Departmental Papers (MSE)

Document Type

Journal Article

Date of this Version

July 2005

Comments

Copyright American Physical Society. Reprinted from Physical Review B, Volume 72, Issue 4, Article 045440, July 2005, 5 pages.
Publisher URL: http://dx.doi.org/10.1103/PhysRevB.72.045440

Abstract

Liquid anhydrous sulfuric acid forms a partly ordered structure in the presence of single-walled carbon nanotubes (SWNTs). X-ray scattering from aligned fibers immersed in acid shows the formation of molecular shells wrapped around SWNTs. Differential scanning calorimetry of SWNT-acid suspensions exhibits concentration-dependent supercooling/melting behavior, confirming that the partly ordered molecules are a new phase. We propose that charge transfer between nanotube π electrons and highly oxidizing superacid is responsible for the unique partly ordered structure.

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Date Posted: 31 July 2005

This document has been peer reviewed.