Abstract
In this study, the structures of two Se chains confined inside single-walled carbon nanotubes (SWCNTs), which were denoted as Se@SWCNT, were investigated by extended X-ray absorption fine structure analysis and transmission electron microscopy. The Se chains were linear and parallel to each other in the SWCNTs. The covalent bond length of Se@SWCNT was shorter than that of trigonal Se (t-Se), whereas the force constant was larger, thereby suggesting that the covalent bond was stronger for Se@SWCNT than that for t-Se. The interchain interaction originated from the overlap of lone-pair and antibonding orbitals on adjacent chains, so the disappearance of the overlap in the encapsulated Se chains strengthened the covalent bonds.
Original language | English |
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Article number | 111737 |
Journal | Journal of Physics and Chemistry of Solids |
Volume | 185 |
DOIs | |
State | Published - 2024/02 |
Keywords
- EXAFS
- Selenium
- Single-walled carbon nanotube
ASJC Scopus subject areas
- General Chemistry
- General Materials Science
- Condensed Matter Physics