for Materials Research and Testing, Unter den Eichen 87, 12205 Berlin, Germany.
- Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Straße 2, 12489 Berlin, Germany
| | - Annett Zimathies
- Federal Institute for Materials Research and Testing, Unter den Eichen 87, 12205 Berlin, Germany.
| | - Glen J Smales
- Federal Institute for Materials Research and Testing, Unter den Eichen 87, 12205 Berlin, Germany.
| | - Vasile-Dan Hodoroaba
- Federal Institute for Materials Research and Testing, Unter den Eichen 87, 12205 Berlin, Germany.
| | - Johan E Ten Elshof
- MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE Enschede, the Netherlands
| | - Franziska Emmerling
- Federal Institute for Materials Research and Testing, Unter den Eichen 87, 12205 Berlin, Germany.
- Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Straße 2, 12489 Berlin, Germany
| | - Tomasz M Stawski
- Federal Institute for Materials Research and Testing, Unter den Eichen 87, 12205 Berlin, Germany.
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2
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Ansari AA, Muthumareeswaran M, Lv R. Coordination chemistry of the host matrices with dopant luminescent Ln3+ ion and their impact on luminescent properties. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214584] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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3
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Encapsulation of 67Cu therapeutic radiometal in luminescent lanthanide phosphate core and core-shell nanoparticles. Appl Radiat Isot 2022; 186:110296. [DOI: 10.1016/j.apradiso.2022.110296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 05/06/2022] [Accepted: 05/13/2022] [Indexed: 11/18/2022]
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4
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Lepry WC, Nazhat SN. A Review of Phosphate and Borate Sol–Gel Glasses for Biomedical Applications. ADVANCED NANOBIOMED RESEARCH 2021. [DOI: 10.1002/anbr.202000055] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Affiliation(s)
- William C. Lepry
- Department of Mining and Materials Engineering McGill University 3610 Rue University Montreal QC H3A 0C5 Canada
| | - Showan N. Nazhat
- Department of Mining and Materials Engineering McGill University 3610 Rue University Montreal QC H3A 0C5 Canada
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5
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Berends AC, van de Haar MA, Krames MR. YAG:Ce 3+ Phosphor: From Micron-Sized Workhorse for General Lighting to a Bright Future on the Nanoscale. Chem Rev 2020; 120:13461-13479. [PMID: 33164489 DOI: 10.1021/acs.chemrev.0c00618] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The renowned yellow phosphor yttrium aluminum garnet (YAG) doped with trivalent cerium has found its way into applications in many forms: as powder of micron sized crystals, as a ceramic, and even as a single crystal. However, additional technological advancement requires providing this material in new form factors, especially in terms of particle size. Where many materials have been developed on the nanoscale with excellent optical properties (e.g., semiconductor quantum dots, perovskite nanocrystals, and rare earth doped phosphors), it is surprising that the development of nanocrystalline YAG:Ce is not as mature as for these other materials. Control over size and shape is still in its infancy, and optical properties are not yet at the same level as other materials on the nanoscale, even though YAG:Ce microcrystalline materials exceed the performance of most other materials. This review highlights developments in synthesis methods and mechanisms and gives an overview of the state of the art morphologies, particle sizes, and optical properties of YAG:Ce on the nanoscale.
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Affiliation(s)
- Anne C Berends
- Seaborough Research BV, Matrix VII Innovation Center, Science Park 106, 1098 XG Amsterdam, The Netherlands
| | - Marie Anne van de Haar
- Seaborough Research BV, Matrix VII Innovation Center, Science Park 106, 1098 XG Amsterdam, The Netherlands
| | - Michael R Krames
- Seaborough Research BV, Matrix VII Innovation Center, Science Park 106, 1098 XG Amsterdam, The Netherlands.,Arkesso LLC, 2625 Middlefield Road, No. 687, Palo Alto, California 94306, United States
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6
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Bai H, Yang Y, Bao J, Wu A, Qiao Y, Guo X, Wang M, Li W, Liu Y, Zhu X. High-efficient fabrication of core-shell-shell structured SiO 2@GdPO 4:Tb@SiO 2 nanoparticles with improved luminescence. ROYAL SOCIETY OPEN SCIENCE 2020; 7:192235. [PMID: 32537211 PMCID: PMC7277279 DOI: 10.1098/rsos.192235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/05/2020] [Accepted: 04/23/2020] [Indexed: 06/11/2023]
Abstract
SiO2@GdPO4:Tb@SiO2 nanoparticles with core-shell-shell structure were successfully synthesized by a cheap silane coupling agent grafting method at room temperature. This method not only homogeneously coated rare-earth phosphate nanoparticles on the surface of silica spheres but also saved the use of rare-earth resources. The obtained nanoparticles consisted of SiO2 core with a diameter of approximately 210 nm, GdPO4:Tb intermediate shell with thickness of approximately 7 nm, and SiO2 outer shell with thickness of approximately 20 nm. This unique core-shell-shell structured nanoparticles exhibited strong luminescence properties compared with GdPO4:Tb nanoparticles. The core-shell-shell structured nanoparticles can effectively quench the intrinsic fluorescence of bovine serum albumin through a static quenching mode. The as-synthesized nanoparticles show great potential in biological cell imaging and cancer treatment.
