文献类型：期刊文献

英文题名：Covalently bonded single-molecule junctions with stable and reversible photoswitched conductivity

作者：Jia, Chuancheng[1];Migliore, Agostino[2];Xin, Na[1];Huang, Shaoyun[3,4];Wang, Jinying[1];Yang, Qi[3,4];Wang, Shuopei[5];Chen, Hongliang[1];Wang, Duoming[5];Feng, Boyong[3,4];Liu, Zhirong[1];Zhang, Guangyu[5];Qu, Da-Hui[6,7];Tian, He[6,7];Ratner, Mark A.[8];Xu, H. Q.[3,4];Nitzan, Abraham[9,10];Guo, Xuefeng[1,11]

机构：[1]Peking Univ, State Key Lab Struct Chem Unstable & Stable Speci, Beijing Natl Lab Mol Sci, Coll Chem & Mol Engn, Beijing 100871, Peoples R China;[2]Duke Univ, Dept Chem, Durham, NC 27708 USA;[3]Peking Univ, Dept Elect, Beijing 100871, Peoples R China;[4]Peking Univ, Key Lab Phys & Chem Nanodevices, Beijing 100871, Peoples R China;[5]Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China;[6]E China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[7]E China Univ Sci & Technol, Inst Fine Chem, Shanghai 200237, Peoples R China;[8]Northwestern Univ, Dept Chem, 2145 Sheridan Rd, Evanston, IL 60208 USA;[9]Univ Penn, Dept Chem, Philadelphia, PA 19104 USA;[10]Tel Aviv Univ, Sch Chem, IL-69978 Tel Aviv, Israel;[11]Peking Univ, Dept Mat Sci & Engn, Coll Engn, Beijing 100871, Peoples R China

年份：2016

卷号：352

期号：6292

起止页码：1443

外文期刊名：SCIENCE

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000377975400044)】；

基金：We acknowledge Z. Liu, N. Kang, J. Bergfield, and C. Van Dyck for insightful discussions. This work was supported by the National Basic Research Program of China (2012CB921404 and 2012CB932703) (K.G. and H.Q.X.), the National Natural Science Foundation of China (21225311, 91333102, 21373014, 21190033, 91221202, and 61321001) (X.G., D.-H.Q., and H.Q.X.), the Israel Science Foundation (A.N. and A.M.), the U.S.-Israel Bi-national Science Foundation (A.N.), and the University of Pennsylvania (A.N.).

语种：英文

摘要：Through molecular engineering, single diarylethenes were covalently sandwiched between graphene electrodes to form stable molecular conduction junctions. Our experimental and theoretical studies of these junctions consistently show and interpret reversible conductance photoswitching at room temperature and stochastic switching between different conductive states at low temperature at a single-molecule level. We demonstrate a fully reversible, two-mode, single-molecule electrical switch with unprecedented levels of accuracy (on/off ratio of similar to 100), stability (over a year), and reproducibility (46 devices with more than 100 cycles for photoswitching and similar to 10(5) to 10(6) cycles for stochastic switching).