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The Change of the State of an Endohedral Fullerene by Encapsulation into SWCNT: A Raman Spectroelectrochemical Study of Dy 3 N@C 80 Peapods
Author(s) -
Kalbáč Martin,
Kavan Ladislav,
Zukalová Markéta,
Yang Shangfeng,
Čech Jiří,
Roth Siegmar,
Dunsch Lothar
Publication year - 2007
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.200700089
Subject(s) - raman spectroscopy , fullerene , materials science , carbon nanotube , endohedral fullerene , doping , electrochemistry , nanotechnology , moiety , analytical chemistry (journal) , electrode , chemistry , optoelectronics , stereochemistry , organic chemistry , optics , physics
Raman and in situ Raman spectroelectrochemical studies of Dy 3 N@C 80 @SWCNT peapods have been carried out for the first time. The formation of peapods by the encapsulation of gaseous Dy 3 N@C 80 has been confirmed by HR‐TEM microscopy and by the successful transformation of Dy 3 N@C 80 @SWCNT into double‐walled carbon nanotubes. The Raman spectra of the endohedral fullerene cluster changed dramatically in the interior of the single‐walled carbon nanotube (SWCNT). The electrochemical charging of the peapod indicates a slight reversible attenuation of the Raman intensities of fullerene features during anodic doping. The results support the assignment of Raman bands to the Dy 3 N@C 80 moiety inside a SWCNT.