The thermal stability of imidazolium based ionic liquid (IL) 1-butyl-3-methylimidazolium hexafluorophosphate ([BMI][PF6]) in a confined geometry is analysed. It has been found that the decomposition of IL starts at an earlier temperature upon confinement in nanopores. Early decomposition of confined IL is due to the breaking of end group alkyl chains of the [BMI] ring, which is explained by a phenomenological ‘hinged spring’ model.
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Singh et al. (2010) studied this question.
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