A carbon dots-based fluorescent probe for turn-on sensing of ampicillin

被引：77

作者：

Fu, Yanzhao ^{[1
,2
]}

Zhao, Shaojing ^{[1
]}

Wu, Shuilin ^{[3
,4
]}

Huang, Li ^{[1
]}

Xu, Ting ^{[1
]}

Xing, Xuejian ^{[1
]}

Lan, Minhuan ^{[1
,2
]}

Song, Xiangzhi ^{[1
]}

机构：

[1] Cent South Univ, Coll Chem & Chem Engn, Key Lab Hunan Prov Water Environm & Agr Prod Safe, Changsha 410083, Hunan, Peoples R China

[2] Cent South Univ, Shenzhen Res Inst, Shenzhen 518057, Peoples R China

[3] City Univ Hong Kong, COSDAF, Hong Kong, Peoples R China

[4] City Univ Hong Kong, Dept Mat Sci & Engn, Hong Kong, Peoples R China

来源：

DYES AND PIGMENTS | 2020年 / 172卷

基金：

中国国家自然科学基金; 美国国家科学基金会;

关键词：

Carbon dots; Fluorescent probe; Turn-on; Fe3+; Ampicillin; QUANTUM DOTS; NITROGEN; EXCITATION; CONVERSION; EMISSION; SULFUR;

D O I：

10.1016/j.dyepig.2019.107846

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Carbon dots (CDs) with blue fluorescence were synthesized through hydrothermal treatment of p-dihydroxybenzene and hydrazine hydrate. The fluorescence of the investigated CDs could be selectively quenched by iron ions (Fe3+) because of the strong metal-ligand coordination and electrostatic interactions between the large amount of hydroxyl, amino, and carboxyl groups on CDs' surface and Fe3+. Interestingly, this non-fluorescent CDs + Fe3+ complex displayed a sensitive and selective turn-on fluorescence toward ampicillin with a limit of detection of 0.70 mu M. The sensing process could be observed by naked eyes under the 365 nm UV light irradiation. Importantly, CDs + Fe3+ complex had been successfully applied in the detection of ampicillin in river water.

引用

页数：8

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