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Establishing a kinetic control regime for the decomposition of brominated fullerene derivatives: C<inf>60</inf>Br<inf>24</inf> and C<inf>60</inf>Br<inf>6</inf>
Date Issued
04-06-2003
Author(s)
Shankara Gayathri, S.
Kamruddin, M.
Tyagi, A. K.
Indian Institute of Technology, Madras
Abstract
This first report on temperature programmed decomposition of C60Br24 and C60Br6 using evolved gas analysis and mass spectrometry (EGA-MS) in the temperature range 323-523 K revealed multiple decomposition routes. The deconvoluted decomposition profiles with bi- and tri-modal features in C60Br24 and C60Br6, respectively, indicated evolution of interstitial bromines at a higher temperature as compared to the release of bonded bromines. C60Br6, on decomposition yields cyclopentadienyl radical intermediate and the overall process was found to be diffusion-reaction limited with a diffusion coefficient associated with the release of the interstitial bromine as 4.3 × 10-19 cm2 s-1. © 2003 Elsevier Science B.V. All rights reserved.
Volume
374