1
|
Li D, Qian J, Huang L, Zhang Y, Zhu G. Quantum Cutting in KGd(CO 3) 2:Tb 3+ Green Phosphor. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:351. [PMID: 36678104 PMCID: PMC9865050 DOI: 10.3390/nano13020351] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 01/05/2023] [Accepted: 01/13/2023] [Indexed: 06/17/2023]
Abstract
Phosphors with a longer excitation wavelength exhibit higher energy conversion efficiency. Herein, quantum cutting KGd(CO3)2:Tb3+ phosphors excited by middle-wave ultraviolet were synthesized via a hydrothermal method. All the KGd(CO3)2:xTb3+ phosphors remain in monoclinic structures in a large Tb3+ doping range. In the KGd(CO3)2 host, 6D3/2 and 6I17/2 of Gd3+ were employed for quantum cutting in sensitizing levels. The excited state electrons could easily transfer from Gd3+ to Tb3+ with high efficiency. There are three efficient excited bands for quantum cutting. The excited wavelengths of 244, 273, and 283 nm correspond to the transition processes of 8S7/2→6D3/2 (Gd3+), 8S7/2→6I17/2 (Gd3+), and 7F6→5F4 (Tb3+), and the maximum quantum yields of KGd(CO3)2:Tb3+ can reach 163.5, 119, and 143%, respectively. The continuous and efficient excitation band of 273-283 nm can well match the commercial 275 nm LED chip to expand the usage of solid-state light sources. Meanwhile, the phosphor also shows good excitation efficiency at 365 nm in a high Tb3+ doping concentration. Therefore, KGd(CO3)2:Tb3+ is an efficient green-emitting phosphor for ultraviolet-excited solid-state light sources.
Collapse
Affiliation(s)
- Dechuan Li
- School of Physics and Electronic Information, Huaibei Normal University, Huaibei 235000, China
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, Huaibei 235000, China
| | - Jian Qian
- School of Physics and Electronic Information, Huaibei Normal University, Huaibei 235000, China
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, Huaibei 235000, China
| | - Lei Huang
- School of Physics and Electronic Information, Huaibei Normal University, Huaibei 235000, China
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, Huaibei 235000, China
| | - Yumeng Zhang
- School of Physics and Electronic Information, Huaibei Normal University, Huaibei 235000, China
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, Huaibei 235000, China
| | - Guangping Zhu
- School of Physics and Electronic Information, Huaibei Normal University, Huaibei 235000, China
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, Huaibei 235000, China
| |
Collapse
|
2
|
Perala R, Joshi R, Singh BP, Putta VNK, Acharya R, Ningthoujam RS. Brilliant Nonlinear Optical Response of Ho 3+ and Yb 3+ Activated YVO 4 Nanophosphor and Its Conjugation with Fe 3O 4 for Smart Anticounterfeit and Hyperthermia Applications. ACS OMEGA 2021; 6:19471-19483. [PMID: 34368534 PMCID: PMC8340094 DOI: 10.1021/acsomega.1c01572] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 06/30/2021] [Indexed: 06/13/2023]
Abstract
YVO4:Ho3+/Yb3+ nanophosphors prepared by an effective polyol-mediated route show dual-mode behavior in photoluminescence. Upon 980 nm excitation, the upconversion red emission spectrum exhibits a bright red peak at ∼650 nm, characteristic of the electronic transition of the Ho3+ ion via involvement of two-photon absorption, which has been confirmed by the power-dependent luminescence study. Moreover, at 300 nm excitation, downconversion emission peaks are observed at 550, 650, and ∼755 nm. The nonradiative resonant energy transfer occurs from the V-O charge transfer band to Ho3+ ions, resulting in an improved emission of Ho3+ ions. Moreover, polyethylene glycol-coated nanoparticles make it suitable for water dispersibility; and these particles are conjugated with Fe3O4 nanoparticles to form magnetic-luminescent hybrid nanoparticles. Highly water-dispersible magnetic-luminescent hybrid material attained the hyperthermia temperature (∼42 °C) under an applied AC magnetic field. The specific absorption rate value is found to be high (138 W/g), which is more than that of pure superparamagnetic Fe3O4 nanoparticles. At 300 nm excitation, the high quantum yield value of ∼27% is obtained from YVO4:Ho3+/Yb3+, which suggests that it is a good phosphor material. By employing the neutron activation analysis technique, it is shown that nanophosphor particles can absorb Au3+ up to the ppm level. Interestingly, such nanophosphor also shows the potentiality for anticounterfeiting applications.
