A "turn-off" luminescence resonance energy transfer aptamer sensor based on near-infrared upconverting NaYF_4:Yb^(3+),Tm^(3+) nanoparticles as donors and gold nanorods as acceptors  

作　　者：Hong-Qi Chen Juan Xu Fei Yuan Yong Wu Yi-Yan Zhang Lun Wang 

机构地区：[1]Anhui Key Laboratory of Chemo-Biosensing,College of Chemistry and Materials Science,Anhui Normal University

出　　处：《Chinese Chemical Letters》2013年第1期79-81,共3页中国化学快报（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(Nos.20905003,21075002, 21245008)

摘　　要：Near-infrared upconverting NaYF4：Yb3＋, Tm3＋ nanophosphors modified with poly（acrylic acid） were prepared and characterized by transmission electron microscopy and luminescence spectroscopy. Based on the observed overlap between the emission spectrum of the NaYF4：Yb3＋, Tm3＋ nanophosphors and the absorption spectrum of the gold nanorods, we believe that a new “turn-off” luminescence resonance energy transfer aptamer sensor was constructed for sensing thrombin in near-infrared region.Near-infrared upconverting NaYF4：Yb3＋, Tm3＋ nanophosphors modified with poly（acrylic acid） were prepared and characterized by transmission electron microscopy and luminescence spectroscopy. Based on the observed overlap between the emission spectrum of the NaYF4：Yb3＋, Tm3＋ nanophosphors and the absorption spectrum of the gold nanorods, we believe that a new “turn-off” luminescence resonance energy transfer aptamer sensor was constructed for sensing thrombin in near-infrared region.

关 键 词：NaYF4：Yb3＋ Tm3＋ nanophosphorsGold nanorodsThrombinNear-infrared 

分 类 号：O657.3[理学—分析化学]