文献类型：期刊文献

中文题名：Electrically Driven Nonresonant Single Molecular Switches

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

机构：[1]Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering,Feringa Nobel Prize Scientist Joint Research Center,Frontiers Science Center for Materiobiology and Dynamic Chemistry,Institute of Fine Chemicals,School of Chemistry and Molecular Engineering,East China University of Science and Technology,Shanghai 200237

年份：2024

卷号：6

期号：2

起止页码：465

中文期刊名：CCS Chemistry

外文期刊名：中国化学会会刊（英文）

收录：Scopus;CSCD:【CSCD2023_2024】；PubMed;

基金：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 Central Universities,and East China University of Science and Technology.

语种：英文

中文关键词：single-molecule junction;isoindigo;molecular 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.