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Affiliation(s)
- He Bai
- Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, College of Chemistry and Chemical Engineering, Inner Mongolia Medical University, Hohhot 010110, People's Republic of China
| | - Yunjiang Yang
- Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, College of Chemistry and Chemical Engineering, Inner Mongolia Medical University, Hohhot 010110, People's Republic of China
| | - Jinrong Bao
- Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, College of Chemistry and Chemical Engineering, Inner Mongolia Medical University, Hohhot 010110, People's Republic of China
| | - Anping Wu
- Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, College of Chemistry and Chemical Engineering, Inner Mongolia Medical University, Hohhot 010110, People's Republic of China
| | - Yan Qiao
- Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, College of Chemistry and Chemical Engineering, Inner Mongolia Medical University, Hohhot 010110, People's Republic of China
| | - Xueyuan Guo
- Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, College of Chemistry and Chemical Engineering, Inner Mongolia Medical University, Hohhot 010110, People's Republic of China
| | - Mingyuan Wang
- Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, College of Chemistry and Chemical Engineering, Inner Mongolia Medical University, Hohhot 010110, People's Republic of China
| | - Wenxian Li
- Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, College of Chemistry and Chemical Engineering, Inner Mongolia Medical University, Hohhot 010110, People's Republic of China
| | - Ying Liu
- Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, College of Chemistry and Chemical Engineering, Inner Mongolia Medical University, Hohhot 010110, People's Republic of China
| | - Xiaowei Zhu
- College of Pharmacology, Inner Mongolia Medical University, Hohhot 010110, People's Republic of China
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7
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van de Haar MA, Berends AC, Krames MR, Chepyga L, Rabouw FT, Meijerink A. Eu 3+ Sensitization via Nonradiative Interparticle Energy Transfer Using Inorganic Nanoparticles. J Phys Chem Lett 2020; 11:689-695. [PMID: 31922751 DOI: 10.1021/acs.jpclett.9b03764] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Phosphors have been used successfully for both research and commercial applications for decades. Eu3+-doped materials are especially promising, because of their extremely stable, efficient, and narrow red emission lines. Although these emission properties are ideal for lighting applications, weak absorption in the blue spectral range has until now prevented the use of Eu3+-based phosphors in applications based on blue light-emitting diodes. Here, we demonstrate a sensitization mechanism of Eu3+ based on interparticle Förster resonance energy transfer (IFRET) between lanthanide-doped inorganic nanocrystals (NCs). Compared to co-doping different lanthanides in the same host crystal, IFRET allows an independent choice of host lattices for Eu3+ and its sensitizer while potentially greatly reducing metal-to-metal charge transfer quenching. We demonstrate IFRET between NCs, resulting in red Eu3+ emission upon blue excitation at 485 nm using LaPO4:Tb/LaPO4:Eu and LaPO4:Tb/YVPO4:Eu NC mixtures. These findings pave the way toward engineering blue-sensitized line emitters for solid-state lighting applications.
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Affiliation(s)
- Marie Anne van de Haar
- Seaborough Research BV , Matrix VII Innovation Center , Science Park 106 , 1098 XG Amsterdam , The Netherlands
| | - Anne C Berends
- Seaborough Research BV , Matrix VII Innovation Center , Science Park 106 , 1098 XG Amsterdam , The Netherlands
| | - Michael R Krames
- Seaborough Research BV , Matrix VII Innovation Center , Science Park 106 , 1098 XG Amsterdam , The Netherlands
- Arkesso LLC , 2625 Middlefield Road, Number 687 , Palo Alto , California 94306 , United States
| | - Liudmyla Chepyga
- Utrecht University , Princetonplein 1 , 3584 CC Utrecht , The Netherlands
| | - Freddy T Rabouw
- Utrecht University , Princetonplein 1 , 3584 CC Utrecht , The Netherlands
| | - Andries Meijerink
- Utrecht University , Princetonplein 1 , 3584 CC Utrecht , The Netherlands
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8
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Espinoza S, Juestel T, Haase M. Colloidal LaPO 4:Gd 3+ nanocrystals: X-ray induced single line UV emission. NANOSCALE 2018; 10:22533-22540. [PMID: 30480289 DOI: 10.1039/c8nr06867d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Colloidal solutions of nearly monodisperse 5 nm LaPO4:Gd3+ nanocrystals are shown to strongly emit UV radiation upon excitation with tungsten Kα radiation (59.3 keV) or vacuum UV radiation (160 nm). The UV emission of the particles consists mainly of a single line at 311 nm corresponding to the 6P7/2-8S7/2 transition of Gd3+. The highest emission intensity is observed for LaPO4 nanocrystals with a Gd3+ concentration of 20%. Since the absorption cross section of biomaterials is low for X-rays but high for 311 nm radiation, the UV emission of particles embedded in the biological tissue can only affect the direct vicinity of the particles. Nanocrystals of LaPO4:Gd3+ could, therefore, be interesting for biomedical applications such as strongly localized drug release by X-ray triggered UV uncaging reactions.
