文献类型：期刊文献

英文题名：Electrically Driven Nonresonant Single Molecular Switches

作者：Wang, Rui;Tang, Ajun;Li, Zhi;Li, Yunpeng;Qu, Dahui[1];Li, Hongxiang[1]

机构：[1]East China Univ Sci & Technol, Feringa Nobel Prize Scientist Joint Res Ctr, Frontiers Sci Ctr Materiobiol & Dynam Chem, Inst Fine Chem,Sch Chem & Mol Engn,Key Lab Adv Mat, Shanghai 200237, Peoples R China; East China Univ Sci & Technol, Feringa Nobel Prize Scientist Joint Res Ctr, Frontiers Sci Ctr Materiobiol & Dynam Chem, Inst Fine Chem,Sch Chem & Mol Engn,Joint Int Res L, Shanghai 200237, Peoples R China

年份：2024

卷号：6

期号：2

起止页码：465

外文期刊名：CCS CHEMISTRY

收录：WOS:【ESCI(收录号:WOS:001024337200001)】；

基金：This work was supported by the National Natural Science Foundation of China (grant nos. 21875279, 22075080, and 52273176) , the Shanghai Municipal Science and Technology Major Project (grant no. 2018SHZDZX03) , the Fundamental Research Funds for the CentralUniversities, and East China University of Science and Technology.

语种：英文

外文关键词：lecular switch; bias voltage; nonresonant charge; transport; molecular electronics

摘要：Electrical switching of a single-molecule junction provides a practical module to perform sophisticated operations in electronic devices. However, designing an all-electrically-driven molecular switch is a great challenge. Here, we experimentally and theoretically investigated the charge transport characteristics of isoindigo (ISO)-molecules at the single-molecule level using the scanning tunneling microscope break junction technique. We find that the single-molecule junctions of ISO-molecules display bias voltage -driven switching characteristics. These switches are realtime, reversible, and nondestructive under low-bias voltages. Experimental results show that the mechanism of the switch is not the transition from nonresonant charge transport to resonant charge transport, but it is the shift of the frontier orbital energy levels of ISO-molecules and the change of the interfacial electronic coupling with bias voltage. Our results will advance the design of high-performance bias voltage-driven molecular switches.