福建师范大学学报（自然科学版）2017，Vol.33Issue(3)：27-33,7.DOI:10.12046/j.issn.1000-5277.2017.03.005
金纳米棒对β-NaYF4∶Er3+,Yb3+@SiO2纳米颗粒上转换发光的表面等离子增强
Plasmon Enhanced Upconversion and of β-NaYF4 ∶ Er3+,Yb3+@SiO2 Nanoparticles with Au Nanorods
摘要
Abstract
The Au nanorods (NRs) were synthesized by the seed-mediated method.The β-NaYF4∶ Er3+,Yb3 + upconversion nanophosphors were synthesized by the co-precipitation method.The water-soluble β-NaYF4∶ Er3+,Yb3+@SiO2 nanoparticles were prepared from β-NaYF4 ∶ Er3 +,Yb3 + by the StOber method.The influence of doping concentration of Au NRs to red (655 nm) and green (540,520 rm) emission of β-NaYF4∶ Er3+,Yb3+ was also studied.The upconversion luminescence reached maximum while doping concentration of Au NRs was 0.03％.The largest enhancement factors of red and green upconversion emission were 2.75 and 1.66,respectively.The ratio of red and green emissions of the upconversion nanoparticles can be conveniently adjusted by altering the adding amount of Au NRs.Therefore,this kind of nanocomposites can be used as a biological fluorescent labeling,improving the biological identification accuracy greatly.This nanocomposites can be applied in several fields,such as biomedical detection.关键词
上转换/金纳米棒/β-NaYF4∶Er3+,Yb3+/表面等离子激元Key words
upconversion/Au nanorods/β-NaYF4∶Er3 + , Yb3 +/surface plasmon分类
数理科学引用本文复制引用
杨开禧,林林,徐森元,王哲哲,冯卓宏,郑志强..金纳米棒对β-NaYF4∶Er3+,Yb3+@SiO2纳米颗粒上转换发光的表面等离子增强[J].福建师范大学学报（自然科学版）,2017,33(3):27-33,7.基金项目
国家自然科学基金青年基金资助项目(11204039、51202033) （11204039、51202033）
福建省自然科学基金资助项目(2015J01243、2016J01213、2017J01399) （2015J01243、2016J01213、2017J01399）
福建省教育厅科技资助项目(JA13084) （JA13084）
