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Reversible Phase Transfer of Carbon Dots between an Organic Phase and Aqueous Solution Triggered by CO2
Pei, Xiaoyan1; Xiong, Dazhen1; Wang, Huiyong1; Gao, Shuaiqi1; Zhang, Xinying1; Zhang, Suojiang2; Wang, Jianji1
2018-03-26
发表期刊ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
ISSN1433-7851
卷号57期号:14页码:3687-3691
摘要Carbon dots (CDs) have attracted increasing attention in applications such as bio-imaging, sensors, catalysis, and drug delivery. However, unlike metallic and semiconductor nanoparticles, the transfer of CDs between polar and non-polar phases is little understood. A class of amine-terminated CDs is developed and their phase transfer behavior has been investigated. It is found that these CDs can reversibly transfer between aqueous and organic solvents by alternatively bubbling and removing CO2 at atmospheric pressure. The mechanism of such CO2-switched phase transfer involves reversible acid-base reaction of amine-terminated CDs with CO2 and the reversible formation of hydrophilic ammonium salts. By using the CDs as catalysts, the phase transfer is applied in the Knoevenagel reaction for efficient homogeneous reaction, heterogeneous separation, and recycling of the catalysts.
关键词Carbon Dioxide Carbon Dots Condensation Reactions Homogeneous Catalysis Reversible Phase Transfer
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
DOI10.1002/anie.201800037
收录类别SCI
语种英语
关键词[WOS]CORE-SHELL NANOPARTICLES ; KNOEVENAGEL CONDENSATION ; HETEROGENEOUS CATALYSIS ; NANODOTS ; WATER ; INTERFACES ; OIL ; ELECTRONICS ; FABRICATION ; TRANSITION
WOS研究方向Chemistry
WOS类目Chemistry, Multidisciplinary
项目资助者111 Project ; National Natural Science Foundation of China(U1704251 ; National Key Research and Development Program of China(2017YFA0403101) ; 21603063 ; 21673068)
WOS记录号WOS:000428350100025
引用统计
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/24189
专题多相复杂系统国家重点实验室
作者单位1.Henan Normal Univ, Sch Chem & Chem Engn, Collaborat Innovat Ctr Henan Prov Green Mfg Fine, Key Lab Green Chem Media & React,Minist Educ, Xinxiang 453007, Henan, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Beijing Key Lab Ion Liquids Clean Proc, Beijing 100190, Peoples R China
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GB/T 7714
Pei, Xiaoyan,Xiong, Dazhen,Wang, Huiyong,et al. Reversible Phase Transfer of Carbon Dots between an Organic Phase and Aqueous Solution Triggered by CO2[J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,2018,57(14):3687-3691.
APA Pei, Xiaoyan.,Xiong, Dazhen.,Wang, Huiyong.,Gao, Shuaiqi.,Zhang, Xinying.,...&Wang, Jianji.(2018).Reversible Phase Transfer of Carbon Dots between an Organic Phase and Aqueous Solution Triggered by CO2.ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,57(14),3687-3691.
MLA Pei, Xiaoyan,et al."Reversible Phase Transfer of Carbon Dots between an Organic Phase and Aqueous Solution Triggered by CO2".ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 57.14(2018):3687-3691.
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