期刊
CHINESE CHEMICAL LETTERS
卷 32, 期 2, 页码 861-865出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.cclet.2020.05.037
关键词
Ba-doped; Carbon dots; Quantum yield; Charge transfer; Fluorescent sensors
资金
- National Natural Science Foundation of China (NSFC) [21805024]
- Science Foundation of China University of Petroleum [2462019QNXZ02, 2462018BJC004]
- Technological Research Program of Chongqing Municipal Education Commission [KJQN202001335]
- Research Program of Yongchuan Science and Technology Commission (Ycstc) [2018nb1402]
This study successfully developed a facile method for preparing barium-doped carbon dots and investigated the surface chemistry and chemical structure of these Ba-CDs. Additionally, the study also revealed the application potential of Ba-CDs as fluorescent probes for detecting trace water in organic solvents.
Long-emission carbon dots (CDs) is triggering immense enthusiasm on account of their intrinsic merits of high chemical stability and excellent optical properties. In this study, a facile and rapid approach was developed for the preparation of barium-doped carbon dots (Ba-CDs) with yellow fluorescence emission and high quantum yields. Surface chemistry and the chemical architecture of the Ba-CDs was revealed under various spectroscopic methods. This work provides more insights into the effects of charge transfer caused by Ba heteroatoms, which is considered as the most challenging step in the investigation on luminescence mechanism. Remarkably, the prepared Ba-CDs were successfully applied as fluorescent probes in the detection of trace water in organic solvents (ethanol, isopropanol, acetone, tetrahydrofuran). Comparing with traditional fluorescent probes for water detection in organic solvents, Ba-CDs detection provides a more sensitive, much faster and more economical approach. (C) 2020 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved.
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