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Nonisothermal kinetic analysis of the chemiluminescence from tetramethyl-1,2-dioxetane

✍ Scribed by G. D. Mendenhall; J. C. Tauschek; C. A. Ogle

Publisher
John Wiley and Sons
Year
1981
Tongue
English
Weight
463 KB
Volume
13
Category
Article
ISSN
0538-8066

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✦ Synopsis

Abstract

A computerized method is given for the evaluation of Arrhenius parameters which describe the chemiluminescent decomposition of tetramethyl‐1,2‐dioxetane. The parameters were determined in several solvents by linear regression methods and the equation ln ln \documentclass{article}\pagestyle{empty}\begin{document}$ [(\sum\nolimits_0^\infty I - \sum\nolimits_0^t I)/(\sum\nolimits_0^\infty I - \sum\nolimits_0^t I - \sum\nolimits_0^{t + \Delta t} I)] = \ln, (A_1 \Delta t) - E_1 /RT$\end{document}, where I refers to photons counted by increments of Ξ”__t__, and E~1~ and A are the first‐order Arrhenius parameters. The average of E~1~ and log A~1~ (s^βˆ’1^) from this method from six runs in CCl~4~ with initial concentrations of 4.9 Γ— 10^βˆ’5^‐8.45 Γ— 10^βˆ’4^M were 27.21 Β± 0.88 kcal/mol (113.7 Β± 3.7 kJ/mol) and 13.88 Β± 0.50, respectively. Simulated curves of chemiluminescence versus time were obtained with the use of a computer program and an auxiliary plotter.

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