文献类型：期刊文献

英文题名：Novel pH sensitive N-doped carbon dots with both long fluorescence lifetime and high quantum yield

作者：Zheng, Cui[1];An, Xueqin[1];Gong, Jun[1]

机构：[1]E China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China

年份：2015

卷号：5

期号：41

起止页码：32319

外文期刊名：RSC ADVANCES

收录：;EI(收录号：20151600757440);WOS:【SCI-EXPANDED(收录号:WOS:000353166300034)】；

基金：This research was supported by the National Natural Science Foundation of China (21473055, 21273073 and 21073063), the National High-Tech R&D (863) Program of China (2011AA06A107). The authors also thank Prof. Jun Hu of East China University of Science and Technology for providing the microwave digestion apparatus.

语种：英文

外文关键词：Carbon - Fluorescence - Optical properties - Doping (additives)

摘要：Novel N-doped carbon dots (CDs) were synthesized. The fluorescent quantum yield of the CDs is up to 93.3%, and the fluorescence lifetime of the CDs is up to 19.50 ns. The optical properties of the CDs in various pH solutions were probed in different ways. The fluorescence characteristics of the CDs depended on change of surface structure, which was associated with pH value.