Digestive Ripening-Mediated Growth of NaYbF4:Tm@NaYF4 Core-Shell Nanoparticles for Bioimaging

doi:10.1021/acsanm.0c02057

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	Digestive Ripening-Mediated Growth of NaYbF4:Tm@NaYF4 Core-Shell Nanoparticles for Bioimaging
	C. Y. Qi,L. Chen,Y. Gao,Y. Wang,J. Li,L. G. Zhang,Y. S. Luo and X. J. Wang
刊名	Acs Applied Nano Materials
	2020
卷号	3 期号:10 页码:10049-10056
ISSN号	2574-0970
DOI	10.1021/acsanm.0c02057
英文摘要	Size and size distribution control along with the excitation/emission wavelength manipulation are the most indispensable for both fundamental research and applications of upconverting nanophosphors. In contradiction to the usual Ostwald ripening process, digestive ripening-mediated growth of core-shell nanostructures is observed in a lanthanide-doped ternary fluoride system. Time-dependent size evolution of NaYbF4:Tm@NaYF4 nanoparticles is systematically investigated, and a Ksp-involved growth mechanism is proposed to better understand this unusual phenomenon. The upconversion luminescence (UCL) intensity and branch ratio of near-infrared to visible emission (NIR/VIS) dramatically increase due to the NaYF4 coating but subsequently undergo a decline when an additional SiO2 layer grows outside. As a comparison, an alternant type of core-shell-shell nanostructure, NaYbF4:Tm@SiO2@NaYF4, is further constructed, in which both the UCL intensity and NIR/VIS ratio exhibit an inverse trend. The comparative analysis on the basis of steady and transient spectroscopic data from NaYbF4:Tm, and alternatively coated by silica and NaYF4 nanoshells, respectively, demonstrates that the UCL properties can be regulated through core-shell engineering once the optical behavior of the surface states can be manipulated. The results provide a promising alternative strategy to fabricate a uniform core-shell nanostructure with multicompositions, and this NIRin-NIRout luminescent profile deserves an expectable vision for the subsequent clinical applications of UCL imaging for deep biological tissues.
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语种	英语
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/64452]
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	C. Y. Qi,L. Chen,Y. Gao,Y. Wang,J. Li,L. G. Zhang,Y. S. Luo and X. J. Wang. Digestive Ripening-Mediated Growth of NaYbF4:Tm@NaYF4 Core-Shell Nanoparticles for Bioimaging[J]. Acs Applied Nano Materials,2020,3(10):10049-10056.
APA	C. Y. Qi,L. Chen,Y. Gao,Y. Wang,J. Li,L. G. Zhang,Y. S. Luo and X. J. Wang.(2020).Digestive Ripening-Mediated Growth of NaYbF4:Tm@NaYF4 Core-Shell Nanoparticles for Bioimaging.Acs Applied Nano Materials,3(10),10049-10056.
MLA	C. Y. Qi,L. Chen,Y. Gao,Y. Wang,J. Li,L. G. Zhang,Y. S. Luo and X. J. Wang."Digestive Ripening-Mediated Growth of NaYbF4:Tm@NaYF4 Core-Shell Nanoparticles for Bioimaging".Acs Applied Nano Materials 3.10(2020):10049-10056.