Upconversion nanoparticles grafted molybdenum disulfide nanosheets platform for microcystin-LR sensing

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• 作者：Jiajia Lv^a ; Sen Zhao^a ; Shijia Wu^a ; ^{wusj@jiangnan.edu.cn} ; Zhouping Wang^a ; ^b ; ^{wangzp@jiangnan.edu.cn}
• 关键词：MoS2 ; Upconversion nanoparticles ; Aptamer ; MC-LR
• 刊名：Biosensors and Bioelectronics
• 出版年：2017
• 出版时间：15 April 2017
• 年：2017
• 卷：90
• 期：Complete
• 页码：203-209
• 全文大小：932 K
• 卷排序：90

文摘

In this study, NaYF4:Yb, Tm@NaYF4:Yb nanoparticles with enhanced fluorescence were synthesized. Upconversion nanoparticles and MoS2 was combined by aptamer to form a FAUM nanoplatform for MC-LR detection. To the best of our knowledge, this is the first time to detect MC-LR using energy transfer from enhanced fluorescence of CS-UCNPs to MoS2. The calibration curve for MC-LR detection with an excellent correlation (R2 of 0.9942) was achieved by fluorescence over the range of 0.01–50 ng/ml, and the LOD was calculated to be 0.002 ng/ml. This aptamer-based platform might be a promising strategy for a variety of sensing applications.