Upconversion luminescence turning of NaREF₄ (RE=0.4Y+0.4La+0.2 (Yb, Er, Tm)) nanoparticles and their applications for detecting Rhodamine B in shrimp

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• 作者：Shigang HU (胡仕刚)^a ; Yi YU (余 意)^a ; Xiaofeng WU (吴笑峰)^a ; Pan HU (胡 盼)^a ; Huiyi CAO (曹会祎)^a ; Qingyang WU (吴青杨)^a ; Zhijun TANG (唐志军)^a ; Yuanjun GUO (郭源君)^b ; Yunxin LIU (刘云新)^b ; ^{lyunxin@163.com}
• 关键词：nanoparticles ; upconversion luminescence ; in vivo detecting ; organic dyes ; rare earths
• 刊名：Journal of Rare Earths
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：35
• 期：2
• 页码：120-126
• 全文大小：4307 K
• 卷排序：35

文摘

Biocompatible NaREF4 (RE=0.4Y+0.4La+0.2(Yb,Er,Tm)(molar ratio)) upconversion nanoparticles (UCNPs) with strong visible fluorescence were synthesized by a solvothermal method and subsequent surface modification. Modulated upconversion luminescence emission spectra were obtained via changing the doping. In vitro and in vivo bioimagings were carried out with shrimps. The upconversion nanoprobes with an acidic/PEG hybrid ligand could quickly capture the basic Rhodamine-B (RB) in shrimp cells and formed a close UCNPs@RB system. The residual organic dye RB in shrimps could be detected on the basis of luminescent resonance energy transfer (LRET). It could be rapidly addressed based on LRET detection that RB residue existed in the shrimps after incubating in the aqueous solution of RB higher than 3 μg/mL for 12 h.