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Affiliation(s)
- Sara Espinoza
- Muenster University of Applied Sciences, Stegerwaldstr. 39, D-48565 Steinfurt, Germany
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9
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Meenambal R, Poojar P, Geethanath S, Anitha TS, Kannan S. Lanthanide phosphate (LnPO 4 ) rods as bio-probes: A systematic investigation on structural, optical, magnetic, and biological characteristics. J Biomed Mater Res B Appl Biomater 2018; 107:1372-1383. [PMID: 30265773 DOI: 10.1002/jbm.b.34229] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2018] [Revised: 08/14/2018] [Accepted: 08/18/2018] [Indexed: 01/11/2023]
Abstract
The proposed work involves an exclusive study on the synthesis protocol, crystal structure analysis, and imaging contrast features of unique lanthanide phosphates (LnPO4 ). XRD and Raman spectra affirmed the ability of the proposed synthesis technique to achieve unique LnPO4 devoid of impurities. The crystal structure analysis confirms the P121/c1 space setting of NdPO4 , EuPO4 , GdPO4 , and TbPO4 that all uniformly crystallizes in monoclinic unit cell. In a similar manner, the tetragonal crystal setting of DyPO4 , ErPO4 , HoPO4 , and YbPO4 that unvaryingly possess the I41/amd space setting is confirmed. Under the same synthesis conditions, the monoclinic (Eu) and tetragonal (Ho) lanthanide phosphates displayed uniform rod-like morphologies. Absorption and luminescence properties of unique LnPO4 were determined. In vitro biological studies demonstrated low toxicity levels of LnPO4 and clearly distinguished fluorescence of TbPO4 and EuPO4 in Y79, retinoblastoma cell lines. The paramagnetic response of GdPO4 , NdPO4 , DyPO4 , TbPO4 , and HoPO4 facilitated excellent magnetic resonance imaging (MRI) contrast features. Meanwhile, GdPO4 , DyPO4 , HoPO4 , and YbPO4 possessing higher X-ray absorption coefficient than clinical contrast Omnipaque™ exhibited high computed tomography (CT) efficiency. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater 107B: 1372-1383, 2019.
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Affiliation(s)
- Rugmani Meenambal
- Centre for Nanoscience and Technology, Pondicherry University, 605014, Puducherry, India
| | - Pavan Poojar
- Medical Imaging Research Centre, Dayananda Sagar Institutions, Bangalore, India
| | - Sairam Geethanath
- Medical Imaging Research Centre, Dayananda Sagar Institutions, Bangalore, India
| | - T S Anitha
- Central Inter-Disciplinary Research Facility, Mahatma Gandhi Medical College and Research Institute, 607403, Puducherry, India
| | - S Kannan
- Centre for Nanoscience and Technology, Pondicherry University, 605014, Puducherry, India
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10
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Organic Soluble LaPO4
:Eu3+
Nanorods: Sensitization of Surface Eu3+
Ions and Phase Transfer in Water. ChemistrySelect 2018. [DOI: 10.1002/slct.201800276] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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11
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Wang Z, Li JG, Zhu Q, Ai Z, Li X, Sun X, Kim BN, Sakka Y. EDTA-assisted phase conversion synthesis of (Gd 0.95RE 0.05)PO 4 nanowires (RE = Eu, Tb) and investigation of photoluminescence. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2017; 18:447-457. [PMID: 28740561 PMCID: PMC5507148 DOI: 10.1080/14686996.2017.1338495] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2017] [Revised: 05/31/2017] [Accepted: 05/31/2017] [Indexed: 05/22/2023]
Abstract
Hexagonal (Gd0.95RE0.05)PO4·nH2O nanowires ~300 nm in length and ~10 nm in diameter have been converted from (Gd0.95RE0.05)2(OH)5NO3·nH2O nanosheets (RE = Eu, Tb) in the presence of monoammonium phosphate (NH4H2PO4) and ethylene diamine tetraacetic acid (EDTA). They were characterized by X-ray diffraction, thermogravimetry, electron microscopy, and Fourier transform infrared and photoluminescence spectroscopies. It is shown that EDTA played an essential role in the morphology development of the nanowires. The hydrothermal products obtained up to 180 °C are of a pure hexagonal phase, while monoclinic phosphate evolved as an impurity at 200 °C. The nanowires undergo hexagonal→monoclinic phase transformation upon calcination at ≥600 °C to yield a pure monoclinic phase at ~900 °C. The effects of calcination on morphology, excitation/emission, and fluorescence decay kinetics were investigated in detail with (Gd0.95Eu0.05)PO4 as example. The abnormally strong 5D0→7F4 electric dipole Eu3+ emission in the hexagonal phosphates was ascribed to site distortion. The process of energy migration was also discussed for the optically active Gd3+ and Eu3+/Tb3+ ions.
