Metal-semiconductor transition like behavior of naphthalene-doped single wall carbon nanotube bundles

Fitri Khoerunnisa, Aaron Morelos-Gomez, Hideki Tanaka, Toshihiko Fujimori, Daiki Minami, Radovan Kukobat, Takuya Hayashi, Sang Young Hong, Young Chul Choi, Minoru Miyahara, Mauricio Terrones, Morinobu Endo, Katsumi Kaneko

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)145-156
Number of pages12
JournalFaraday Discussions
StatePublished - Dec 1 2014

All Science Journal Classification (ASJC) codes

  • General Medicine


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