| Impacts of core-shell structures on properties of lanthanide-based nanocrystals: crystal phase, lattice strain, downconversion, upconversion and energy transfer. | |
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MedLine Citation:
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PMID: 22504768 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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This feature article highlights the new development and current status of rare-earth (RE) based core-shell nanocrystals, which is one of the new classes of hybrid nanostructures. Attractive properties of rare-earth based nanomaterials include extremely narrow emission bands, long lifetimes, large Stoke's shifts, photostability and absence of blinking that can be exploited for biophotonic and photonic applications. Core-shell nanostructures have been attracting a great deal of interest to improve the luminescence efficiency by the elimination of deleterious cross-relaxation. The main focus of this feature article is to address the impacts of core-shell structures on the properties of lanthanide based nanocrystals including crystal phase, lattice strain, downconversion emission, upconversion emission and energy transfer. We describe general synthetic methodologies to design core-shell nanostructure materials. An interesting finding reported is that the local environment of an ion in the core-shell structure significantly affects the modifications of radiative and nonradiative relaxation mechanisms. Finally, a tentative outlook on future developments of this research field is given. Here, we attempt to identify the critical parameters governing the design of luminescent lanthanide based core-shell nanostructures. |
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Authors:
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Arik Kar; Amitava Patra |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-4-16 |
Journal Detail:
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Title: Nanoscale Volume: - ISSN: 2040-3372 ISO Abbreviation: - Publication Date: 2012 Apr |
Date Detail:
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Created Date: 2012-4-16 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101525249 Medline TA: Nanoscale Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Department of Materials Science, Indian Association for the Cultivation of Science, Kolkata 700032, India. msap@iacs.res.in. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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