Synthesis of dye-loaded NaYF4:Yb, Er superparticles for tunable upconversion emissions
Synthesis of dye-loaded NaYF4:Yb, Er superparticles for tunable upconversion emissions
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用于可调上转换发射的负载染料的 NaYF4:Yb、Er 超粒子的合成
DOI:
10.1049/mnl.2014.0471
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发表时间:
2015-03
影响因子:
1.3
通讯作者:
Li, Zhengquan
中科院分区:
文献类型:
--
作者:
Bao, Longyi;Qiao, Ru;Zhang, Yong;Li, Zhengquan
Spherical superparticles consisting of small NaYF4:Yb, Er nanocrystals are developed with an emulsion method. Within each superparticle, many individual upconversion nanocrystals are condensed together and lots of small vacancies are simultaneously produced because of the packing of primary nanocrystals. Through the loading fluorescent dyes inside the vacancies of these superparticles during assembly, one can fine-tune the upconversion fluorescence of these superparticles. Nearly single-band red upconversion emission can also be achieved by loading suitable amounts of dyes in these superparticles.
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