Customizable Ligand Exchange for Tailored Surface Property of Noble Metal Nanocrystals

作     者：Qikui Fan Hao Yang Juan Ge Shumeng Zhang Zhaojun Liu Bo Lei Tao Cheng Youyong Li Yadong Yin Chuanbo Gao 

作者机构：Frontier Institute of Science and TechnologyState Key Laboratory of Multiphase Flow in Power EngineeringXi’an Jiaotong UniversityXi’anShaanxi 710054China Institute of Functional Nano&Soft Materials(FUNSOM)Jiangsu Key Laboratory for Carbon-Based Functional Materials&DevicesJoint International Research Laboratory of Carbon-Based Functional Materials and DevicesSoochow UniversitySuzhouJiangsu 215123China Department of ChemistryUniversity of CaliforniaRiversideCalifornia 92521USA 

出 版 物：《Research》 (研究（英文）)

年 卷 期：2020年第2020卷第1期

页      面：292-303页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：C.G.acknowledges the support from the National Natural Science Foundation of China(21671156) the Fundamental Research Funds for the Central Universities the World-Class Universities(Disciplines)and the Characteristic Development Guidance Funds for the Central Universities,and the Tang Scholar Program from Cyrus Tang Foundation T.C.acknowledges the support from the Collaborative Innovation Center of Suzhou Nano Science and Technology,the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD) the 111 Project Y.Y.acknowledges the support from the U.S.National Science Foundation(CHE-1308587) 

主　　题：properties replace mutual 

摘      要：It is highly desirable,while still challenging,to obtain noble metal nanocrystals with custom capping ligands,because their colloidal synthesis relies on specific capping ligands for the shape control while conventional ligand exchange processes suffer from“the strong replaces the weaklimitation,which greatly hinders their ***,we report a general and effective ligand exchange approach that can replace the native capping ligands of noble metal nanocrystals with virtually any type of ligands,producing flexibly tailored surface *** key is to use diethylamine with conveniently switchable binding affinity to the metal surface as an intermediate *** a strong ligand,it in its original form can effectively remove the native ligands;while protonated,it loses its binding affinity and facilitates the adsorption of new ligands,especially weak ones,onto the metal *** this means,the irreversible order in the conventional ligand exchange processes could be *** efficacy of the strategy is demonstrated by mutual exchange of the capping ligands among cetyltrimethylammonium,citrate,polyvinylpyrrolidone,and *** novel strategy significantly expands our ability to manipulate the surface property of noble metal nanocrystals and extends their applicability to a wide range of fields,particularly biomedical applications.