title: Metal-semiconductor transition like behavior of naphthalene-doped single wall carbon nanotube bundles.
abstract: Naphthalene (N) or naphthalene-derivative (ND) adsorption-treatment evidently varies the electrical conductivity of single wall carbon nanotube (SWCNT) bundles over a wide temperature range due to a charge-transfer interaction. The adsorption treatment of SWCNTs with dinitronaphthalene molecules enhances the electrical conductivity of the SWCNT bundles by 50 times. The temperature dependence of the electrical conductivity of N- or ND-adsorbed SWCNT bundles having a superlattice structure suggests metal-semiconductor transition like behavior near 260 K. The ND-adsorbed SWCNT gives a maximum in the logarithm of electrical conductivity vs. T(-1) plot, which may occur after the change to a metallic state and be associated with a partial unravelling of the SWCNT bundle due to an evoked librational motion of the moieties of ND with elevation of the temperature.
authors.affiliation: Department of Chemistry, Indonesia University of Education, Bandung 40154, Indonesia. fitri.khoerunnisa@gmail.com.
authors.forename: Fitri
authors.initials: F
authors.lastname: Khoerunnisa
authors.forename: Aaron
authors.initials: A
authors.lastname: Morelos-Gomez
authors.forename: Hideki
authors.initials: H
authors.lastname: Tanaka
authors.forename: Toshihiko
authors.initials: T
authors.lastname: Fujimori
authors.forename: Daiki
authors.initials: D
authors.lastname: Minami
authors.forename: Radovan
authors.initials: R
authors.lastname: Kukobat
authors.forename: Takuya
authors.initials: T
authors.lastname: Hayashi
authors.forename: Sang Young
authors.initials: SY
authors.lastname: Hong
authors.forename: Young Chul
authors.initials: YC
authors.lastname: Choi
authors.forename: Minoru
authors.initials: M
authors.lastname: Miyahara
authors.forename: Mauricio
authors.initials: M
authors.lastname: Terrones
authors.forename: Morinobu
authors.initials: M
authors.lastname: Endo
authors.forename: Katsumi
authors.initials: K
authors.lastname: Kaneko