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Down-shifting luminescence of water soluble NaYF_4:Eu^(3+)@Ag core-shell nanocrystals for fluorescence turn-on detection of glucose 被引量:10
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作者 Di Wang Ruihong Wang +3 位作者 Lijuan Liu Yang Qu Guofeng Wang Yadong Li 《Science China Materials》 SCIE EI CSCD 2017年第1期68-74,共7页
Techniques for detecting glucose are developing at a breathtaking speed because diabetes mellitus can cause many serious complications, such as blindness, high blood pressure heart disease and kidney failure. Herein, ... Techniques for detecting glucose are developing at a breathtaking speed because diabetes mellitus can cause many serious complications, such as blindness, high blood pressure heart disease and kidney failure. Herein, water sol- uble NaYF4:Eu^3+@Ag core-shell nanocrystals for glucose de- tection with lower detection limit have been successfully de- veloped, using NaYF4:Eu^3+ cores as the energy donors and Ag shells as the efficient quenchers through energy transfer. After immobilization of glucose oxidase (GOx) on the sur- face of NaYF4:Eu^3+@Ag core-shell nanocrystals, the Ag shells can be decomposed in the presence of glucose, accompanied by down-shifting luminescence recovery. The limit of detec- tion of NaYF4:Eu^3+@Ag was 0.12 μmol L^-1. Therefore, the NaYF4:Eu^3+@Ag can be easily extended to the detection of a variety of H2O2-involved analytes. 展开更多
关键词 ^nayf4eu^3+@ag NANOCRYSTALS LUMINESCENCE glu-cose
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