Collapse
Affiliation(s)
- Ramaswamy
Sandeep Perala
- Department
of Chemistry, GITAM University, Hyderabad 502329, India
- Chemistry
Division, Bhabha Atomic Research Centre, Mumbai 400085, India
- Radiochemistry
Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - Rashmi Joshi
- Chemistry
Division, Bhabha Atomic Research Centre, Mumbai 400085, India
- Homi
Bhabha National Institute, Mumbai 400094, India
| | | | | | - Raghunath Acharya
- Radiochemistry
Division, Bhabha Atomic Research Centre, Mumbai 400085, India
- Homi
Bhabha National Institute, Mumbai 400094, India
| | - Raghumani Singh Ningthoujam
- Chemistry
Division, Bhabha Atomic Research Centre, Mumbai 400085, India
- Homi
Bhabha National Institute, Mumbai 400094, India
| |
Collapse
|
3
|
Jain G, Rocks C, Maguire P, Mariotti D. One-step synthesis of strongly confined, defect-free and hydroxy-terminated ZnO quantum dots. NANOTECHNOLOGY 2020; 31:215707. [PMID: 32155133 DOI: 10.1088/1361-6528/ab72b5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
This paper reports the production of strongly confined ligand-free, defect-free, hydroxy-terminated ZnO quantum dots with a mean diameter of 1.9 nm, by radio frequency atmospheric pressure microplasma. Systematic characterization is performed to understand the surface chemistry of ZnO quantum dots. Photoluminescence studies show strong confinement effect on emission with only ultraviolet (UV) emission without any defect-related visible emission. Emission is again tested after eighteen months and confirms the QDs long-term emission stability. The mechanism responsible for this UV emission is also discussed and originates from OH-related surface terminations.
Collapse
Affiliation(s)
- Gunisha Jain
- Nanotechnology and Integrated Bioengineering centre, Ulster University, Newtownabbey, United Kingdom
| | | | | | | |
Collapse
|
4
|
In-vitro cytotoxicity evaluation of surface design luminescent lanthanide core/shell nanocrystals. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2017.10.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
|
5
|
Luminescent surface-functionalized mesoporous core-shell nanospheres and their cytotoxicity evaluation. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.04.049] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
|
6
|
Ansari AA. Silica-modified luminescent LaPO 4 :Eu@LaPO 4 @SiO 2 core/shell nanorods: Synthesis, structural and luminescent properties. LUMINESCENCE 2018. [PMID: 28816400 DOI: 10.1016/j.solidstatesciences.2017.07.012] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/17/2023]
Abstract
Monoclinic-type tetragonal LaPO4 :Eu (core) and LaPO4 :Eu@LaPO4 (core/shell) nanorods (NRs) were successfully prepared using a urea-based co-precipitation process under ambient conditions. An amorphous silica layer was coated around the luminescent core/shell NRs via the sol-gel process to improve their solubility and colloidal stability in aqueous and non-aqueous media. The prepared nano-products were systematically characterized by X-ray diffraction pattern, transmission electron microscopy, energy dispersive X-ray analysis, and FTIR, UV/Vis, and photoluminescence spectroscopy to examine their phase purity, crystal phase, surface chemistry, solubility and luminescence characteristics. The length and diameter of the nano-products were in the range 80-120 nm and 10-15 nm, respectively. High solubility of the silica-modified core/shell/Si NRs was found for the aqueous medium. The luminescent core NRs exhibited characteristic excitation and emission transitions in the visible region that were greatly affected by surface growth of insulating LaPO4 and silica layers due to the multiphonon relaxation rate. Our luminescence spectral results clearly show a distinct difference in intensities for core, core/shell, and core/shell/Si NRs. Highly luminescent NRs with good solubility could be useful candidates for a variety of photonic-based biomedical applications.
