Atomically precise metal-chalcogenide semiconductor molecular nanoclusters with high dispersibility:Designed synthesis and intracluster photocarrier dynamics

作     者：Jiaxu Zhang Chaochao Qin Yeshuang Zhong Xiang Wang Wei Wang Dandan Hu Xiaoshuang Liu Chaozhuang Xue Rui Zhou Lei Shen Yinglin Song Dingguo Xu Zhien Lin Jun Guo Haifeng Su Dong-Sheng Li Tao Wu Jiaxu Zhang;Chaochao Qin;Yeshuang Zhong;Xiang Wang;Wei Wang;Dandan Hu;Xiaoshuang Liu;Chaozhuang Xue;Rui Zhou;Lei Shen;Yinglin Song;Dingguo Xu;Zhien Lin;Jun Guo;Haifeng Su;Dong-Sheng Li;Tao Wu

作者机构：College of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123China Henan Key Laboratory of Infrared Materials&Spectrum Measures and ApplicationsSchool of PhysicsHenan Normal UniversitXinxiang 453007China College of ChemistrySichuan UnivrsityChengdu 610064China School of Physical Science and TechnologySoochow UniversitySuzhou 215123China Testing&Analysis CentreSoochow UniversitySuzhou 215123China College of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China College of Materials and Chemical Engineering Hubei Provincial Collaborative Innovation Centre for New Energy MicrogridKey Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion MaterialsChina Three Gorges UniversityYichang 443002China 

基　　金：The authors acknowledge financial support from the National Natural Science Foundation of China(Nos.21671142,11804084 and 21875150) the Jiangsu Province Natural Science Fund for Distinguished Young Scholars(No.BK20160006) the 111 Project(No.D20015) the Project of Scientific and Technologic Infrastructure of Suzhou(No.SZS201905) the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD).The authors also thank Dr.D.C.Ma at Analytical and Testing Center,Sichuan University for technical help with the Material Studio calculations 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2020年第13卷第10期

页      码：2828-2836页

摘      要：A comprehensive understanding of excited-state dynamics of semiconductor quantum dots or nanomaterials at the atomic or molecular level is of scientific *** inorganic(or non-covalently protected)seimiconductor molecular nanoclusters with atomically precise structure are contributive to establish accurate correlation of excited-state dynamics with their composition/structure,however,the related studies are almost blank because of unresolved solvent dispersion ***,we designedly created the largest discrete chalcogenide seimiconductor molecular nanoclusters(denoted P2-CuMSnS,M=In or/and Ga)with great dispersibility,and revealed an interesting intracluster“core–shell”charge transfer relaxation dynamics.A systematic red shift in absorption spectra with the gradual substitution of In by Ga was experimentally and computationally investigated,and femtosecond transient absorption measurements further manifested there were three ultrafast processes in excited-state dynamics of P2 nanoclusters with the corresponding amplitudes directed by composition *** results hold the great promise of the solution-processible applications of semiconductor-NC-based quantum dots and facilitate the development of atomically precise nano-chemistry.

主 题 词：semiconductor nanoclusters photocarrier dynamics charge transfer atomically precise 

学科分类：081704[081704] 07[理学] 070304[070304] 08[工学] 0817[工学-轻工类] 0703[理学-化学类] 

核心收录：

D　O　I：10.1007/s12274-020-2936-0

馆 藏 号：203979397...