Proton Shuttle-Assisted Surface Reconstruction toward Nonpolar Facets-Terminated Zinc-Blende CdSe/CdS Core/Shell Quantum Dots
2023
发表期刊JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (IF:14.4[JCR-2023],14.8[5-Year])
ISSN0002-7863
EISSN1520-5126
卷号145期号:48页码:26287-26295
发表状态已发表
DOI10.1021/jacs.3c09413
摘要

Surface reconstruction can rearrange the surface atoms of a crystal without the need of growth processes and has the potential to synthesize crystals with novel morphologies and facets that cannot be obtained through regular synthesis. However, little is known about the molecular mechanisms of the surface reconstruction process. Here, utilizing surface reconstruction, we report the synthesis of nonpolar facets (110) facets)-terminated dodecahedral zinc-blende CdSe/CdS core/shell quantum dots. The morphology transformation is achieved by first fully exchanging the cadmium carboxylate ligand with oleylamine and then undergoing surface reconstruction. The surface reconstruction-induced morphology transformation is confirmed by transmission electron microscopy and absorption spectroscopy. Details of kinetic experiments and simulation results demonstrated that successful surface reconstruction must be assisted by a proton shuttle. Except for the first report on zinc-blende quantum dots terminated with (110) facets, the surface reconstruction aided by the proton shuttle offers valuable insights for devising methods to regulate the properties of nanocrystals. © 2023 American Chemical Society.

关键词Absorption spectroscopy Cadmium compounds Carboxylation High resolution transmission electron microscopy II-VI semiconductors Morphology Semiconductor quantum dots Zinc Zinc sulfide CdSe/CdS (core-shell) quantum dots Growth process Molecular mechanism Morphology transformations Non-polar Novel morphologies Proton shuttle Surface atoms Surfaces reconstruction Zinc-blende CdSe
收录类别EI
语种英语
出版者American Chemical Society
EI入藏号20235015214771
EI主题词Nanocrystals
EI分类号546.3 Zinc and Alloys ; 712.1 Semiconducting Materials ; 714.2 Semiconductor Devices and Integrated Circuits ; 741.3 Optical Devices and Systems ; 761 Nanotechnology ; 802.2 Chemical Reactions ; 804.2 Inorganic Compounds ; 931.2 Physical Properties of Gases, Liquids and Solids ; 933.1 Crystalline Solids ; 951 Materials Science
原始文献类型Article in Press
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文献类型期刊论文
条目标识符https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/347903
专题物质科学与技术学院
物质科学与技术学院_硕士生
物质科学与技术学院_PI研究组_濮超丹组
通讯作者Pu, Chaodan
作者单位
School of Physical Science and Technology, ShanghaiTech University, Shanghai; 201210, China
第一作者单位物质科学与技术学院
通讯作者单位物质科学与技术学院
第一作者的第一单位物质科学与技术学院
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Zhou, Xiaolan,Pu, Chaodan. Proton Shuttle-Assisted Surface Reconstruction toward Nonpolar Facets-Terminated Zinc-Blende CdSe/CdS Core/Shell Quantum Dots[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,2023,145(48):26287-26295.
APA Zhou, Xiaolan,&Pu, Chaodan.(2023).Proton Shuttle-Assisted Surface Reconstruction toward Nonpolar Facets-Terminated Zinc-Blende CdSe/CdS Core/Shell Quantum Dots.JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,145(48),26287-26295.
MLA Zhou, Xiaolan,et al."Proton Shuttle-Assisted Surface Reconstruction toward Nonpolar Facets-Terminated Zinc-Blende CdSe/CdS Core/Shell Quantum Dots".JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 145.48(2023):26287-26295.
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