Collapse
Affiliation(s)
- Anees A Ansari
- King Abdullah Institute for Nanotechnology, King Saud University, Riyadh, Kingdom of Saudi Arabia
| |
Collapse
|
7
|
Wang GQ, Li LY, Feng YN, Yu H, Zheng XH. Tb3+- and Yb3+-doped novel KBaLu(MoO4)3 crystals with disordered chained structure showing down- and up-conversion luminescence. CrystEngComm 2018. [DOI: 10.1039/c8ce00461g] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Tb3+/Yb3+ co-doped KBaLu(MoO4)3 with a highly disordered structure consisting of chains induces high color purity of primary green luminescence.
Collapse
Affiliation(s)
- G. Q. Wang
- College of Materials Science and Engineering
- Fuzhou University
- Fuzhou
- People's Republic of China
- Key Laboratory of Eco-materials Advanced Technology
| | - L. Y. Li
- College of Materials Science and Engineering
- Fuzhou University
- Fuzhou
- People's Republic of China
- Key Laboratory of Eco-materials Advanced Technology
| | - Y. N. Feng
- College of Materials Science and Engineering
- Fuzhou University
- Fuzhou
- People's Republic of China
| | - H. Yu
- College of Materials Science and Engineering
- Fuzhou University
- Fuzhou
- People's Republic of China
| | - X. H. Zheng
- College of Materials Science and Engineering
- Fuzhou University
- Fuzhou
- People's Republic of China
| |
Collapse
|
8
|
Ansari AA. Facile Synthesis Method for the Preparation of Large-scale Ultra-small GdPO4
:Tb and GdPO4
:Tb@LaPO4
Nanowires. J CHIN CHEM SOC-TAIP 2017. [DOI: 10.1002/jccs.201700317] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Anees A. Ansari
- King Abdullah Institute for Nanotechnology; King Saud University; Riyadh 11451 Saudi Arabia
| |
Collapse
|
9
|
Ansari AA. Role of surface modification on physicochemical properties of luminescent YPO4:Tb nanorods. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.05.028] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
10
|
Zou X, He L, Tan D, Lei F, Jiang N, Zheng Q, Lin D, Xu C, Liu Y. Anneal-induced transformation of phase structure, morphology and luminescence of GdPO4:Sm3+ nanomaterials synthesized by a hydrothermal method. Dalton Trans 2017; 46:2948-2956. [DOI: 10.1039/c6dt04583a] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
GdPO4·H2O:xSm3+ nanomaterials were synthesized via a facile hydrothermal method and the effects of Sm3+ concentrations and annealing temperature on the crystal structures, morphologies, and luminescent properties were studied.
Collapse
Affiliation(s)
- Xiao Zou
- College of Chemistry and Materials Science
- Sichuan Normal University
- Chengdu 610066
- China
| | - Lihua He
- College of Chemistry and Materials Science
- Sichuan Normal University
- Chengdu 610066
- China
| | - Dihao Tan
- College of Chemistry and Materials Science
- Sichuan Normal University
- Chengdu 610066
- China
| | - Fengying Lei
- College of Chemistry and Materials Science
- Sichuan Normal University
- Chengdu 610066
- China
| | - Na Jiang
- College of Chemistry and Materials Science
- Sichuan Normal University
- Chengdu 610066
- China
| | - Qiaoji Zheng
- College of Chemistry and Materials Science
- Sichuan Normal University
- Chengdu 610066
- China
| | - Dunmin Lin
- College of Chemistry and Materials Science
- Sichuan Normal University
- Chengdu 610066
- China
| | - Chenggang Xu
- College of Chemistry and Materials Science
- Sichuan Normal University
- Chengdu 610066
- China
| | - Yongfu Liu
- Ningbo Institute of Materials Technology and Engineering
- Chinese Academy of Sciences
- Ningbo
- China
| |
Collapse
|
11
|
Ansari AA, Parchur AK, Kumar B, Rai SB. Highly aqueous soluble CaF 2:Ce/Tb nanocrystals: effect of surface functionalization on structural, optical band gap, and photoluminescence properties. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2016; 27:178. [PMID: 27752975 DOI: 10.1007/s10856-016-5791-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Accepted: 10/05/2016] [Indexed: 06/06/2023]
