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Ruoff, Rodney S.
Center for Multidimensional Carbon Materials (CMCM)
Research Interests
  • Next generation carbons, ultrathin sp3-bonded carbon sheets, negative curvature (‘Schwartzites’) carbons, sp3/sp2 hybrid carbon materials, model compounds for novel carbon materials, reaction mechanisms

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Stage-1 cationic C-60 intercalated graphene oxide films

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Title
Stage-1 cationic C-60 intercalated graphene oxide films
Author
Chen, XianjueChing, KarinRawal, AdityaLawes, Douglas J.Tajik, MohammadDonald, William A.Zhao, ChuanLee, Sun HwaRuoff, Rodney S.
Issue Date
2021-04
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
CARBON, v.175, pp.131 - 140
Abstract
A "stage-1" intercalated film has been made by the ion exchange of pyrrolidinium-functionalized C-60 (C-60(Py)(n+)) into centimeter-wide, micrometer-thick air-dried graphene oxide (G-O) films composed of tens of thousands of layers of stacked/overlapping G-O platelets, denoted [C-60(Py)(n+)]G-O films. Spontaneous intercalation by ion exchange of one layer of C-60(Py)(n+) between adjacent G-O layers expands the interlayer spacing of the films from 0.74 nm to 1.46 nm. The films remain intact in water and various organic solvents, which is likely due to a strong affinity between C-60(Py)(n+) and G-O. Membranes made of the films showed a 6.8 times faster water vapor permeation rate (allowing the vapor to transport through the membrane almost freely) and a 10.5 times faster liquid water permeation rate than G-O membranes. Heating the films at 2000 degrees C under applied pressure or at 2700 degrees C without physical confinement converted them into highly graphitized structures. (C) 2020 Elsevier Ltd. All rights reserved.
URI
https://scholarworks.unist.ac.kr/handle/201301/55388
URL
https://www.sciencedirect.com/science/article/pii/S0008622320312598?via%3Dihub
DOI
10.1016/j.carbon.2020.12.082
ISSN
0008-6223
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CHM_Journal Papers
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