title: Photo-switchable molecular monolayer anchored between highly transparent and flexible graphene electrodes.
abstract: A molecular ultra-thin film (for example, a molecular monolayer) with graphene electrodes would allow for the realization of superior stable, transparent and flexible electronics. A realistic prospect regarding the use of graphene in two-terminal molecular electronic devices is to fabricate a chemically stable, optically transparent, mechanically flexible and molecularly compatible junction. Here we report on a novel photo-switchable molecular monolayer, one side chemically and the other side physically anchored between the two graphene electrodes. The photo-switchable organic molecules specified with an electrophilic group are chemically self-assembled into a monolayer on the graphene bottom electrode, while the other end is physically contacted to the graphene top electrode; this arrangement provides excellent stability for a highly transparent and flexible molecular monolayer device with a high device yield due to soft contacts at the top electrode interface. Thus, the transparent graphene electrodes allow stable molecular photo-switching due to photo-induced changes in the molecular conformational length.
authors.affiliation: National Creative Research Initiative, Department of Chemistry, Center for Smart Molecular Memory, Sungkyunkwan University, 300 Cheoncheon-Dong, Jangan-Gu, Suwon, Gyeonggi-Do 440-746, Republic of Korea.
authors.forename: Sohyeon
authors.initials: S
authors.lastname: Seo
authors.forename: Misook
authors.initials: M
authors.lastname: Min
authors.forename: Sae Mi
authors.initials: SM
authors.lastname: Lee
authors.forename: Hyoyoung
authors.initials: H
authors.lastname: Lee