光致发光
生物相容性
纳米材料
碳纤维
量子产额
材料科学
纳米技术
纳米结构
热液循环
量子点
发光
基因传递
产量(工程)
化学工程
化学
基因
光电子学
荧光
复合材料
复合数
生物化学
工程类
物理
遗传增强
量子力学
冶金
作者
Liming Hu,Yun Sun,Shengliang Li,Xiaoli Wang,Kelei Hu,Lirong Wang,Xing‐Jie Liang,Yan Wu
出处
期刊:Carbon
[Elsevier]
日期:2013-10-24
卷期号:67: 508-513
被引量:223
标识
DOI:10.1016/j.carbon.2013.10.023
摘要
Carbon dots (CD) are luminescent nanomaterial with unique properties that show great potential in many applications. Herein, branched polyethyleneimine-based carbon dots (PCD) are prepared from branched polyethyleneimine by oxidation and a modified hydrothermal reaction. Structure and composition analysis indicate that obtained PCD possesses a 3–4 nm in diameter and a graphitic structure with lattice spacing of 0.30 nm. The PCD has a quantum yield of 54.3%. The bright photoluminescence shows that it can be used for cell imaging. The PCD exhibits extremely good biocompatibility and can be applied for gene delivery. Because of its specific nanostructure and photoluminescence property, the multifunctional PCD prepared shows potential for applications in bioimaging and gene delivery.
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