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Yan T, Zhang D, Xi D, Zhao Y, Wang C, Jiang R, Xu Y. Pressure-Induced Structural Phase Transitions and Photoluminescence Properties of Micro/Nanocrystals HoF 3. Inorg Chem 2024; 63:20562-20571. [PMID: 39403941 DOI: 10.1021/acs.inorgchem.4c03175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/29/2024]
Abstract
HoF3 crystals of varying sizes and morphologies were synthesized by controlling the amount of water. As the water content gradually decreased, the size of the crystals reduced, transforming from microcrystals to approximately 100 nm nanocrystals with unique morphologies. At room temperature, the pressure-induced phase transitions, and photoluminescence (PL) properties of HoF3 micro/nanocrystals are studied using in situ high-pressure PL technique. The PL spectra show that the HoF3 micro/nanocrystals exhibit two structural phase transformations at 5 (6 GPa for NCs) and 12 GPa. Nanoparticles have higher fluorescence intensity, which initially increases and then decreases with changes in pressure. Based on first-principles calculations, HoF3 transforms from an orthorhombic structure to a hexagonal structure during the phase transition, with the coordination number of holmium atoms increasing from 9 to 11. The high-pressure Raman spectra on lattice modes also confirmed the existence of the two phase transitions. This work not only provides precise structural changes but also facilitates the understanding of two typical structures of rare-earth trifluoride (REF3), which may play an important role in the application of the RE family.
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Affiliation(s)
- Tingting Yan
- School of Science, Shenyang Jianzhu University, Shenyang 110168, China
- School of Civil Engineering, Shenyang Jianzhu University, Shenyang 110168, China
| | - Dandan Zhang
- School of Civil Engineering, Shenyang Jianzhu University, Shenyang 110168, China
| | - Dongyang Xi
- School of Science, Shenyang Jianzhu University, Shenyang 110168, China
| | - Yu Zhao
- School of Science, Shenyang Jianzhu University, Shenyang 110168, China
| | - Chengyu Wang
- Colledge of Science, Shenyang University of Chemical Technology, Shenyang 110142, China
| | - Ran Jiang
- School of Science, Shenyang Jianzhu University, Shenyang 110168, China
| | - Yifei Xu
- School of Science, Shenyang Jianzhu University, Shenyang 110168, China
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Zhu H, Ding X, Wang C, Cao M, Yu B, Cong H, Shen Y. Preparation of rare earth-doped nano-fluorescent materials in the second near-infrared region and their application in biological imaging. J Mater Chem B 2024; 12:1947-1972. [PMID: 38299679 DOI: 10.1039/d3tb01987j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2024]
Abstract
Second near-infrared (NIR-II) fluorescence imaging (FLI) has gained widespread interest in the biomedical field because of its advantages of high sensitivity and high penetration depth. In particular, rare earth-doped nanoprobes (RENPs) have shown completely different physical and chemical properties from macroscopic substances owing to their unique size and structure. This paper reviews the synthesis methods and types of RENPs for NIR-II imaging, focusing on new methods to enhance the luminous intensity of RENPs and multi-band imaging and multi-mode imaging of RENPs in biological applications. This review also presents an overview of the challenges and future development prospects based on RENPs in NIR-II regional bioimaging.
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Affiliation(s)
- Hetong Zhu
- College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao, 266071, China.
| | - Xin Ding
- College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao, 266071, China.
| | - Chang Wang
- College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao, 266071, China.
| | - Mengyu Cao
- College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao, 266071, China.
| | - Bing Yu
- College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao, 266071, China.
- State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao 266071, China
| | - Hailin Cong
- College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao, 266071, China.
- State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao 266071, China
- School of Materials Science and Engineering, Shandong University of Technology, Zibo 255000, China.
| | - Youqing Shen
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, Center for Bionanoengineering, and Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, China
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