Covalently bonded single-molecule junctions with stable and reversible photoswitched conductivity

Chuancheng Jia, Agostino Migliore, Na Xin, Shaoyun Huang, Jinying Wang, Qi Yang, Shuopei Wang, Hongliang Chen, Duoming Wang, Boyong Feng, Zhirong Liu, Guangyu Zhang, Da Hui Qu, He Tian, Mark A. Ratner, H. Q. Xu*, Abraham Nitzan, Xuefeng Guo

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


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 ∼100), stability (over a year), and reproducibility (46 devices with more than 100 cycles for photoswitching and ∼105 to 106 cycles for stochastic switching).

Original languageEnglish
Pages (from-to)1443-1445
Number of pages3
Issue number6292
StatePublished - 17 Jun 2016


FundersFunder number
U.S.-Israel Bi-national Science Foundation
University of Pennsylvania
National Natural Science Foundation of China21373014, 21190033, 61321001, 91221202, 21225311, 91333102
Israel Science Foundation
National Basic Research Program of China (973 Program)2012CB932703, 2012CB921404


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