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Affiliation(s)
- Zhihao Wang
- Key Laboratory for Anisotropy and Texture of Materials, Northeastern University, Shenyang, China
- Institute for Ceramics and Powder Metallurgy, School of Materials Science and Engineering, Northeastern University, Shenyang, China
- Research Center for Functional Materials, National Institute for Materials Science, Tsukuba, Japan
| | - Ji-Guang Li
- Key Laboratory for Anisotropy and Texture of Materials, Northeastern University, Shenyang, China
- Institute for Ceramics and Powder Metallurgy, School of Materials Science and Engineering, Northeastern University, Shenyang, China
- Research Center for Functional Materials, National Institute for Materials Science, Tsukuba, Japan
- Corresponding author. E-mail:
| | - Qi Zhu
- Key Laboratory for Anisotropy and Texture of Materials, Northeastern University, Shenyang, China
- Institute for Ceramics and Powder Metallurgy, School of Materials Science and Engineering, Northeastern University, Shenyang, China
| | - Zhengrong Ai
- Key Laboratory for Anisotropy and Texture of Materials, Northeastern University, Shenyang, China
| | - Xiaodong Li
- Key Laboratory for Anisotropy and Texture of Materials, Northeastern University, Shenyang, China
- Institute for Ceramics and Powder Metallurgy, School of Materials Science and Engineering, Northeastern University, Shenyang, China
| | - Xudong Sun
- Key Laboratory for Anisotropy and Texture of Materials, Northeastern University, Shenyang, China
- Institute for Ceramics and Powder Metallurgy, School of Materials Science and Engineering, Northeastern University, Shenyang, China
- School of Environmental and Chemical Engineering, Dalian University, Dalian, China
| | - Byung-Nam Kim
- Research Center for Functional Materials, National Institute for Materials Science, Tsukuba, Japan
| | - Yoshio Sakka
- Research Center for Functional Materials, National Institute for Materials Science, Tsukuba, Japan
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12
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Skogareva LS, Shekunova TO, Baranchikov AE, Yapryntsev AD, Sadovnikov AA, Ryumin MA, Minaeva NA, Ivanov VK. Synthesis of cerium orthophosphates with monazite and rhabdophane structure from phosphoric acid solutions in the presence of hydrogen peroxide. RUSS J INORG CHEM+ 2016. [DOI: 10.1134/s0036023616100181] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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13
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Lee Y, Hanif S, Theato P, Zentel R, Lim J, Char K. Facile Synthesis of Fluorescent Polymer Nanoparticles by Covalent Modification-Nanoprecipitation of Amine-Reactive Ester Polymers. Macromol Rapid Commun 2015; 36:1089-95. [DOI: 10.1002/marc.201500003] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2015] [Revised: 02/02/2015] [Indexed: 12/23/2022]
Affiliation(s)
- Yeonju Lee
- The National Creative Research Initiative Center for Intelligent Hybrids; The WCU Program of Chemical Convergence for Energy and Environment; School of Chemical and Biological Engineering; Seoul National University; Seoul 151-744 Korea
| | - Sadaf Hanif
- Institute of Organic Chemistry; University of Mainz; Mainz Germany
| | - Patrick Theato
- Institute for Technical and Macromolecular Chemistry; University of Hamburg; Hamburg Germany
| | - Rudolf Zentel
- Institute of Organic Chemistry; University of Mainz; Mainz Germany
| | - Jeewoo Lim
- The National Creative Research Initiative Center for Intelligent Hybrids; The WCU Program of Chemical Convergence for Energy and Environment; School of Chemical and Biological Engineering; Seoul National University; Seoul 151-744 Korea
| | - Kookheon Char
- The National Creative Research Initiative Center for Intelligent Hybrids; The WCU Program of Chemical Convergence for Energy and Environment; School of Chemical and Biological Engineering; Seoul National University; Seoul 151-744 Korea
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14
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Becerro AI, Ocaña M. Quick synthesis, functionalization and properties of uniform, luminescent LuPO4-based nanoparticles. RSC Adv 2015. [DOI: 10.1039/c5ra05305f] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Nanometric, luminescent Eu:LuPO4 particles quickly (30 min) synthesised in the absence of organic additives and able to form stable colloidal suspensions in aqueous media.
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Affiliation(s)
- Ana I. Becerro
- Instituto de Ciencia de Materiales de Sevilla (CSIC-University of Seville)
- 41092 Seville
- Spain
| | - Manuel Ocaña
- Instituto de Ciencia de Materiales de Sevilla (CSIC-University of Seville)
- 41092 Seville
- Spain
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15
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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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16
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Synergistic effect of bimetal ions (Ce, Pb) incorporation on optical, structural, and sensory activity of ZnO nanocrystals. J Solid State Electrochem 2014. [DOI: 10.1007/s10008-014-2673-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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17
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Debasu ML, Ananias D, Rocha J, Malta OL, Carlos LD. Energy-transfer from Gd(III) to Tb(III) in (Gd,Yb,Tb)PO4 nanocrystals. Phys Chem Chem Phys 2014; 15:15565-71. [PMID: 23942992 DOI: 10.1039/c3cp52365a] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The photoluminescence properties of (Gd,Yb,Tb)PO4 nanocrystals synthesized via a hydrothermal route at 150 °C are reported. Energy-transfer from Gd(3+) to Tb(3+) is witnessed by the detailed analyses of excited-state lifetimes, emission quantum yields, and emission and excitation spectra at room temperature, for Tb(3+) concentrations ranging from 0.5 to 5.0 mol%. Absolute-emission quantum yields up to 42% are obtained by exciting within the (6)I7/2-17/2 (Gd(3+)) manifold at 272 nm. The room temperature emission spectrum is dominated by the (5)D4 → (7)F5 (Tb(3+)) transition at 543 nm, with a long decay-time (3.95-6.25 ms) and exhibiting a rise-time component. The (5)D3 → (7)F6 (Tb(3+)) rise-time (0.078 ms) and the (6)P7/2 → (8)S7/2 (Gd(3+)) decay-time (0.103 ms) are of the same order, supporting the Gd(3+) to Tb(3+) energy-transfer process. A remarkably longer lifetime of 2.29 ms was measured at 11 K for the (6)P7/2 → (8)S7/2 (Gd(3+)) emission upon excitation at 272 nm, while the emission spectrum at 11 K is dominated by the (6)P7/2 → (8)S7/2 transition line, showing that the Gd(3+) to Tb(3+) energy-transfer process is mainly phonon-assisted with an efficiency of ~95% at room temperature. The Gd(3+) to Tb(3+) energy transfer is governed by the exchange mechanism with rates between 10(2) and 10(3) s(-1), depending on the energy mismatch conditions between the (6)I7/2 and (6)P7/2 levels of Gd(3+) and the Tb(3+ 5)I7, (5)F2,3 and (5)H5,6,7 manifolds and the radial overlap integral values.
