Direct Observation of Electron-Vibration Coupling at MXene-Solvent Interface

作     者：Yan-jun Xu He-yuan Liu Hai-long Chen 胥艳军;刘鹤元;陈海龙

作者机构：The Laboratory of Soft Matter PhysicsBeijing National Laboratory for Condensed Matter PhysicsInstitute of PhysicsChinese Academy of SciencesBeijing 100190China School of Physical ScienceUniversity of Chinese Academy of SciencesBeijing 100049China Songshan Lake Materials LaboratoryDongguan 523808China 

出 版 物：《Chinese Journal of Chemical Physics》 (化学物理学报（英文）)

年 卷 期：2021年第34卷第5期

页      面：605-612,I0003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：supported by the National Key Research and Development Program of China(No.2018YFA0208700) the National Natural Science Foundation of China (No.21773302) the Strategic Priority Research Program of Chinese Academy of Sciences (No.XDB30000000) 

主　　题：MXene Ultrafast spectroscopy Photothermal conversion Electron-vibration coupling 

摘      要：MXenes,a new family of two-dimensional(2D)materials,have received extensive interest due to their fascinating physicochemical properties,such as outstandinglight-to-heat conversion ***,the photothermal conversion mechanism of MXenes is still poorly ***,by using femtosecond visible and mid-infrared transient absorption spectroscopy,the electronic energy dissipation dynamics of MXene(Ti_(3)C_(2)T_(x))nanosheets dispersed in various solvents are carefully *** results indicate that the lifetime of photoexcited MXene is strongly dependent on the surrounding ***,the interfacial electron-vibration coupling between the MXene nanosheets and the adjacent solvent molecules is directly observed following the ultrafast photoexcitation of *** suggests that the interfacial interactions at the MXene-solvent interface play a critical role in the ultrafast energy transport dynamics of MXene,which offers a potentially feasible route for tailoring the light conversion properties of 2D systems.