Analysis of bis(trifluoromethylsulfonyl)imide-doped paramagnetic graphite intercalation compound using 19F very fast magic angle spinning nuclear magnetic resonance
Source abstract
Abstract
F atoms bonding to paramagnetic/conductive graphene layers in accepter-type graphite intercalation compounds (GICs) are analyzed using very fast magic angle spinning nuclear magnetic resonance, which is applied for the first time on F-19 nuclei to investigate paramagnetic materials. In the bis(trifluoromethylsulfonyl)imide(TFSI)-doped GIC, C-F bonds between fluorine atoms and graphene layers conform to a weak bonding of F to the graphene sheets. TFSI anions intercalated in the GIC do not show overall molecular motion; even at room temperature only the CF3 groups rotate.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced NMR Techniques and Applications · Graphene research and applications · Advancements in Battery Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (14)
Show source-provided references
1. Property control of carbon materials by fluorination10.1016/S0008-6223(99)00140-2 ↗
2. Graphite intercalation compounds with large fluoroanions10.1016/j.jfluchem.2006.10.004 ↗
3. Effect of reaction time on the composition of graphite bis(trifluoromethanesulfonyl)imide10.1016/j.carbon.2006.10.026 ↗
4. Chemical synthesis of graphite perfluorooctanesulfonate using K2MnF6 in hydrofluoric acid or mixed acid solutions10.1021/cm981060v ↗
5. Solid-state NMR study of the post-fluorination of (C2.5F)n fluorine-GIC10.1021/jp076170g ↗
6. Solid-state NMR (19F and 13C) study of graphite monofluoride (CF)n: 19F spin–lattice magnetic relaxation and 19F/13C distance determination by Hartmann–Hahn cross polarization10.1021/jp046833j ↗
7. Nuclear magnetic resonance study of fluorine–graphite intercalation compounds and graphite fluorides10.1016/S0379-6779(98)01512-4 ↗
8. Enhanced sensitivity and resolution in 1H solid-state NMR spectroscopy of paramagnetic complexes under very fast magic angle spinning10.1021/ja042188i ↗
9. 1H and 13C high-resolution solid-state NMR of paramagnetic compounds under very fast magic angle spinning10.1007/1-4020-3910-7_59 ↗
10. Electrochemical intercalation of lithium into a natural graphite anode in quaternary ammonium-based ionic liquid electrolytes10.1016/j.carbon.2005.07.038 ↗
11. OPENCORE NMR: open-source core modules for implementing an integrated FPGA-based NMR spectrometer10.1016/j.jmr.2008.02.019 ↗
12. Electron spin resonance of carbon nanotubes under hydrogen adsorption10.1103/PhysRevB.68.165418 ↗
13. An unusual weak bonding mode of fluorine to single-walled carbon nanotubes10.1016/j.carbon.2009.04.041 ↗
14. Relaxation effects in nuclear magnetic resonance absorption10.1103/PhysRev.73.679 ↗