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学科主题: 物理化学
题名: Reduced Carbon Dots versus Oxidized Carbon Dots: Photo- and Electrochemiluminescence Investigations for Selected Applications
作者: Xu, Yang1, 2;  Wu, Ming3, 4;  Feng, Xi-Zeng3, 4;  Yin, Xue-Bo1, 2;  He, Xi-Wen1, 2;  Zhang, Yu-Kui1, 2, 5
通讯作者: Xi-Yin Xuebo ;  Feng Xizeng
关键词: carbon ;  carbon dots ;  electrochemiluminescence ;  photoluminescence ;  sensors
刊名: CHEMISTRY-A EUROPEAN JOURNAL
发表日期: 2013-05-01
DOI: 10.1002/chem.201204372
卷: 19, 期:20, 页:6282-6288
收录类别: SCI
合作性质: 
文章类型: Article
部门归属: 18
项目归属: 1810
产权排名: 待补充
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Multidisciplinary
资助者: 3,6
研究领域[WOS]: Chemistry
英文摘要: The study of the composition, morphology, and surface structure of carbon dots (Cdots) is critical to understanding their effect on the photo- and electrochemiluminescence (PL and ECL) of Cdots in selected applications. Herein, two kinds of Cdots were prepared with 3-(3,4-dihydroxyphenyl)-L-alanine (L-DOPA) as precursor. The Cdots prepared by using a carbonization-extraction strategy have a low oxidation level and are denoted as reduced Cdots (r-Cdots). The Cdots obtained with a carbonization-oxidation process are highly oxidized and are denoted as oxidized Cdots (o-Cdots). The o-Cdots have a carbon core and oxygen-containing loose shell, but the r-Cdots consist mainly of the carbon core. Whereas r-Cdots have a strong blue PL but no apparent ECL response, o-Cdots exhibit a relatively weak PL and strong ECL emission. These properties allow for selected applications of the Cdots. The r-Cdots were used in cell imaging with their high PL emission. The o-Cdots, with their high ECL efficiencies, were selected to sense Cu2+ with Cu2+-inducing ECL quenching in the o-Cdots/K2S2O8 system. This work provides the possibility to control the composition of Cdots for selected applications and shows a good way to characterize surface traps of Cdots because ECL is characterized by the surface-state and PL is mainly related to the core-state in Cdots.
关键词[WOS]: CDTE QUANTUM DOTS ;  IN-VIVO ;  NANOCRYSTALS ;  PHOTOLUMINESCENCE ;  NANOPARTICLES ;  GRAPHITE ;  FACILE ;  CELLS ;  SOOT
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000318365200016
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/119640
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.Nankai Univ, Coll Chem, MOE, State Key Lab Med Chem Biol, Tianjin 300071, Peoples R China
2.Nankai Univ, Coll Chem, MOE, Key Lab Funct Polymer Mat, Tianjin 300071, Peoples R China
3.Nankai Univ, Coll Life Sci, State Key Lab Med Chem Biol, Minist Educ, Tianjin 300071, Peoples R China
4.Nankai Univ, Coll Life Sci, Key Lab Bioact Mat, Minist Educ, Tianjin 300071, Peoples R China
5.Chinese Acad Sci, Dalian Inst Chem Phys, Natl Chromatog R&A Ctr, Dalian 116011, Peoples R China

Recommended Citation:
Xu, Yang,Wu, Ming,Feng, Xi-Zeng,et al. Reduced Carbon Dots versus Oxidized Carbon Dots: Photo- and Electrochemiluminescence Investigations for Selected Applications[J]. CHEMISTRY-A EUROPEAN JOURNAL,2013,19(20):6282-6288.
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