Son, Jangyup Ryu, Huije Kwon, Junyoung Huang, Siyuan Yu, Jaehyung Xu, Jingwei Watanabe, Kenji Taniguchi, Takashi Ji, Eunji Lee, Sol Shin, Yongjun Kim, Jong Hun Kim, Kwanpyo van der Zande, Arend M. Lee, Gwan-Hyoung 2024-01-19T15:34:25Z 2024-01-19T15:34:25Z 2021-09-02 2021-01 1530-6984 https://pubs.kist.re.kr/handle/201004/117604 While many technologies rely on multilayer heterostructures, most of the studies on chemical functionalization have been limited to monolayer graphene. In order to use functionalization in multilayer systems, we must first understand the interlayer interactions between functionalized and nonfunctionalized (intact) layers and how to selectively functionalize one layer at a time. Here, we demonstrate a method to fabricate single- or double-sided fluorinated bilayer graphene (FBG) by tailoring substrate interactions. Both the top and bottom surfaces of bilayer graphene on the rough silicon dioxide (SiO2) are fluorinated; meanwhile, only the top surface of graphene on hexagonal boron nitride (hBN) is fluorinated. The functionalization type affects electronic properties; double-sided FBG on SiO2 is insulating, whereas single-sided FBG on hBN maintains conducting, showing that the intact bottom layer becomes electrically decoupled from the fluorinated top insulating layer. Our results define a straightforward method to selectively functionalize the top and bottom surfaces of bilayer graphene. English American Chemical Society Tailoring Single- and Double-Sided Fluorination of Bilayer Graphene via Substrate Interactions Article 10.1021/acs.nanolett.0c03237 1 Nano Letters, v.21, no.2, pp.891 - 898 Nano Letters 21 2 891 898 N scie scopus 000614066800001 2-s2.0-85096040472 Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article Graphene chemical functionalization fluorination substrate interaction interlayer interactions