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Affiliation(s)
- Mengistie L Debasu
- Department of Physics, CICECO, University of Aveiro, 3810-193 Aveiro, Portugal.
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18
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Gai S, Li C, Yang P, Lin J. Recent Progress in Rare Earth Micro/Nanocrystals: Soft Chemical Synthesis, Luminescent Properties, and Biomedical Applications. Chem Rev 2013; 114:2343-89. [DOI: 10.1021/cr4001594] [Citation(s) in RCA: 1120] [Impact Index Per Article: 101.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Shili Gai
- State
Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
- Key
Laboratory of Superlight Materials and Surface Technology, Ministry
of Education, Harbin Engineering University, Harbin, 150001, 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
| | - Piaoping Yang
- Key
Laboratory of Superlight Materials and Surface Technology, Ministry
of Education, Harbin Engineering University, Harbin, 150001, 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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19
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Martín-Rodríguez R, Geitenbeek R, Meijerink A. Incorporation and Luminescence of Yb3+ in CdSe Nanocrystals. J Am Chem Soc 2013; 135:13668-71. [DOI: 10.1021/ja4077414] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Rosa Martín-Rodríguez
- Debye Institute for Nanomaterials Science,
Department of Chemistry, Utrecht University, Princetonplein 5, 3584 CC Utrecht, The Netherlands
| | - Robin Geitenbeek
- Debye Institute for Nanomaterials Science,
Department of Chemistry, Utrecht University, Princetonplein 5, 3584 CC Utrecht, The Netherlands
| | - Andries Meijerink
- Debye Institute for Nanomaterials Science,
Department of Chemistry, Utrecht University, Princetonplein 5, 3584 CC Utrecht, The Netherlands
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20
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Preparation and photoluminescence enhancement of Li+ and Eu3+ co-doped YPO4 hollow microspheres. J RARE EARTH 2013. [DOI: 10.1016/s1002-0721(12)60302-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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21
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Debasu ML, Ananias D, Pinho SLC, Geraldes CFGC, Carlos LD, Rocha J. (Gd,Yb,Tb)PO4 up-conversion nanocrystals for bimodal luminescence-MR imaging. NANOSCALE 2012; 4:5154-5162. [PMID: 22797375 DOI: 10.1039/c2nr31226c] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Up-conversion (Gd,Yb,Tb)PO(4) materials and their potential for bimodal imaging have received little attention in the literature. Herein, we report the first study on the up-conversion emission of (Gd,Yb,Tb)PO(4) nanocrystals synthesized via a hydrothermal method at 150 °C. These materials exhibit ultraviolet, blue and green up-conversion emissions upon excitation with a 980 nm continuous wave laser diode. The intensity of the blue-emission band at 479 nm, ascribed to the cooperative up-conversion emission of a pair of excited Yb(3+) ions, depends on the Yb(3+)/Tb(3+) concentration ratio, calcination temperature and particle size. Strong green up-conversion emission of Tb(3+) is observed at 543 nm for the (5)D(4)→(7)F(5) transition. Relaxometry measurements reveal that the nanocrystals are efficient T(2)-weighted (negative) contrast agents which, combined with visible-light emission generated by infrared excitation, affords them considerable potential for being used in bimodal, photoluminescence-magnetic resonance, imaging.
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Affiliation(s)
- Mengistie L Debasu
- Department of Physics, CICECO, University of Aveiro, 3810-193 Aveiro, Portugal
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22
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Kijkowska R, Malina D, Sobczak-Kupiec A, Wzorek Z, Orlicki R. Effect of Ca on HoPO 4·nH 2O (n = 1 and 2) crystallization from phosphoric acid solution. CRYSTAL RESEARCH AND TECHNOLOGY 2012. [DOI: 10.1002/crat.201200083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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23
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Li X, Gai S, Li C, Wang D, Niu N, He F, Yang P. Monodisperse Lanthanide Fluoride Nanocrystals: Synthesis and Luminescent Properties. Inorg Chem 2012; 51:3963-71. [DOI: 10.1021/ic200925v] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xingbo Li
- Key Laboratory of Superlight Materials and Surface Technology, Ministry
of Education, Harbin Engineering University, Harbin 150001, P. R.
