Work

Semi-quantitative and visual assay of copper ions by fluorescent test paper constructed with dual-emission carbon dots

Year: 2018

Type: article

Abstract: A novel, simple and effective dual-emissive fluorescent probe for the sensitive and selective detection of Cu(ii) has been developed by mixing blue carbon dots and orange carbon dots, with a sensitive detection limit of 7.31 nM. The blue fluorescence can be selectively quenched by Cu(ii), while the orange fluorescence is a internal reference, resulting in a distinguishable fluorescence color change from blue to orange under a UV lamp. Meanwhile, its as-prepared text paper provides a convenient and simple approach for the visual detection of Cu(ii) and successfully applied in real water samples, with a dose-discerning ability as low as 50 nM. The methodology reported here opens a novel pathway toward the real applications of fluorescent test papers.

Source: RSC Advances

DOI: 10.1039/c8ra00917a

Authors: Yifan Wang, Mian Wu, Shaoming Yu, Changlong Jiang

Institutions: Hefei University of Technology, Chinese Academy of Sciences, Institute of Intelligent Machines, State Key Laboratory of Transducer Technology

Language: English

Topic: Carbon and Quantum Dots Applications

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,042

Funders: Deutsche Forschungsgemeinschaft, National Natural Science Foundation of China, National Key Research and Development Program of China