| Monodisperse Mesocrystals of YF(3) and Ce(3+) /Ln(3+) (Ln=Tb, Eu) Co-Activated YF(3) : Shape Control Synthesis, Luminescent Properties, and Biocompatibility. | |
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MedLine Citation:
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PMID: 22431147 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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A family of monodisperse YF(3) , YF(3) :Ce(3+) and YF(3) :Ce(3+) /Ln(3+) (Ln=Tb, Eu) mesocrystals with a morphology of a hollow spindle can be synthesized by a solvothermal process using yttrium nitrate and NH(4) F as precursors. The effects of reaction time, fluorine source, solvents, and reaction temperature on the synthesis of these mesocrystals have been studied in detail. The results demonstrate that the formation of a hollow spindle-like YF(3) can be ascribed to a nonclassical crystallization process by means of a particle-based reaction route in ethanol. It has been shown that the fluorine sources selected have a remarkable effect on the morphologies and crystalline phases of the final products. Moreover, the luminescent properties of Ln(3+) -doped and Ce(3+) /Ln(3+) -co-doped spindle-like YF(3) mesocrystals were also investigated. It turns out that Ce(3+) is an efficient sensitizer for Ln(3+) in the spindle-like YF(3) mesocrystals. Remarkable fluorescence enhancement was observed in Ce(3+) /Ln(3+) -co-doped YF(3) mesocrystals. The mechanism of the energy transfer and electronic transition between Ce(3+) and Ln(3+) in the host material of YF(3) mesocrystals was also explored. The cytotoxicity study revealed that these YF(3) -based nanocrystals are biocompatible for applications, such as cellular imaging. |
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Authors:
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Sheng-Liang Zhong; Yang Lu; Min-Rui Gao; Shu-Juan Liu; Jun Peng; Le-Cheng Zhang; Shu-Hong Yu |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-3-19 |
Journal Detail:
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Title: Chemistry (Weinheim an der Bergstrasse, Germany) Volume: - ISSN: 1521-3765 ISO Abbreviation: - Publication Date: 2012 Mar |
Date Detail:
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Created Date: 2012-3-20 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9513783 Medline TA: Chemistry Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. |
Affiliation:
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Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemistry, The National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui 230026 (China), Fax: (+86) 551 3603040; College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022 (P. R. China). |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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