title: Characterization of Conformation and Locations of C-F Bonds in Graphene Derivative by Polarized ATR-FTIR.
abstract: It is still a challenge to explore the orientation and location of chemical groups in the two-dimensional derivative of graphene. In this study, polarized attenuated total reflectance Fourier transform infrared spectroscopy (polarized ATR-FTIR) was employed to investigate the orientation and location of C-F groups in the corresponding graphene derivative sheets, which facilitates building a relationship between the bonding nature and fine structure. There were two types of C-F bonding, (C-F)I and (C-F)II, in fluorinated graphene sheets. It was found that (C-F)II bonds were linked at the coplanar carbon atoms in the weakly fluorinated region (CxF, x ≥ 2), whereas the (C-F)I bonds cluster at the strongly deformed carbon framework with a F/C ratio of about 1. The thermostability of (C-F)II is lower than that of (C-F)I bonds. This is because the coplanar structure of the weakly fluorinated region tends to transform to the planar aromatic ring with the breaking of the C-F bond as compared with the strong fluorinated nonplanar region.
authors.affiliation: State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University , Chengdu, Sichuan 610065, P.R. China.|Department of Chemical Engineering, University of New Brunswick , Fredericton, New Brunswick E3B 5A3, Canada.
authors.forename: Xu
authors.initials: X
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University , Chengdu, Sichuan 610065, P.R. China.
authors.forename: Weimiao
authors.initials: W
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University , Chengdu, Sichuan 610065, P.R. China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Liu
authors.affiliation: State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University , Chengdu, Sichuan 610065, P.R. China.
authors.forename: Mengmeng
authors.initials: M
authors.lastname: Ren
authors.affiliation: Department of Chemical Engineering, University of New Brunswick , Fredericton, New Brunswick E3B 5A3, Canada.
authors.forename: Huining
authors.initials: H
authors.lastname: Xiao
authors.affiliation: State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University , Chengdu, Sichuan 610065, P.R. China.
authors.forename: Xiangyang
authors.initials: X
authors.lastname: Liu