Diminished band-gap transitions of single-walled carbon nanotubes in complexation with aromatic molecules

被引：91

作者：

Fernando, KAS ^{[1
]}

Lin, Y ^{[1
]}

Wang, W ^{[1
]}

Kumar, S ^{[1
]}

Zhou, B ^{[1
]}

Xie, SY ^{[1
]}

Cureton, LT ^{[1
]}

Sun, YP ^{[1
]}

机构：

[1] Clemson Univ, Howard L Hunter Chem Lab, Dept Chem, Clemson, SC 29634 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2004年 / 126卷 / 33期

关键词：

D O I：

10.1021/ja047691+

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The near-IR absorption spectrum of semiconducting single-walled carbon nanotubes is characterized by the transitions associated with the first (S11) and second (S22) pairs of van Hove singularities in the electronic density of states. We report that a significant effect on the transitions can be caused by non-covalent complexation of the nanotube with planar aromatic molecules such as pyrenes in solution, resulting in the absence of S11 and S22 bands in the near-IR absorption spectrum. Since the complexation is reversible, the characteristic absorption bands can be turned on and off with the complexation in a reversible fashion. Copyright © 2004 American Chemical Society.

引用

页码：10234 / 10235

页数：2

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