Preparation and Characterization of Nitrogen and Sulfur Doped Green Carbon Dots with Aggregation-induced Emission

被引：0

作者：

Ding L. ^{[1
]}

Kang S. ^{[1
]}

Wang Y. ^{[2
]}

Deng Z.

Zhao Z.

机构：

[1] College of Materials Science and Engineering, Shaanxi University of Technology, Hanzhong

[2] AVIC Shaanxi Aircraft Industry Corporation LTD., Hanzhong

来源：

Faguang Xuebao/Chinese Journal of Luminescence | 2023年 / 44卷 / 11期

关键词：

aggregation-caused quenching; aggregation-induced emission; anti-counterfeiting applications; carbon dots;

D O I：

10.37188/CJL.20230177

中图分类号：

学科分类号：

摘要：

Due to the existence of aggregation-caused quenching（ACQ）effect，the application of carbon dots （CDs）in the solid state field is greatly limited. Herein，a new class of nitrogen/sulfur-doped CDs（G-CDs）with high fluorescence quantum yield（PLQY）and AIE effect are obtained with an eco-friendly，low-cost one-pot solvothermal method，and the structure and properties were analyzed and characterized. G-CDs exhibit blue emission（λ=400 nm）in organic solvents while after adding water，because of AIE effect. G-CDs in the aggregated state manifested as green emission，and the PLQY of the powder was measured to be 48. 6%. With the increase of water concentration，the aggregation fluorescence emission of G-CDs was red-shifted，which confirmed the AIE characteristics of CDs. Based on the unique emission fluorescence and AIE effect，G-CDs have important potential applications in information encryption，ink printing and luminescent lighting. © 2023 Chines Academy of Sciences. All rights reserved.

引用

页码：2002 / 2010

页数：8

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