Mechanistic insight into gold nanorod transformation in nanoscale confinement of ZIF-8

作     者：Cheongwon Bae Jaedeok Lee Lehan Yao Suhyeon Park Yeonju Lee Jieun Lee Qian Chen Juyeong Kim Cheongwon Bae;Jaedeok Lee;Lehan Yao;Suhyeon Park;Yeonju Lee;Jieun Lee;Qian Chen;Juyeong Kim

作者机构：Department of Chemistry and Research Institute of Natural SciencesGyeongsang National UniversityJinju 52828Republic of Korea Department of Materials Science and EngineeringUniversity of Illinois at Urbana-ChampaignUrbanaIL 61801USA Materials Research LaboratoryUniversity of Illinois at Urbana-ChampaignUrbanaIL 61801USA Beckman Institute for Advanced Science and TechnologyUniversity of Illinois at Urbana-ChampaignUrbanaIL 61801USA Department of ChemistryUniversity of Illinois at Urbana-ChampaignUrbanaIL 61801USA 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2021年第14卷第1期

页      面：66-73页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：the Korea Institute of Energy Technology Evaluation and Planning(No.20192050100060)from the Korea government Ministry of Trade,Industry,and Energy(MOTIE)and the Korea Basic Science Institute(KBSI)National Research Facilities&Equipment Center(NFEC)(No.2019R 1A 6C 1010042)from the Ministry of Education of Korea.In addition,this work was partially supported by the N ano.M aterial Technology D evelopm ent Program(No.2009-0082580) Basic Science Research Program(No.2020R1C1C1007568)through the National Research Foundation of Korea funded by the Ministry of Science,Information&Communication Technology(ICT),and Future Planning 

主　　题：nanoscale confinement core-shell structure gold nanorod metal-organic framework oxidative etching reductive regrowth 

摘      要：Core-shell hybrid nanomaterials have shown new properties and functions that are not attainable by their single *** confinement effect by porous inorganic shells in the hybrid nanostructures plays an important role for chemical transformation of the core ***,metal-organic frameworks(MOFs)have been rarely applied for understanding mechanical insight into such nanoscale phenomena in confinement,although MOFs would provide a variety of properties for the confining environment than other inorganic shells such as silica and ***,we examine chemical transformation of a gold nanorod core enclosed by a zeolitic imidazolate framework(ZIF)through chemical etching and regrowth,followed by quantitative analysis in the core dimension and *** find the nanorod core shows template-effective behavior in its morphological *** the etching event,the nanorod core is spherically carved from its *** regrowth on the spherically etched core inside the ZIF gives rise toformation of a raspberry-like branched nanostructure in contrast to the growth of an octahedral shape in bulk *** attribute the shell-directed regrowth to void space generated at the interfaces between the etched core and the ZIF shell,intercrystalline gaps in mult-domain ZIF shells,and local structural deformation from the acidic reaction conditions.