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Luo Y, Li L, Wong HT, Wong KL, Tanner PA. Importance of Volume Ratio in Photonic Effects of Lanthanide-Doped LaPO 4 Nanocrystals. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e1905234. [PMID: 31797530 DOI: 10.1002/smll.201905234] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 11/10/2019] [Indexed: 06/10/2023]
Abstract
Experimental variation of the volume ratio (filling factor: i.e., volume of nanoparticles (NPs) compared with that of medium) of nanocomposite materials with doped lanthanide ions demonstrates that it has a significant affect upon local field effects. Lanthanum orthophosphate NPs are doped with Eu3+ and/or Tb3+ and immersed in organic solvents and lead borate glasses for Tb3+ 5 D4 lifetime measurements. For media with a refractive index (nmed ) less than that of LaPO4 (nnp = 1.79), the 5 D4 emission decay rate increases with increasing volume ratio of the NPs, whereas for nmed > 1.79, the decay rate decreases with increasing volume ratio. Fitting with the model of Pukhov provides an estimation of the radiative lifetime of 5 D4 and the quantum yield. Energy transfer (ET) from Tb3+ to Eu3+ occurs in co-doped LaPO4 NPs with excitation into a Tb3+ absorption band. The ET rate is independent on nmed and the energy transfer efficiency decreases with an increase in nmed . The behavior of ET rate with regard to the local field is consistent with the Dexter, but not Förster, equation for ET rate involving the electric dipole-electric dipole mechanism. This has consequences when using the spectroscopic ruler approach to measure distances between donor-acceptor chromophores.
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Affiliation(s)
- Yuxia Luo
- Department of Chemistry, Hong Kong Baptist University, 224 Waterloo Road, Kowloon, Hong Kong SAR, P. R. China
| | - Liyi Li
- Department of Chemistry, Hong Kong Baptist University, 224 Waterloo Road, Kowloon, Hong Kong SAR, P. R. China
| | - Hon Tung Wong
- Department of Chemistry, Hong Kong Baptist University, 224 Waterloo Road, Kowloon, Hong Kong SAR, P. R. China
| | - Ka-Leung Wong
- Department of Chemistry, Hong Kong Baptist University, 224 Waterloo Road, Kowloon, Hong Kong SAR, P. R. China
| | - Peter A Tanner
- Department of Chemistry, Hong Kong Baptist University, 224 Waterloo Road, Kowloon, Hong Kong SAR, P. R. China
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van Hest JJHA, Blab GA, Gerritsen HC, Donega CDM, Meijerink A. Incorporation of Ln-Doped LaPO4 Nanocrystals as Luminescent Markers in Silica Nanoparticles. NANOSCALE RESEARCH LETTERS 2016; 11:261. [PMID: 27209405 PMCID: PMC4875915 DOI: 10.1186/s11671-016-1465-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Accepted: 05/04/2016] [Indexed: 05/15/2023]
Abstract
Lanthanide ions are promising for the labeling of silica nanoparticles with a specific luminescent fingerprint due to their sharp line emission at characteristic wavelengths. With the increasing use of silica nanoparticles in consumer products, it is important to label silica nanoparticles in order to trace the biodistribution, both in the environment and living organisms.In this work, we synthesized LaPO4 nanocrystals (NCs) with sizes ranging from 4 to 8 nm doped with europium or cerium and terbium. After silica growth using an inverse micelle method, monodisperse silica spheres were obtained with a single LaPO4 NC in the center. We demonstrate that the size of the silica spheres can be tuned in the 25-55 nm range by addition of small volumes of methanol during the silica growth reaction. Both the LaPO4 core and silica nanocrystal showed sharp line emission characteristic for europium and terbium providing unique optical labels in silica nanoparticles of variable sizes.
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Affiliation(s)
- Jacobine J H A van Hest
- Condensed Matter and Interfaces, Debye Institute for Nanomaterials Science, Utrecht University, Princetonplein 5, 3584 CC, Utrecht, The Netherlands
- Molecular Biophysics, Utrecht University, Princetonplein 5, 3584 CC, Utrecht, The Netherlands
| | - Gerhard A Blab
- Molecular Biophysics, Utrecht University, Princetonplein 5, 3584 CC, Utrecht, The Netherlands
| | - Hans C Gerritsen
- Molecular Biophysics, Utrecht University, Princetonplein 5, 3584 CC, Utrecht, The Netherlands
| | - Celso de Mello Donega
- Condensed Matter and Interfaces, Debye Institute for Nanomaterials Science, Utrecht University, Princetonplein 5, 3584 CC, Utrecht, The Netherlands
| | - Andries Meijerink
- Condensed Matter and Interfaces, Debye Institute for Nanomaterials Science, Utrecht University, Princetonplein 5, 3584 CC, Utrecht, The Netherlands.
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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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Mi CC, Tian ZH, Han BF, Mao CB, Xu SK. Microwave-assisted one-pot synthesis of water-soluble rare-earth doped fluoride luminescent nanoparticles with tunable colors. JOURNAL OF ALLOYS AND COMPOUNDS 2012; 525:154-158. [PMID: 22879690 PMCID: PMC3413302 DOI: 10.1016/j.jallcom.2012.02.095] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Polyethyleneimine (PEI) functionalized multicolor luminescent LaF(3) nanoparticles were synthesized via a novel microwave-assisted method, which can achieve fast and uniform heating under eco-friendly and energy efficient conditions. The as-prepared nanoparticles possess a pure hexagonal structure with an average size of about 12 nm. When doped with different ions (Tb(3+) and Eu(3+)), the morphology and structure of the nanoparticles were not changed, whereas the optical properties varied with doped ions and their molar ratio, and as a result emission of four different colors (green, yellow, orange and red) were achieved by simply switching the types of doping ions (Eu(3+) versus Tb(3) +) and the molar ratio of the two doping ions.
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Affiliation(s)
- Cong-Cong Mi
- Department of Chemistry, Northeastern University, Shenyang 110819, PR China
| | - Zhen-huang Tian
- Department of Chemistry, Northeastern University, Shenyang 110819, PR China
| | - Bao-fu Han
- Department of Chemistry, Northeastern University, Shenyang 110819, PR China
| | - Chuan-bin Mao
- Department of Chemistry & Biochemistry, Stephenson Life Sciences Research Center, University of Oklahoma, 101 Stephenson Parkway, Norman, OK 73019, USA
| | - Shu-kun Xu
- Department of Chemistry, Northeastern University, Shenyang 110819, PR China
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Yang R, Qin J, Li M, Liu Y, Li F. Redox hydrothermal synthesis of cerium phosphate microspheres with different architectures. CrystEngComm 2011. [DOI: 10.1039/c1ce05368j] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Chai Z, Gao L, Wang C, Zhang H, Zheng R, Webley PA, Wang H. Synthesis of mesoporous LaPO4 nanostructures with controllable morphologies. NEW J CHEM 2009. [DOI: 10.1039/b902381j] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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