One-step synthesis of a dual-emitting carbon dot-based ratiometric fluorescent probe for the visual assay of Pb2+ and PPi and development of a paper sensor

被引：43

作者：

Gao, Yifang ^{[1
,2
]}

Jiao, Yuan ^{[1
,2
]}

Zhang, Huilin ^{[1
,2
]}

Lu, Wenjing ^{[1
,2
]}

Liu, Yang ^{[1
,2
]}

Han, Hui ^{[1
,2
]}

Gong, Xiaojuan ^{[1
,2
]}

Li, Lei ^{[1
,2
,3
]}

Shuang, Shaomin ^{[1
,2
]}

Dong, Chuan ^{[1
,2
]}

机构：

[1] Shanxi Univ, Dept Inst Environm Sci, Taiyuan 030006, Shanxi, Peoples R China

[2] Shanxi Univ, Sch Chem & Chem Engn, Taiyuan 030006, Shanxi, Peoples R China

[3] Univ Pittsburgh, Swanson Sch Engn, Dept Chem & Petr Engn, Pittsburgh, PA 15261 USA

来源：

JOURNAL OF MATERIALS CHEMISTRY B | 2019年 / 7卷 / 36期

基金：

中国国家自然科学基金;

关键词：

QUANTUM DOTS; INORGANIC PYROPHOSPHATE; GREEN SYNTHESIS; RECOGNITION; CONVERSION; NANOHYBRID; EMISSION; CELLS; LIGHT; LEAD;

D O I：

10.1039/c9tb01203f

中图分类号：

TB3 [工程材料学]; R318.08 [生物材料学];

学科分类号：

0805 ; 080501 ; 080502 ;

摘要：

Herein, an easy and effective ratiometric fluorescent nanoprobe for the selective detection of Pb2+ and pyrophosphate (PPi) was developed based on label-free carbon dots (CDs). The CDs showed dual emission bands at 477 and 651 nm under a single-wavelength excitation (391 nm). Pb2+ and PPi were sequentially detected by the sensor with high reliability and accuracy via the exploitation of the fluorescence intensity ratio (F-477/F-651). The dual emission sensor exhibited high selectivity and excellent sensitivity for Pb2+ and PPi than for other analytes with detection limits as low as 0.055 mu M and 0.089 mu M, respectively. Moreover, the fluorescent CDs changed from pink to cyan and from cyan to pink and could be used as a fluorescent paper sensor for the visual detection of Pb2+ and PPi. To the best of our knowledge, this is the first report on the ratiometric fluorescence detection of Pb2+ and PPi by CDs; therefore, the as-synthesized CDs show great potential for application in the determination of Pb2+ and PPi in real samples.

引用

页码：5502 / 5509

页数：8

共 54 条

[1] Bio-photovoltaic conversion device using chlorine-e6 derived from chlorophyll from Spirulina adsorbed on a nanocrystalline TiO2 film electrode [J].