Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7668827 | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy | 2018 | 9 Pages |
Abstract
Carboxyfluorescein (FAM) labeled aptamers have strong fluorescence. When no targets d, l-Arg existed, aptamer adsorbed on the negatively charged AuNps and the fluorescence intensity of aptamer was significantly quenched via fluorescence resonance energy transfer (FRET). Once added d, l-Arg into the sensing system, aptamer specifically combined with its targets (d, l-Arg) and scarcely absorbed onto AuNPs, resulted in the fluorescence recovery of aptamer and the aggregation of AuNps. But the recovered fluorescence intensity of l-Arg stronger than its enantiomer, d-Arg.98
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Authors
Haiyan Yuan, Yunmei Huang, Jidong Yang, Yuan Guo, Xiaoqing Zeng, Shang Zhou, Jiawei Cheng, Yuhui Zhang,