• C-125-132-138

Giant fullerene formation through thermal treatment of fullerene soot

Authors: Jacob W. Martin*, Grant J. McIntosh, Rakesh Arul, Reece N. Oosterbeek, Markus Kraft, and Tilo Söhnel*

Reference: Carbon 125, 132-138, (2017)

Abstract

Graphical abstract Coalescence of fullerenes into giant fullerenes (Cn n > 100) has been observed in the gas phase and inside carbon nanotubes. In this work, we demonstrate the formation of giant fullerenes by heating fullerene soot. Extracting the majority of the magic number fullerenes (C60 and C70) allowed the underlying distribution of fullerenes in the solid state to be measured. Upon heating at 800-1000°C for 30-60 min under vacuum the mass distribution of fullerenes was found to shift toward larger masses. High resolution electron microscopy was used to compare the formation of giant fullerenes by thermal heating and electron beam irradiation, showing the former produced more isolated giant fullerene fragments >1 nm in size. The driving force for coalescence and growth by thermal heating was suggested to be vertex strain at pentagonal sites, providing a route towards the synthesis of fullerenes up to C300.


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Address: Department of Chemical Engineering and Biotechnology
University of Cambridge
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*Corresponding author:
Telephone: +6499239722
Address: School of Chemical Sciences
University of Auckland
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Auckland 1010
New Zealand
Website: Personal Homepage