Abstract
The design of nanostructured materials with highly stable water-dispersion and luminescence efficiency is an important concern in nanotechnology and nanomedicine. In this paper, we described the synthesis and distinct surface modification on the morphological structure and optical (optical absorption, band gap energy, excitation, emission, decay time, etc.) properties of highly crystalline water-dispersible CaF2:Ce/Tb nanocrystals (core-nanocrystals). The epitaxial growth of inert CaF2 and silica shell, respectively, on their surface forming as CaF2:Ce/Tb@CaF2 (core/shell) and CaF2:Ce/Tb@CaF2@SiO2 (core/shell/SiO2) nanoarchitecture. X-ray diffraction and transmission electron microscope image shows that the nanocrystals were in irregular spherical phase, highly crystalline (~20 nm) with narrow size distribution. The core/shell nanocrystals confirm that the surface coating is responsible in the change of symmetrical nanostructure, which was determined from the band gap energy and luminescent properties. It was found that an inert inorganic shell formation effectively enhances the luminescence efficiency and silica shell makes the nanocrystals highly water-dispersible. In addition, Ce3+/Tb3+-co-doped CaF2 nanocrystals show efficient energy transfer from Ce3+ to Tb3+ ion and strong green luminescence of Tb3+ ion at 541 nm(5D4→7F5). Luminescence decay curves of core and core/shell nanocrystals were fitted using mono and biexponential equations, and R 2 regression coefficient criteria were used to discriminate the goodness of the fitted model. The lifetime values for the core/shell nanocrystals are higher than core-nanocrystals. Considering the high stable water-dispersion and intensive luminescence emission in the visible region, these luminescent core/shell nanocrystals could be potential candidates for luminescent bio-imaging, optical bio-probe, displays, staining, and multianalyte optical sensing. A newly designed CaF2:Ce/Tb nanoparticles via metal complex decomposition rout shows high dispersibility in aqueous solvents with enhanced photoluminescence. The epitaxial growth of inert CaF2 shell and further amorphous silica, respectively, enhanced their optical and luminescence properties, which is highly usable for luminescent biolabeling, and optical bioprobe etc.
Collapse
Affiliation(s)
- Anees A Ansari
- King Abdullah Institute for Nanotechnology, King Saud University, Riyadh, 11451, Saudi Arabia.
| | - Abdul K Parchur
- Department of Physics, Banaras Hindu University, Varanasi, 221005, India
| | - Brijesh Kumar
- Department of Physics, Banaras Hindu University, Varanasi, 221005, India
| | - S B Rai
- Department of Physics, Banaras Hindu University, Varanasi, 221005, India
| |
Collapse
|
12
|
Okram R, Yaiphaba N, Ningthoujam RS, Singh NR. Is Higher Ratio of Monoclinic to Tetragonal in LaVO4 a Better Luminescence Host? Redispersion and Polymer Film Formation. Inorg Chem 2014; 53:7204-13. [DOI: 10.1021/ic500828s] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Reena Okram
- Department
of Chemistry, Manipur University, Imphal-795003, India
| | | | | | | |
Collapse
|
13
|
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.
Collapse
Affiliation(s)
- Mengistie L Debasu
- Department of Physics, CICECO, University of Aveiro, 3810-193 Aveiro, Portugal.
| | | | | | | | | |
Collapse
|
14
|
Liu Y, Liu G, Dong X, Wang J, Yu W. Luminescence, energy-transfer and tunable color properties of single-component Tb3+ and/or Sm3+ doped NaGd(WO4)2 phosphors with UV excitation for use as WLEDs. RSC Adv 2014. [DOI: 10.1039/c4ra12350f] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Tb3+ and/or Sm3+ codoped NaGd(WO4)2 microcrystals were prepared and energy transfer mechanisms of WO42− → Sm3+ and Tb3+ → Sm3+ were studied. The color-tunable emissions are investigated, for nUV-LED applications.
