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A fluorescent sensor for detecting dopamine and tyrosinase activity by dual-emission carbon dots and gold nanoparticles
Qu, Fei1,2; Huang, Wei1,2; You, Jinmao1,2,3
2018-02-01
发表期刊COLLOIDS AND SURFACES B-BIOINTERFACES
卷号162页码:212-219
文章类型Article
摘要In this work, we report a fluorescence strategy for detecting dopamine (DA) and sensing tyrosinase (TYR) activity on the basis of the dual-emission carbon dots (DECDs), which contain two emitters: the blue emitters (BE, maximum emission at 385 nm) and yellow emitters (YE, maximum emission at 530 nm). Gold nanoparticles (AuNPs) can effectively quench the two emissions of DECDs. The addition of DA aggregates AuNPs effectively, leading to the fluorescence recovery of dual emitters gradually. This strategy exhibits a high selectivity toward DA and shows good linear ranges, such as 0.5-3 mu M for BE and 0.1-3 mu M for YE. Additionally, the proposed method is successfully applied to the determination of DA in real samples with satisfactory recoveries. Subsequently, this DECDs-AuNPs platform is further taken advantage to assess TYR activity by the aid of TYR's capability for oxidation of DA into dopaquinone, which will not induce the agglomeration of AuNPs, so the fluorescence quenching of DECDs is associated with TYR activity. Finally, the mechanism of the reaction is discussed in detail, and the results suggest that both amine and phenolic hydroxyl groups of DA bring the aggregation of AuNPs. (C) 2017 Elsevier B.V. All rights reserved.
关键词Dual-emission Carbon Dots Gold Nanoparticles Dopamine Tyrosinase Activity
WOS标题词Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences ; Technology
DOI10.1016/j.colsurfb.2017.11.055
关键词[WOS]GRAPHENE QUANTUM DOTS ; NANODOTS ; PROBE ; NANOCLUSTERS ; STRATEGY ; CELLS ; WATER ; ASSAY
收录类别SCI
语种英语
项目资助者National Natural Science Foundation of China(21405093) ; Scientific Research Foundation of Qufu Normal University(BSQD20130117)
WOS研究方向Biophysics ; Chemistry ; Materials Science
WOS类目Biophysics ; Chemistry, Physical ; Materials Science, Biomaterials
WOS记录号WOS:000425076500025
引用统计
被引频次:32[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://210.75.249.4/handle/363003/13331
专题中国科学院西北高原生物研究所
作者单位1.Qufu Normal Univ, Key Lab Life Organ Anal, Qufu 273165, Shandong, Peoples R China
2.Qufu Normal Univ, Key Lab Pharmaceut Intermediates & Anal Nat Med, Qufu 273165, Shandong, Peoples R China
3.Chinese Acad Sci, Northwest Inst Plateau Biol, Xining 810001, Qinghai, Peoples R China
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Qu, Fei,Huang, Wei,You, Jinmao. A fluorescent sensor for detecting dopamine and tyrosinase activity by dual-emission carbon dots and gold nanoparticles[J]. COLLOIDS AND SURFACES B-BIOINTERFACES,2018,162:212-219.
APA Qu, Fei,Huang, Wei,&You, Jinmao.(2018).A fluorescent sensor for detecting dopamine and tyrosinase activity by dual-emission carbon dots and gold nanoparticles.COLLOIDS AND SURFACES B-BIOINTERFACES,162,212-219.
MLA Qu, Fei,et al."A fluorescent sensor for detecting dopamine and tyrosinase activity by dual-emission carbon dots and gold nanoparticles".COLLOIDS AND SURFACES B-BIOINTERFACES 162(2018):212-219.
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