Non-clustering of sp3fluorine adatoms on pristine graphene surface

Shuilin Li; Yongjie Xu; Jiawei Liu; Ziying Li; Qian Feng; Yu Deng; Nujiang Tang

doi:10.1088/1361-648X/ac7023

Non-clustering of sp³fluorine adatoms on pristine graphene surface

J Phys Condens Matter. 2022 Jun 6;34(30). doi: 10.1088/1361-648X/ac7023.

Authors

Shuilin Li¹, Yongjie Xu¹, Jiawei Liu¹, Ziying Li¹, Qian Feng², Yu Deng¹, Nujiang Tang¹

Affiliations

¹ National Laboratory of Solid State Microstructures, Collaborative Innovation Center of Advanced Microstructures, and Jiangsu Provincial Key Laboratory for Nanotechnology, Nanjing University, Nanjing 210093, People's Republic of China.
² College of Physics and Energy, Fujian Normal University, Fujian Provincial Solar Energy Conversion and Energy Storage Engineering Technology Research Center, Fuzhou 350117, People's Republic of China.

PMID: 35576918
DOI: 10.1088/1361-648X/ac7023

Abstract

Fluorination can change graphene's properties, and which is theoretically relative to fluorination pattern ofsp³fluorine adatoms on graphene surface. The common view for the pattern is that it can easily form as a large cluster for the low migration barrier of fluorine adatoms on pristine graphene surface. Here, we report thatsp³fluorine adatoms are well-dispersed rather than clustered due to that the intensity ratio of 1.8 for C-CF/CF peaks (R) of fluorinated graphene is much higher thanR≈ 0 for clustered pattern. The low magnetic inducing efficiency of 1 µ_B/1000F adatoms indicates that the 'nonmagnetic' fluorine pairs rather than 'magnetic' fluorine 'points' dominate the well-dispersedsp³pattern. Our findings introduce a new insight into the fluorination structure properties of fluorinated and othersp³functionalized such as hydrogenated, chlorinated, or hydroxylated graphene and other carbon materials.

Keywords: clustering; fluorination; fluorination pattern; graphene; magnetic properties.