TY - JOUR
T1 - STM study of molecular adsorption on single-wall carbon nanotube surface
AU - Ago, Hiroki
AU - Azumi, Reiko
AU - Ohshima, Satoshi
AU - Zhang, Yingjiu
AU - Kataura, Hiromichi
AU - Yumura, Motoo
N1 - Funding Information:
This work is supported by the Nano-Carbon Technology (NCT) project of METI and CREST of Japan Science and Technology Cooperation.
PY - 2004/1/15
Y1 - 2004/1/15
N2 - Physisorption of linear-chain alkane and fatty acid molecules on the outer surface of single-wall carbon nanotubes (SWNTs) has been studied by scanning tunneling microscopy (STM) measurements. These molecules are known to organize and form a self-assembled monolayer on a basal plane of graphite, showing a lamellar pattern. We have found that stearic acid molecules (C 17H35COOH) also show a lamellar pattern on the SWNT surface. This suggests that stearic acid forms a self-assembled monolayer and modulates the surface charge density of SWNT. Formation of the self-assembled monolayer has been observed on the SWNTs surface less frequently than on the graphite surface. This can be explained in terms of an inhomogeneous chirality distribution of the SWNTs and weak van der Waals interaction between the molecules and SWNTs.
AB - Physisorption of linear-chain alkane and fatty acid molecules on the outer surface of single-wall carbon nanotubes (SWNTs) has been studied by scanning tunneling microscopy (STM) measurements. These molecules are known to organize and form a self-assembled monolayer on a basal plane of graphite, showing a lamellar pattern. We have found that stearic acid molecules (C 17H35COOH) also show a lamellar pattern on the SWNT surface. This suggests that stearic acid forms a self-assembled monolayer and modulates the surface charge density of SWNT. Formation of the self-assembled monolayer has been observed on the SWNTs surface less frequently than on the graphite surface. This can be explained in terms of an inhomogeneous chirality distribution of the SWNTs and weak van der Waals interaction between the molecules and SWNTs.
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U2 - 10.1016/j.cplett.2003.11.053
DO - 10.1016/j.cplett.2003.11.053
M3 - Article
AN - SCOPUS:0347753698
SN - 0009-2614
VL - 383
SP - 469
EP - 474
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 5-6
ER -