Highly Conductive Graphene Nanoribbons by Longitudinal Splitting of Carbon Nanotubes Using Potassium Vapor

被引：194

作者：

Kosynkin, Dmitry V.

Lu, Wei

Sinitskii, Alexander

Pera, Gorka

Sun, Zhengzong

Tour, James M. ^{[1
]}

机构：

[1] Rice Univ, Richard E Smalley Inst Nanoscale Sci & Technol, Dept Chem, Houston, TX 77005 USA

来源：

ACS NANO | 2011年 / 5卷 / 02期

关键词：

graphene nanoribbons; potassium; chlorosulfonic acid; exfoliation; RAMAN-SPECTRA; INTERCALATION; GRAPHITE; LITHIUM; FORM;

D O I：

10.1021/nn102326c

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Here we demonstrate that graphene nanoribbons (GNRs) free of oxidized surfaces can be prepared in large batches and 100% yield by splitting multiwalled carbon nanotubes (MWCNTs) with potassium vapor. If desired, exfoliation is attainable in a subsequent step using chlorosulfonic acid. The low-defect density of these GNRs Is indicated by their electrical conductivity, comparable to that of graphene derived from mechanically exfoliated graphite. The possible origins of directionally selective splitting of MWCNTs have been explored using computer modeling, and plausible explanations for the unique role of potassium were found.

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页码：968 / 974

页数：7

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