Regulating the color output and simultaneously enhancing the intensity of upconversion nanoparticles via a dye sensitization strategy

doi:10.1039/c9tc02293g

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	Regulating the color output and simultaneously enhancing the intensity of upconversion nanoparticles via a dye sensitization strategy
	B.Xue; D.Wang; Y.L.Zhang; J.Zuo; Y.L.Chang; L.P.Tu; X.M.Liu
	2019
发表期刊	Journal of Materials Chemistry C
ISSN	2050-7526
卷号	7 期号:28 页码:8607-8615
摘要	Color-modulated upconversion nanoparticles (UCNPs) have garnered widespread optical applications owing to their superior properties, including low auto-fluorescence background noise, large anti-Stokes shift, and distinguishable sharp emission bands. Recent success in multicolor alteration of UCNPs has mostly relied on the cross-relaxation between activators and other elements, which allows them to perform excellently in optical encoding and bioimaging. However, the color modulation is subject to the cross-relaxation strategy, which heavily weakens the original emission intensity of the activators. Herein, we report a dye-sensitization strategy of conjugating strong near-infrared absorptive dyes on the surface of UCNPs. It was proven that dye sensitization can manipulate the red to green (R/G) emission ratio of NaYF4:Yb/Er@NaYF4: Nd UCNPs and simultaneously enhance their luminescence intensity. The R/G emission ratio can be tuned to increase or decrease, benefiting from the dye sensitization strategy. Proof of concept was demonstrated for anti-counterfeiting application under orthogonal excitation of 808 nm and 980 nm.
关键词	energy migration,luminescence,emission,mechanism,nanocrystals,dynamics,ions,Materials Science,Physics
DOI	10.1039/c9tc02293g
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收录类别	SCI ; EI
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/62904
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	B.Xue,D.Wang,Y.L.Zhang,et al. Regulating the color output and simultaneously enhancing the intensity of upconversion nanoparticles via a dye sensitization strategy[J]. Journal of Materials Chemistry C,2019,7(28):8607-8615.
APA	B.Xue.,D.Wang.,Y.L.Zhang.,J.Zuo.,Y.L.Chang.,...&X.M.Liu.(2019).Regulating the color output and simultaneously enhancing the intensity of upconversion nanoparticles via a dye sensitization strategy.Journal of Materials Chemistry C,7(28),8607-8615.
MLA	B.Xue,et al."Regulating the color output and simultaneously enhancing the intensity of upconversion nanoparticles via a dye sensitization strategy".Journal of Materials Chemistry C 7.28(2019):8607-8615.

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