China
| | - Shili Gai
- Key Laboratory of Superlight Materials and Surface Technology, Ministry
of Education, Harbin Engineering University, Harbin 150001, P. R.
China
| | - Chunxia Li
- State Key Laboratory
of Rare
Earth Resource Utilization, Changchun Institute of Applied Chemistry,
Chinese Academy of Sciences, Changchun 130021, P. R. China
| | - Dong Wang
- Key Laboratory of Superlight Materials and Surface Technology, Ministry
of Education, Harbin Engineering University, Harbin 150001, P. R.
China
| | - Na Niu
- Key Laboratory of Superlight Materials and Surface Technology, Ministry
of Education, Harbin Engineering University, Harbin 150001, P. R.
China
| | - Fei He
- Key Laboratory of Superlight Materials and Surface Technology, Ministry
of Education, Harbin Engineering University, Harbin 150001, P. R.
China
| | - Piaoping Yang
- Key Laboratory of Superlight Materials and Surface Technology, Ministry
of Education, Harbin Engineering University, Harbin 150001, P. R.
China
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24
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Gai S, Yang G, Li X, Li C, Dai Y, He F, Yang P. Facile synthesis and up-conversion properties of monodisperse rare earth fluoride nanocrystals. Dalton Trans 2012; 41:11716-24. [DOI: 10.1039/c2dt30954h] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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25
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Radziuk D, Skirtach A, Gessner A, Kumke MU, Zhang W, Möhwald H, Shchukin D. Ultrasonic approach for formation of erbium oxide nanoparticles with variable geometries. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:14472-14480. [PMID: 22022886 DOI: 10.1021/la203622u] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Ultrasound (20 kHz, 29 W·cm(-2)) is employed to form three types of erbium oxide nanoparticles in the presence of multiwalled carbon nanotubes as a template material in water. The nanoparticles are (i) erbium carboxioxide nanoparticles deposited on the external walls of multiwalled carbon nanotubes and Er(2)O(3) in the bulk with (ii) hexagonal and (iii) spherical geometries. Each type of ultrasonically formed nanoparticle reveals Er(3+) photoluminescence from crystal lattice. The main advantage of the erbium carboxioxide nanoparticles on the carbon nanotubes is the electromagnetic emission in the visible region, which is new and not examined up to the present date. On the other hand, the photoluminescence of hexagonal erbium oxide nanoparticles is long-lived (μs) and enables the higher energy transition ((4)S(3/2)-(4)I(15/2)), which is not observed for spherical nanoparticles. Our work is unique because it combines for the first time spectroscopy of Er(3+) electronic transitions in the host crystal lattices of nanoparticles with the geometry established by ultrasound in aqueous solution of carbon nanotubes employed as a template material. The work can be of great interest for "green" chemistry synthesis of photoluminescent nanoparticles in water.
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Affiliation(s)
- Darya Radziuk
- Max-Planck Institute of Colloids and Interfaces, D-14424 Potsdam, Germany.
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26
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27
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Haase M, Schäfer H. Upconverting Nanoparticles. Angew Chem Int Ed Engl 2011; 50:5808-29. [DOI: 10.1002/anie.201005159] [Citation(s) in RCA: 2049] [Impact Index Per Article: 157.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2010] [Revised: 01/21/2011] [Indexed: 12/12/2022]
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28
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Cybinska J, Lorbeer C, Zych E, Mudring AV. Ionic liquid-based synthesis--a low-temperature route to nanophosphates. CHEMSUSCHEM 2011; 4:595-598. [PMID: 21538917 DOI: 10.1002/cssc.201100095] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2011] [Indexed: 05/30/2023]
Affiliation(s)
- Joanna Cybinska
- Anorganische Chemie I--Festkörperchemie und Materialien, Ruhr-Universität Bochum, Universitätsstr. 150, 44780 Bochum, Germany
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29
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Woodward J, Kennel SJ, Stuckey A, Osborne D, Wall J, Rondinone AJ, Standaert RF, Mirzadeh S. LaPO4 Nanoparticles Doped with Actinium-225 that Partially Sequester Daughter Radionuclides. Bioconjug Chem 2011; 22:766-76. [DOI: 10.1021/bc100574f] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jonathan Woodward
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Stephen J. Kennel
- Graduate School of Medicine, University of Tennessee, Knoxville, Tennessee 37920, United States
| | - Alan Stuckey
- Graduate School of Medicine, University of Tennessee, Knoxville, Tennessee 37920, United States
| | - Dustin Osborne
- Graduate School of Medicine, University of Tennessee, Knoxville, Tennessee 37920, United States
| | - Jonathan Wall
- Graduate School of Medicine, University of Tennessee, Knoxville, Tennessee 37920, United States
| | - Adam J. Rondinone
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | | | - Saed Mirzadeh
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
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30
