Preparing Colour-Tunable Tannic Acid-Based Carbon Dots by Changing the pH Value of the Reaction System
文献类型： 外文期刊
作者： Li, Yan 1 ; Liu, Can 1 ; Chen, Menglin 1 ; Zheng, Yunwu 1 ; Tian, Hao 3 ; Shi, Rui 2 ; He, Xiahong 2 ; Lin, Xu 1 ;
作者机构： 1.Southwest Forestry Univ, Natl Joint Engn Res Ctr Highly Efficient Utilizat, Kunming 650224, Yunnan, Peoples R China
2.Southwest Forestry Univ, Key Lab Forest Resources Conservat & Utilizat Sou, Minist Educ, Kunming 650224, Yunnan, Peoples R China
3.Yunnan Acad Agr Sci, Agroprod Proc Res Inst, Kunming 650221, Yunnan, Peoples R China
关键词： biomass CDs; solvothermal method; TA; o-phthalaldehyde; W-LED
期刊名称：NANOMATERIALS （ 影响因子：5.719； 五年影响因子：5.81 ）
ISSN：
年卷期： 2022 年 12 卷 17 期
页码：
收录情况： SCI
摘要： Biomass carbon dots (CDs) have the characteristics of being green, nontoxic, inexpensive, and simple to prepare, and they can be used in luminescence-related fields. In this study, red, green, and blue luminescent CDs were synthesised by a simple hydrothermal method under alkaline, neutral, and acidic conditions using TA as carbon source and o-phthalaldehyde as blend. The unique optical properties of these CDs are due to the differences in their degrees of conjugation, which can be controlled by the pH value of the reaction system. These three kinds of biomass CDs have good applications in light-emitting diodes (LEDs). By mixing biomass CDs with epoxy resin, warm, and cold white LEDs with Commission Internationale de l'Elcairage (CIE) coordinates (0.35, 0.36) were successfully constructed on extremely stable multicolour CDs. This study shows that these biomass CDs are a promising material for white LED lighting.
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