Premium
Investigation of hydrogenated HiPCo nanotubes by infrared spectroscopy
Author(s) -
Németh Katalin,
Pekker Áron,
Borondics Ferenc,
Jakab Emma,
Nemes Norbert M.,
Kamarás Katalin,
Pekker Sándor
Publication year - 2010
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201000329
Subject(s) - carbon nanotube , materials science , nanotube , selectivity , infrared spectroscopy , infrared , spectroscopy , doping , nanotechnology , chemical engineering , organic chemistry , chemistry , catalysis , optoelectronics , optics , physics , engineering , quantum mechanics
Two different reductive synthetic methods were applied to hydrogenate the sidewalls of HiPCo single‐walled carbon nanotubes (SWNTs). In the first one, the reductive agent was melted potassium which doped and exfoliated the nanotube bundles, so that before hydrogenation all of the tubes had been converted to metallic ones. In the second method, doping occurred just before hydrogenation by naphthalenide radical anions. The products were characterized by wide range infrared (30–52 000 cm −1 ) spectroscopy with special emphasis on the selectivity of the two methods. We found that in the first case the controlling factor is the bandgap, and in the second case the diameter. This difference suggests the importance of the π–π interaction between naphthalenide and the nanotube surface.