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Yan CH, Yan ZG, Du YP, Shen J, Zhang C, Feng W. Controlled Synthesis and Properties of Rare Earth Nanomaterials. HANDBOOK ON THE PHYSICS AND CHEMISTRY OF RARE EARTHS 2011. [DOI: 10.1016/b978-0-444-53590-0.00004-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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31
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Suzuki S, Teshima K, Wakabayashi T, Nishikiori H, Ishizaki T, Oishi S. Novel fabrication of NIR-vis upconversion NaYF4:Ln (Ln = Yb, Er, Tm) crystal layers by a flux coating method. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c1jm12390d] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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32
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Yaiphaba N, Ningthoujam RS, Singh NR, Vatsa RK. Luminescence Properties of Redispersible Tb3+-Doped GdPO4 Nanoparticles Prepared by an Ethylene Glycol Route. Eur J Inorg Chem 2010. [DOI: 10.1002/ejic.200900968] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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33
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Willinger MG, Clavel G, Di W, Pinna N. A general soft-chemistry route to metal phosphate nanocrystals. J IND ENG CHEM 2009. [DOI: 10.1016/j.jiec.2009.09.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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34
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Catala L, Volatron F, Brinzei D, Mallah T. Functional coordination nanoparticles. Inorg Chem 2009; 48:3360-70. [PMID: 19361238 DOI: 10.1021/ic8012574] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Designing new objects in the perspective of creating useful functionalities at the nanoscale has been the subject of intense research efforts during the last 20 years. Coordination nanoparticles (CNPs) emerged less than 10 years ago, opening new possibilities for the design of bistable molecule-based objects where magnetism may be controlled or tuned by an external perturbation (light irradiation, temperature change, magnetic field, etc.). Magnetic cyanide-bridged networks have been shown to possess the potential to be shaped as nanoparticles, leading to new functionalities. Light- and temperature-induced bistable nanoparticles were thus discovered. Luminescent CNPs were also prepared, demonstrating the large potential of these objects.
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Affiliation(s)
- Laure Catala
- Institut de Chimie Moleculaire et des Materiaux d'Orsay, CNRS, Universite Paris-Sud 11, 91405 Orsay, France
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35
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Luo Q, Shen S, Lu G, Xiao X, Mao D, Wang Y. Synthesis of cubic ordered mesoporous YPO4:Ln3+ and their photoluminescence properties. ACTA ACUST UNITED AC 2009. [DOI: 10.1039/b911464e] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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36
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Bao J, Yu R, Zhang J, Yang X, Wang D, Deng J, Chen J, Xing X. Low-temperature hydrothermal synthesis and structure control of nano-sized CePO4. CrystEngComm 2009. [DOI: 10.1039/b901313j] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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37
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Hickmann K, Kömpe K, Hepp A, Haase M. The role of amines in the growth of terbium(III)-doped cerium phosphate nanoparticles. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2008; 4:2136-2139. [PMID: 18985669 DOI: 10.1002/smll.200800469] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Affiliation(s)
- Katharina Hickmann
- Department of Inorganic Chemistry I, Institute of Chemistry, University of Osnabrück, Barbarastrasse 7, D-49069 Osnabrück, Germany.
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38
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Rill C, Bauer M, Bertagnolli H, Kickelbick G. Microemulsion approach to neodymium, europium, and ytterbium oxide/hydroxide colloids—Effects of precursors and preparation parameters on particle size and crystallinity. J Colloid Interface Sci 2008; 325:179-86. [DOI: 10.1016/j.jcis.2008.05.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2008] [Revised: 05/06/2008] [Accepted: 05/07/2008] [Indexed: 11/27/2022]
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39
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Shen J, Sun LD, Yan CH. Luminescent rare earth nanomaterials for bioprobe applications. Dalton Trans 2008:5687-97. [PMID: 18941653 DOI: 10.1039/b805306e] [Citation(s) in RCA: 218] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Inorganic fluorescent nanoparticles (NPs) have initiated an extensive upsurge in biological application research. Just as quantum dots are regarded as a vigorous reinforcement of the organic dye family, rare earth (RE) fluorescent NPs, as another phosphors branch, also possess unique optical characteristics. The advantages of RE NPs in photostability and colorimetric purity make them suitable for bioprobe applications. Since the preparation technologies have been well developed, it is favourable to prompt the research in the interdisciplinary field of biology and material sciences. Herein, we summarize the synthesis and performance, together with bioprobe applications of RE oxide, sulfoxide, vanadate, phosphate, fluoride, and sodium RE fluoride nanomaterials. The prospects of these promising materials as applied in the biological field is described to draw readers' attention and to attract more research interest.