Collapse
Affiliation(s)
- Yan Liu
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province
- Changchun University of Science and Technology
- Changchun, China
| | - Guixia Liu
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province
- Changchun University of Science and Technology
- Changchun, China
| | - Xiangting Dong
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province
- Changchun University of Science and Technology
- Changchun, China
| | - Jinxian Wang
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province
- Changchun University of Science and Technology
- Changchun, China
| | - Wensheng Yu
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province
- Changchun University of Science and Technology
- Changchun, China
| |
Collapse
|
15
|
Rodriguez-Liviano S, Becerro AI, Alcántara D, Grazú V, de la Fuente JM, Ocaña M. Synthesis and Properties of Multifunctional Tetragonal Eu:GdPO4 Nanocubes for Optical and Magnetic Resonance Imaging Applications. Inorg Chem 2012; 52:647-54. [DOI: 10.1021/ic3016996] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sonia Rodriguez-Liviano
- Instituto de Ciencia de Materiales de Sevilla (CSIC-US), Americo Vespucio 49, Isla de La
Cartuja, 41092 Sevilla, Spain
| | - Ana I. Becerro
- Instituto de Ciencia de Materiales de Sevilla (CSIC-US), Americo Vespucio 49, Isla de La
Cartuja, 41092 Sevilla, Spain
| | - David Alcántara
- Instituto de Nanociencia de Aragon, Universidad de Zaragoza, Mariano Esquillor s/n, Zaragoza, 50018, Zaragoza, Spain
| | - Valeria Grazú
- Instituto de Nanociencia de Aragon, Universidad de Zaragoza, Mariano Esquillor s/n, Zaragoza, 50018, Zaragoza, Spain
| | - Jesus M. de la Fuente
- Instituto de Nanociencia de Aragon, Universidad de Zaragoza, Mariano Esquillor s/n, Zaragoza, 50018, Zaragoza, Spain
| | - Manuel Ocaña
- Instituto de Ciencia de Materiales de Sevilla (CSIC-US), Americo Vespucio 49, Isla de La
Cartuja, 41092 Sevilla, Spain
| |
Collapse
|
16
|
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.
Collapse
Affiliation(s)
- Mengistie L Debasu
- Department of Physics, CICECO, University of Aveiro, 3810-193 Aveiro, Portugal
| | | | | | | | | | | |
Collapse
|
17
|
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]
|
18
|
Grzyb T, Gruszeczka A, Wiglusz RJ, Śniadecki Z, Idzikowski B, Lis S. Multifunctionality of GdPO4:Yb3+,Tb3+ nanocrystals – luminescence and magnetic behaviour. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm34863b] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
|
19
|
Parchur AK, Ningthoujam RS. Preparation, microstructure and crystal structure studies of Li+ co-doped YPO4:Eu3+. RSC Adv 2012. [DOI: 10.1039/c2ra20763j] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
|
20
|
Parchur AK, Prasad AI, Ansari AA, Rai SB, Ningthoujam RS. Luminescence properties of Tb3+-doped CaMoO4 nanoparticles: annealing effect, polar medium dispersible, polymer film and core–shell formation. Dalton Trans 2012; 41:11032-45. [DOI: 10.1039/c2dt31257c] [Citation(s) in RCA: 172] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
|
21
|
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
| | | | | | | |
Collapse
|
22
|
Luwang MN, Ningthoujam RS, Srivastava SK, Vatsa RK. Disappearance and Recovery of Luminescence in Bi3+, Eu3+ Codoped YPO4 Nanoparticles Due to the Presence of Water Molecules Up to 800 °C. J Am Chem Soc 2011; 133:2998-3004. [DOI: 10.1021/ja1092437] [Citation(s) in RCA: 132] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- M. Niraj Luwang
- Department of Chemistry, Manipur University, Imphal-795003, India
| | - R. S. Ningthoujam
- Chemistry Division, Bhabha Atomic Research Center, Mumbai-400085, India
| | - S. K. Srivastava
- Department of Chemistry, Manipur University, Imphal-795003, India
| | - R. K. Vatsa
- Chemistry Division, Bhabha Atomic Research Center, Mumbai-400085, India
| |
Collapse
|
23
|
Parchur AK, Ningthoujam RS, Rai SB, Okram GS, Singh RA, Tyagi M, Gadkari SC, Tewari R, Vatsa RK. Luminescence properties of Eu3+ doped CaMoO4 nanoparticles. Dalton Trans 2011; 40:7595-601. [DOI: 10.1039/c1dt10878f] [Citation(s) in RCA: 138] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
|
24
|
ZHANG W, NI Y, HUANG W, LU C, XU Z. Hydrothermal synthesis, structure study and luminescent properties of YbPO4:Tb3+ nanoparticles. J RARE EARTH 2010. [DOI: 10.1016/s1002-0721(10)60337-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|