Effect of nanoscale curvature of single-walled carbon nanotubes on adsorption of polycyclic aromatic hydrocarbons

被引：255

作者：

Gotovac, Suzana

Honda, Hiroaki

Hattori, Yoshiyuki

Takahashi, Kunimitsu

Kanoh, Hirofumi

Kaneko, Katsumi ^{[1
]}

机构：

[1] Chiba Univ, Grad Sch Sci & Technol, Chiba 2638522, Japan

[2] Laser Inst Ctr, Inst Res & Innovat, Kashiwa, Chiba 2770861, Japan

来源：

NANO LETTERS | 2007年 / 7卷 / 03期

关键词：

D O I：

10.1021/nl0622597

中图分类号：

O6 [化学];

学科分类号：

0703 [化学];

摘要：

Liquid-phase adsorption of tetracene and phenanthrene on a single-walled carbon nanotube (SWCNT) was examined. Tetracene adsorption was more than six times greater than that of phenanthrene. X-ray photoelectron spectroscopic examination clearly showed that tetracene and phenanthrene molecules efficiently coated the SWCNT external surfaces. The remarkable difference between the adsorption amounts of tetracene and phenanthrene was caused by the nanoscale curvature effect of the tube surface, resulting in a difference in the amount of contact between the molecule and the tube surface. The adsorption of tetracene and phenanthrene caused a significant higher frequency shift in the radial breathing mode (RBM) of the Raman band of the SWCNT, indicating an intensive pi-pi interaction between these polycyclic aromatic hydrocarbons and the external SWCNT surface.

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收藏

页码：583 / 587

页数：5

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