Photoinduced Electron Transfer Mediated by Coordination between Carboxyl on Carbon Nanodots and Cu2+ Quenching Photoluminescence

doi:10.1021/acs.jpcc.7b12681

	Photoinduced Electron Transfer Mediated by Coordination between Carboxyl on Carbon Nanodots and Cu2+ Quenching Photoluminescence
	Liu, Cui 1,2,5; Tang, Bo 1,2; Zhang, Song 3,4; Zhou, Miaomiao 3,4; Yang, Mengli 1,2; Liu, Yufei 5; Zhang, Zhi-Ling 1,2; Zhang, Bing 3,4; Pang, Dai-Wen 1,2
刊名	JOURNAL OF PHYSICAL CHEMISTRY C
	2018-02-15
卷号	122 期号:6 页码:3662-3668
ISSN号	1932-7447
DOI	10.1021/acs.jpcc.7b12681
文献子类	Article
英文摘要	Carbon nanodots (C-dots) have been widely used in sensing, such as detection of ions, small molecules and biomolecules, based on their photoluminescence (PL) quenching by metal ions. Though C-dots prepared by different methods exhibited various sensitives to metal ions, it is labor intensiveness and time-consuming for selecting synthetic route to obtain C dots that meet requirements of practical applications. Hence, for the high selective and sensitive applications of C-dots, it is the effective approach to reveal the structure-property relationships in the quenching process. Herein, we present an insight into the mechanism of the PL quenching of C-dots by Cu2+. According to the results of PL, UV-vis absorption, time-resolved PL, and femtosecond transient absorbance measurements, we confirmed that the quenching occurs by a photoinduced electron transfer (PET) process from the photoexcited C-dots to the empty d orbits of Cu2+ combining with C-dots. Meanwhile, through separate protecting functional groups on the surface of C-dots, the structure of C-dots coordinating with Cu" is revealed to be carboxyl rather than hydroxyl groups. This study leads to a better understanding of the quenching of C-dots and takes an important step toward more rational design of C-dots-based sensor with high performance.
WOS关键词	QUANTUM DOTS ; SENSITIVE DETECTION ; COPPER IONS ; FLUORESCENCE ; COMPLEX ; PROBES ; LUMINESCENCE ; POLYMER ; SENSOR ; CELLS
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000425571100051
资助机构	National Natural Science Foundation of China(21535005 ; National Natural Science Foundation of China(21535005 ; 111 Project(111-2-10) ; 111 Project(111-2-10) ; National Key Research and Development Program of China(2016YFE0125200) ; National Key Research and Development Program of China(2016YFE0125200) ; Collaborative Innovation Center for Chemistry and Molecular Medicine ; Collaborative Innovation Center for Chemistry and Molecular Medicine ; 11674355) ; 11674355) ; National Natural Science Foundation of China(21535005 ; National Natural Science Foundation of China(21535005 ; 111 Project(111-2-10) ; 111 Project(111-2-10) ; National Key Research and Development Program of China(2016YFE0125200) ; National Key Research and Development Program of China(2016YFE0125200) ; Collaborative Innovation Center for Chemistry and Molecular Medicine ; Collaborative Innovation Center for Chemistry and Molecular Medicine ; 11674355) ; 11674355) ; National Natural Science Foundation of China(21535005 ; National Natural Science Foundation of China(21535005 ; 111 Project(111-2-10) ; 111 Project(111-2-10) ; National Key Research and Development Program of China(2016YFE0125200) ; National Key Research and Development Program of China(2016YFE0125200) ; Collaborative Innovation Center for Chemistry and Molecular Medicine ; Collaborative Innovation Center for Chemistry and Molecular Medicine ; 11674355) ; 11674355) ; National Natural Science Foundation of China(21535005 ; National Natural Science Foundation of China(21535005 ; 111 Project(111-2-10) ; 111 Project(111-2-10) ; National Key Research and Development Program of China(2016YFE0125200) ; National Key Research and Development Program of China(2016YFE0125200) ; Collaborative Innovation Center for Chemistry and Molecular Medicine ; Collaborative Innovation Center for Chemistry and Molecular Medicine ; 11674355) ; 11674355)
内容类型	期刊论文
源URL	[http://ir.wipm.ac.cn/handle/112942/12850]
专题	中国科学院武汉物理与数学研究所
通讯作者	Zhang, Song; Zhang, Zhi-Ling
作者单位	1.Wuhan Univ, Key Lab Analyt Chem Biol & Med, Minist Educ, Coll Chem & Mol Sci,State Key Lab Virol,Inst Adv, 299 Bayi Rd, Wuhan 430072, Hubei, Peoples R China 2.Wuhan Univ, Wuhan Inst Biotechnol, 299 Bayi Rd, Wuhan 430072, Hubei, Peoples R China 3.Chinese Acad Sci, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan Inst Phys & Math, 30 Xiaohongshanxi, Wuhan 430071, Hubei, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Chongqing Univ, Key Lab Optoelect Technol & Syst, Minist Educ, Ctr Intelligent Sensing Technol,Coll Optoelect En, 174 Shazhengjie, Chongqing 400044, Peoples R China
推荐引用方式 GB/T 7714	Liu, Cui,Tang, Bo,Zhang, Song,et al. Photoinduced Electron Transfer Mediated by Coordination between Carboxyl on Carbon Nanodots and Cu2+ Quenching Photoluminescence[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2018,122(6):3662-3668.
APA	Liu, Cui.,Tang, Bo.,Zhang, Song.,Zhou, Miaomiao.,Yang, Mengli.,...&Pang, Dai-Wen.(2018).Photoinduced Electron Transfer Mediated by Coordination between Carboxyl on Carbon Nanodots and Cu2+ Quenching Photoluminescence.JOURNAL OF PHYSICAL CHEMISTRY C,122(6),3662-3668.
MLA	Liu, Cui,et al."Photoinduced Electron Transfer Mediated by Coordination between Carboxyl on Carbon Nanodots and Cu2+ Quenching Photoluminescence".JOURNAL OF PHYSICAL CHEMISTRY C 122.6(2018):3662-3668.