家蚕
光致发光
材料科学
碳纤维
丝绸
热液循环
发光
纳米技术
氮气
水热合成
量子产额
兴奋剂
量子点
化学工程
有机化学
化学
光电子学
荧光
复合材料
生物化学
物理
量子力学
复合数
工程类
基因
作者
Zhu Wu,Pu Zhang,Mingxuan Gao,Chun Fang Liu,Wei Wang,Fei Leng,Cheng Huang
摘要
Nitrogen-doped carbon dots (CDs) have attracted great interest due to their extraordinary properties, especially their enhanced emission efficiency, and thus a facile synthesis of nitrogen-doped CDs with high emission efficiency is critical for practical applications. To improve the emission efficiency of CDs, herein we employed Bombyx mori silk, which has high nitrogen content, as a raw material to prepare photoluminescent nitrogen-doped carbon dots through one-pot hydrothermal synthesis, and found that the as-prepared CDs have a photoluminescence (PL) quantum yield of 13.9%, and display amphoteric properties depending on the pH, are highly photostable, have low toxicity and are suitable for bioimaging.
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