NIMTE OpenIR  > 2018专题
Concentration-dependent color tunability of nitrogen-doped carbon dots and their application for iron(III) detection and multicolor bioimaging
Wang, Chan; Hu, Tantan; Wen, Zhuoqi; Zhou, Jingdan; Wang, Xioajie; Wu, Qian; Wang, Chuanxi
2018
Source PublicationJOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume521Pages:33-41
AbstractNitrogen doping can effectly adjust the compositions and structures of carbon dots and hence enhance their fluorescence. In this work, we report a fast and low-cost route for synthesis of nitrogen-doped carbon dots (N-CDs) by microwave pyrolysis of citric acid and ammonium within 7 min. The as-prepared N-CDs contain plentiful oxygen and nitrogen functional groups, and dispaly intense fluorescence with high quantum yield of ca. 44.3% and have an average size of 1.8 nm. The obtained N-CDs exhibit highly stable against photobleaching, ionic strengths, and can be used for selective and sensitive detection of Fe(III). It is postulated that the Fe3+-mediated fluorescence quenching is attributed to the charge transfer between N-CDs and Fe3+. In particular, the emission peaks from blue to red region can be tuned by interparticle distance of N-CDs, simply by increasing the concentration of N-CDs in aqueous solution, which indicates its potential applications as a promising optical image probe in multicolor cellular imaging. (C) 2018 Elsevier Inc. All rights reserved.
KeywordGraphene Quantum Dots Turn-on Sensor Green Synthesis Living Cells Photoluminescence Properties Blue Luminescence Nanodots Emission Fluorescence Mechanism
Subject AreaPhysics
Language英语
Document Type期刊论文
Identifierhttp://ir.nimte.ac.cn/handle/174433/17362
Collection2018专题
Recommended Citation
GB/T 7714
Wang, Chan,Hu, Tantan,Wen, Zhuoqi,et al. Concentration-dependent color tunability of nitrogen-doped carbon dots and their application for iron(III) detection and multicolor bioimaging[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2018,521:33-41.
APA Wang, Chan.,Hu, Tantan.,Wen, Zhuoqi.,Zhou, Jingdan.,Wang, Xioajie.,...&Wang, Chuanxi.(2018).Concentration-dependent color tunability of nitrogen-doped carbon dots and their application for iron(III) detection and multicolor bioimaging.JOURNAL OF COLLOID AND INTERFACE SCIENCE,521,33-41.
MLA Wang, Chan,et al."Concentration-dependent color tunability of nitrogen-doped carbon dots and their application for iron(III) detection and multicolor bioimaging".JOURNAL OF COLLOID AND INTERFACE SCIENCE 521(2018):33-41.
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