Simultaneously enhancing up-conversion fluorescence and red-shifting down-conversion luminescence of

• 作 者: YanyanCui;ZhongboHu;ChunfangZhang;XiangfengLiu;
• 机 构: College of Materials Science and Opto-electronic Technology,University of Chinese Academy of Science
• 出 处: 中国微米纳米技术学会纳米科学技术分会第三届年会暨2014全国纳米生物与医学学术会议
• 发表日期: 2014年期

　　Fluorescent carbon dots(CDs)have attracted great attention in biomedical field owing to the remarkable fluorescence property,low toxicity,and excellent water solubility.Because of the “water window” effect,the CDs with upconversion fluorescence or longer wavelength downconversion fluorescence are particularly more suitable for bioimaging because they can weaken the auto-fluorescence interferences and penetrate the cell or tissue more deeply.In this study,we reported a facile method to simultaneously enhance the upconversion fluorescence and tune the downconversion luminescence of CDs from blue to green light by simply adding H2O2 in a hydrothermal process.