Graphene nanochains and nanoislands in the layers of room-temperature fluorinated graphite |
| |
| Affiliation: | 1. Nikolaev Institute of Inorganic Chemistry SB RAS, 3 Academician Lavrentiev Avenue, Novosibirsk 630090, Russian Federation;2. Clermont Université, Université Blaise Pascal, Institut de Chimie de Clermont-Ferrand, BP 10448, F-63000 Clermont-Ferrand, France;3. CNRS, UMR 6296, ICCF, BP 80026, F-63171 Aubière, France;4. Department of Physics, Umeå University, 90187 Umeå, Sweden;1. Nikolaev Institute of Inorganic Chemistry, SB RAS, 3 Acad. Lavrentiev Ave., 630090 Novosibirsk, Russia;2. Novosibirsk State University, 2 Pirogov Str., 630090 Novosibirsk, Russia;3. Dipartimento di Fisica e Scienze della Terra, Universita di Parma, Via G.P. Usberti 7/A, 43124 Parma, Italy;1. Center for Multidimensional Carbon Materials (CMCM), Institute for Basic Science (IBS), Ulsan 44919, Republic of Korea;2. Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea;3. School of Materials Science and Engineering, UNIST, Ulsan 44919, Republic of Korea;4. Department of Energy Engineering, UNIST, Ulsan 44919, Republic of Korea;1. College of Polymer Science and Engineering, State Key Laboratory of Polymer Material and Engineering, Sichuan University, Chengdu, 610065, PR China;2. State Key Lab of Fluorinated Functional Membrane Materials, Dongyue Polymer Material Company of Dongyue Federation, Zibo, Shandong, 256401, PR China;1. Department of Materials Science and Engineering, University of Texas at Dallas, Richardson, TX 75080, United States;2. Department of Chemistry and Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, TX 75080, United States;3. Department of Chemistry, University of Science and Technology, Pohang, Gyeongbuk 790-784, Republic of Korea;1. The Key Laboratory of Life-Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, Department of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, PR China;2. State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China |
| |
| Abstract: | Intercalated compound of graphite fluoride with n-heptane has been synthesized at room temperature using a multi-stage process including fluorination by a gaseous BrF3 and a set of intercalant exchange reactions. It was found that composition of the compound is CF0.40(C7H16)0.04 and the guest molecules interact with the graphite fluoride layers through the van der Waals forces. Since the distance between the filled layers is 1.04 nm and the unfilled layers are separated by ～0.60 nm, the obtained compound can be considered as a stack of the fluorinated graphenes. These fluorinated graphenes are large in area making it possible to study local destruction of the π conjugated system on the basal plane. It was shown that fluorine atoms form short chains, while non-fluorinated sp2 carbon atoms are organized in very narrow ribbons and aromatic areas with a size smaller than 3 nm. These π electron nanochains and nanoislands preserved after the fluorination process are likely responsible for the value of the energy gap of the compound of ～2.5 eV. Variation in the size and the shape of π electron regions within the fluorinated graphene layers could be a way for tuning the electronic and optical characteristics of the graphene-based materials. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
