STM 诱导功能化多壁碳纳米管的解压缩。

Unzipping of functionalized multiwall carbon nanotubes induced by STM.

机构信息

Institute for Polymers and Composites/I3N, Department of Polymer Engineering, University of Minho, Guimarães, Portugal.

出版信息

Nano Lett. 2010 May 12;10(5):1764-8. doi: 10.1021/nl100240n.

PMID:20402490

Abstract

Carbon nanotubes (CNTs), functionalized by a cycloaddition reaction, were studied by ultrahigh vacuum scanning tunneling microscopy (STM). The STM images provided evidence for partial or total unzipping of the outer CNT layer. The formation of graphene ribbons was triggered by the STM tip, under specific operating conditions. A model for the unzipping is proposed, based on the perturbation of the pi-conjugation along the CNT surface induced by the cycloaddition reaction.

摘要

采用环加成反应功能化的碳纳米管（CNTs）通过超高真空扫描隧道显微镜（STM）进行了研究。STM 图像为外 CNT 层的部分或完全解拉链提供了证据。在特定的操作条件下，STM 针尖触发了石墨烯带的形成。提出了一种基于环加成反应沿 CNT 表面诱导的π共轭扰动的解拉链模型。