Lighting up of carbon dots for copper(ii) detection using an aggregation-induced enhanced strategy
Literature Information
Publication Date
2021-12-23
DOI
10.1039/D1AN02147H
Impact Factor
4.616
Authors
Long Chuan Zhang, Yu Meng Yang, Ling Liang, Yong Jian Jiang, Chun Mei Li, Yuan Fang Li, Lei Zhan, Hong Yan Zou
View Original
Abstract
Carbon dots have promising prospects for analytical and monitoring purposes, but are greatly hindered by the aggregation-induced luminescence quenching owing to the π–π interaction or the non-radiation-excited radical complex formation. Herein hydrothermally prepared orange-yellow fluorescent carbon dots (O-CDs) show an aggregation-induced fluorescence enhancement (AIFE) with Cu2+ owing to the complexation of Cu(II) and the O-CDs. Cu2+ was then sensitively and selectively detected in the linear range from 0.02 to 30 μM with the detection limit of 14 nM, making the detection of Cu2+ in fresh water and E. coli lysate successful, showing that the as-prepared O-CDs could be well applied to the environmental monitoring of heavy metals.
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