Abstract
Boron heterofullerenes were generated through arc-evaporation of doped graphite rods in a helium atmosphere. According to mass spectrometric analysis only mono-substituted fullerenes like C{sub 59}B, C{sub 69}B and higher homologues together with a large fraction of higher undoped fullerenes were extracted and enriched when pyridine was used as the solvent. XPS analysis of the extracts indicated the presence of two boron species with significantly different binding energies. One peak was assigned to borid acid. The second one corresponds to boron in the fullerene cage, which is mainly C{sub 59}B, according to the mass spectrum. This boron is in a somewhat higher oxidation state than that of ordinary boron-carbon compounds. The reported synthesis and extraction procedure opens a viable route for production of macroscopic amounts of these compounds. (author) 2 figs., 1 tab., 7 refs.
Schnyder, B;
Koetz, R;
[1]
Muhr, H J;
Nesper, R
[2]
- Paul Scherrer Inst. (PSI), Villigen (Switzerland)
- ETH Zurich, Zurich (Switzerland)
Citation Formats
Schnyder, B, Koetz, R, Muhr, H J, and Nesper, R.
XPS analysis of boron doped heterofullerenes.
Switzerland: N. p.,
1997.
Web.
Schnyder, B, Koetz, R, Muhr, H J, & Nesper, R.
XPS analysis of boron doped heterofullerenes.
Switzerland.
Schnyder, B, Koetz, R, Muhr, H J, and Nesper, R.
1997.
"XPS analysis of boron doped heterofullerenes."
Switzerland.
@misc{etde_492032,
title = {XPS analysis of boron doped heterofullerenes}
author = {Schnyder, B, Koetz, R, Muhr, H J, and Nesper, R}
abstractNote = {Boron heterofullerenes were generated through arc-evaporation of doped graphite rods in a helium atmosphere. According to mass spectrometric analysis only mono-substituted fullerenes like C{sub 59}B, C{sub 69}B and higher homologues together with a large fraction of higher undoped fullerenes were extracted and enriched when pyridine was used as the solvent. XPS analysis of the extracts indicated the presence of two boron species with significantly different binding energies. One peak was assigned to borid acid. The second one corresponds to boron in the fullerene cage, which is mainly C{sub 59}B, according to the mass spectrum. This boron is in a somewhat higher oxidation state than that of ordinary boron-carbon compounds. The reported synthesis and extraction procedure opens a viable route for production of macroscopic amounts of these compounds. (author) 2 figs., 1 tab., 7 refs.}
place = {Switzerland}
year = {1997}
month = {Jun}
}
title = {XPS analysis of boron doped heterofullerenes}
author = {Schnyder, B, Koetz, R, Muhr, H J, and Nesper, R}
abstractNote = {Boron heterofullerenes were generated through arc-evaporation of doped graphite rods in a helium atmosphere. According to mass spectrometric analysis only mono-substituted fullerenes like C{sub 59}B, C{sub 69}B and higher homologues together with a large fraction of higher undoped fullerenes were extracted and enriched when pyridine was used as the solvent. XPS analysis of the extracts indicated the presence of two boron species with significantly different binding energies. One peak was assigned to borid acid. The second one corresponds to boron in the fullerene cage, which is mainly C{sub 59}B, according to the mass spectrum. This boron is in a somewhat higher oxidation state than that of ordinary boron-carbon compounds. The reported synthesis and extraction procedure opens a viable route for production of macroscopic amounts of these compounds. (author) 2 figs., 1 tab., 7 refs.}
place = {Switzerland}
year = {1997}
month = {Jun}
}