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DICP OpenIR  > 中国科学院大连化学物理研究所  > 期刊论文
学科主题: 物理化学
题名: Enhanced photoluminescence and characterization of multicolor carbon dots using plant soot as a carbon source
作者: Tan, Mingqian1;  Zhang, Lingxin1;  Tang, Rong1;  Song, Xiaojie1;  Li, Yimin2;  Wu, Hao1;  Wang, Yanfang1;  Lv, Guojun1;  Liu, Wanfa2;  Ma, Xiaojun1
通讯作者: 谭明乾 ;  马小军
关键词: Carbon dots ;  Plant soot ;  Fluorescent probes ;  Biolabeling
刊名: TALANTA
发表日期: 2013-10-15
DOI: 10.1016/j.talanta.2013.06.061
卷: 115, 页:950-956
收录类别: SCI
合作性质: 
文章类型: Article
部门归属: 18,7
项目归属: 1802,703
产权排名: 待补充
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Analytical
资助者: 1,1
研究领域[WOS]: Chemistry
英文摘要: Carbon dots (C-dots) are a class of novel fluorescent nanomaterials, which have drawn great attention for their potential applications in bio-nanotechnology. Multicolor C-dots have been synthesized by chemical nitric acid oxidation using the reproducible plant soot as raw material. TEM analysis reveals that the prepared C-dots have an average size of 3.1 nm. The C-dots are well dispersed in aqueous solution and are strongly fluorescent under the irradiation of ultra-violet light. X-ray photoelectron spectroscopy characterization demonstrates that the O/C atomic ratio for C-dots change to from 0.207 to 0.436 due to the chemical oxidation process. The photo bleaching experiment reveals that the C-dots show excellent photostability as compared with the conventional organic dyes, fluorescein and rhodamine B. The fluorescence intensity of the C-dots did not change significantly in the pH range of 3-10. To further enhance the fluorescence quantum yield, the C-dots were surface modified with four types of passivation ligands, 4,7,10-trioxa-1,13-tridecanediamine (TTDDA), poly-L-lysine (PLL), cysteine and chitosan and the fluorescence quantum yields of the TTDDA, PLL, cysteine and chitosan passivated C-dots were improved 1.53-, 5.94-, 2.00- and 3.68-fold, respectively. Fourier-transform infrared (FTIR) spectra were employed to characterize the surface groups of the C-dots. The bio-application of the C-dots as fluorescent bio-probes was evaluated in cell imaging and ex vivo fish imaging, which suggests that the C-dots may have potential applications in biolabeling and bioimaging. (C) 2013 Elsevier B.V. All rights reserved.
关键词[WOS]: QUANTUM DOTS ;  CANDLE SOOT ;  NANOPARTICLES ;  ROUTE ;  FLUORESCENCE ;  FACILE
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000328095600135
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/119629
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Lab Biomed Mat Engn, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Lab Coil Efficiency & Opt Resonator, Dalian 116023, Peoples R China

Recommended Citation:
Tan, Mingqian,Zhang, Lingxin,Tang, Rong,et al. Enhanced photoluminescence and characterization of multicolor carbon dots using plant soot as a carbon source[J]. TALANTA,2013,115:950-956.
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