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Affiliation(s)
- Jie Shen
- 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
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40
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Suljoti E, Nagasono M, Pietzsch A, Hickmann K, Trots DM, Haase M, Wurth W, Föhlisch A. Geometric and electronic structure of lanthanide orthophosphate nanoparticles determined with X-rays. J Chem Phys 2008; 128:134706. [DOI: 10.1063/1.2876360] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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41
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Bo S, Hu J, Wang Q, Liu X, Zhen Z. Near-infrared luminescence properties of erbium complexes with the substituted phthalocyaninato ligands. Photochem Photobiol Sci 2008; 7:474-9. [DOI: 10.1039/b715809b] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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42
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Li C, Quan Z, Yang P, Yang J, Lian H, Lin J. Shape controllable synthesis and upconversion properties of NaYbF4/NaYbF4:Er3+ and YbF3/YbF3:Er3+ microstructures. ACTA ACUST UNITED AC 2008. [DOI: 10.1039/b717363f] [Citation(s) in RCA: 113] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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43
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44
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Di W, Wang X, Zhu P, Chen B. Energy transfer and heat-treatment effect of photoluminescence in Eu3+-doped TbPO4 nanowires. J SOLID STATE CHEM 2007. [DOI: 10.1016/j.jssc.2006.11.006] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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45
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Comby S, Bünzli JCG. Chapter 235 Lanthanide Near-Infrared Luminescence in Molecular Probes and Devices. HANDBOOK ON THE PHYSICS AND CHEMISTRY OF RARE EARTHS 2007. [DOI: 10.1016/s0168-1273(07)37035-9] [Citation(s) in RCA: 97] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
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46
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Liu G, Chen X. Chapter 233 Spectroscopic properties of lanthanides in nanomaterials. HANDBOOK ON THE PHYSICS AND CHEMISTRY OF RARE EARTHS 2007. [DOI: 10.1016/s0168-1273(07)37033-5] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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47
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Buissette V, Giaume D, Gacoin T, Boilot JP. Aqueous routes to lanthanide-doped oxide nanophosphors. ACTA ACUST UNITED AC 2006. [DOI: 10.1039/b508656f] [Citation(s) in RCA: 114] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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48
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Brown SS, Im HJ, Rondinone AJ, Dai S. Facile, alternative synthesis of lanthanum phosphate nanocrystals by ultrasonication. J Colloid Interface Sci 2005; 292:127-32. [PMID: 15961094 DOI: 10.1016/j.jcis.2005.05.039] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2005] [Revised: 05/11/2005] [Accepted: 05/16/2005] [Indexed: 11/28/2022]
Abstract
Highly luminescent, rhabdophane (Ce(0.33)La(0.66))PO4.nH2O nanorods and nanoparticles were prepared in aqueous solutions by ultrasonication, at pH 1 and pH 12, respectively. Both nanorods (5 to 9 nm wide and several tens to several hundreds nm long) and nanoparticles (elongated, connected 5 nm particles) were as small and as uniform as products obtained from methods that utilize complexing agents or surfactants, only with no complexing agent. This method of synthesis by ultrasonication is a fast and simple method and it is expected to be applicable for the synthesis of other nanocrystalline lanthanide phosphates.
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Affiliation(s)
- Suree S Brown
- Chemical Sciences Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, TN 37831-6201, USA
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49
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Bu W, Hua Z, Chen H, Shi J. Epitaxial Synthesis of Uniform Cerium Phosphate One-Dimensional Nanocable Heterostructures with Improved Luminescence. J Phys Chem B 2005; 109:14461-4. [PMID: 16852821 DOI: 10.1021/jp052486h] [Citation(s) in RCA: 104] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Uniform CePO(4)@LaPO(4) and CePO(4):Tb(3+)@LaPO(4) one-dimensional single-crystalline nanocable heterostructures with highly enhanced photoluminescent emission have been synthesized via a mild and simple hydrothermal approach. The resulting one-dimensional single-crystalline nanocable heterostructures have smooth and uniform LaPO(4) sheaths, which is of great significance in effectively eliminating surface trap-states and suppressing the energy quenching in energy-transfer processes. The photoluminescence results for these one-dimensional nanocable heterostructures illustrate that the uniform LaPO(4) sheaths remarkably increase the luminescent efficiency.
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Affiliation(s)
- Wenbo Bu
- State Key Lab of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, People's Republic of China
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50
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Lehmann O, Kömpe K, Haase M. Synthesis of Eu3+-Doped Core and Core/Shell Nanoparticles and Direct Spectroscopic Identification of Dopant Sites at the Surface and in the Interior of the Particles. J Am Chem Soc 2004; 126:14935-42. [PMID: 15535721 DOI: 10.1021/ja031826e] [Citation(s) in RCA: 222] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A variety of redispersible Eu(3+)-doped LaPO(4) nanoparticles have been prepared in a high-boiling coordinating solvent mixture, and the Eu(3+) lattice sites of these materials have been investigated by luminescence line-narrowing measurements. In this spectroscopic method, Eu(3+) ions occupying different lattice sites are selectively excited with a tunable narrow-bandwidth laser system and distinguished by their luminescence spectra ("site-selective spectroscopy"). Depending on the concentration of the dopant, up to three different lattice sites could be identified in the interior of the LaPO(4) nanoparticles. These sites correspond to those known from bulk LaPO(4). In addition, a variety of surface sites is observed, which could be converted completely into bulk sites by overgrowing the nanoparticles with a shell of pure LaPO(4). The surface sites are identical to those obtained by reacting Eu(3+) with the surface of pure LaPO(4) nanoparticles. The spectroscopic properties of Eu(3+)-doped LaPO(4) nanoparticles differ from those of pure EuPO(4) nanoparticles, which were also investigated. Remarkably, the core/shell synthesis investigated in this paper allows one to prepare doped nanoparticles that contain no other dopant sites than those known from the corresponding bulk material.
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Affiliation(s)
- Olaf Lehmann
- Institut für Physikalische Chemie, Universität Hamburg, Bundesstrasse 45, D-20146 Hamburg, Germany
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