文献类型：期刊文献

英文题名：Easy synthesis of highly fluorescent carbon dots from albumin and their photoluminescent mechanism and biological imaging applications

作者：Hu, Xiaohua[1];An, Xueqin[1];Li, Lielie[1]

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

年份：2016

卷号：58

起止页码：730

外文期刊名：MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS

收录：;EI(收录号：20154001325223);WOS:【SCI-EXPANDED(收录号:WOS:000364247500086)】；

基金：This research was supported by the National High-Tech Research and Development Plan of China ("863" plan, No.2011AA06A107) and the National Nature Science Foundation of China (21473055 and 21273073).

语种：英文

外文关键词：Carbon dots; Novel synthesis method; Photoluminescent mechanism; Biological imaging

摘要：A simple and green approach was developed to synthesize highly fluorescent carbon dots (CDs) using albumin as a carbon source in aqueous solution at room temperature. The CDs were characterized by excellent monodispersion, superior photostability, pH-independent emission, long fluorescence lifetime and high quantum yield (QY). The photoluminescent (PL) mechanism of CDs was explored by means of time-resolved PL decay, and the results revealed that PL originated from the emission of both defect state and intrinsic state. In addition, biological imaging with the application of CDs was carried out in human breast cancer Bcap-37 cell, which demonstrated that CDs were provided with an excellent biocompatiblity, low cytotoxicity and good transmembrane ability. Besides, CDs could be considered as a potential substitute for organic dyes or semiconductor quantum dots (SQDs) in biological imaging. (C) 2015 Elsevier B.V. All rights reserved.