摘要
以废弃酒瓶软木塞为原料,采用低成本、简单的水热方法合成碳量子点。通过TEM、FTIR、Raman、UV-Vis、PL光谱对碳量子点的结构和光学性能进行分析表征。结果表明,碳量子点的平均直径为6.2±2.7 nm,PL激发谱和碳量子点表面的官能团有关。用硫酸奎宁作为参考,碳量子点的量子效率为1.54%。将获得的碳量子点应用在骨髓间充质干细胞的细胞生物成像上,发现用碳量子点处理后,骨髓间充质干细胞分别在320~380 nm、450~490 nm和450~490 nm范围显示绿色、黄色和红色荧光,表明了碳量子点在荧光成像领域具有潜在的应用价值。
A low-cost and simple method is reported for the synthesis of carbon nanodots(CDs)from waste wine cork using hy-drothermal treatment.The structural and optical properties of the CDs were characterized by TEM,FTIR,Raman,UV-Vis absorp-tion,and photoluminescence(PL)spectroscopy.Results indicate that the CDs have an average diameter of~6.2±2.7 nm and their excitation-dependent PL is related to the functional groups on their surface.The CDs have a quantum yield of 1.54%,estimated us-ing quinine sulfate as a reference.They have been successfully applied in the bioimaging of mesenchymal stem cells(MSCs).After treatment with the CDs,the MSCs fluoresce green,yellow and red colors under the excitation wavelengths in the ranges 320-380 nm,450-490 nm,and 515-560 nm,respectively,demonstrating their potential use in the field of fluorescence imaging.
出处
《新型炭材料》
SCIE
EI
CAS
CSCD
北大核心
2022年第3期595-602,共8页
New Carbon Materials
基金
越南教育培训部项目(B2021-DHH-05).
关键词
碳点
水热合成
荧光
荧光图像
废酒瓶塞
Carbon nanodots
Hydrothermal synthesis
Fluorescence
Fluorescent image
Waste wine cork
