What is it about?
Vapor-deposited glasses of toluene and ethylbenzene have been characterized by in situ ac chipnanocalorimetry. The kinetic stability of the most stable toluene and ethylbenzene glasses is comparable to that observed for other stable glasses formed by vapor deposition.
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Why is it important?
We observe that vapor-deposited glasses have up to 4% lower heat capacities than the ordinary glass. The largest heat capacity decrease and the most kinetically stable glasses of toluene and ethylbenzene are observed in a range of deposition temperatures between 0.75 Tg and 0.96 Tg. Compared to larger molecules, deposition rate has a minor influence on the kinetic stability of these glasses. For both toluene and ethylbenzene, the kinetic stability is correlated with the heat capacity.
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This page is a summary of: In situ investigation of vapor-deposited glasses of toluene and ethylbenzene via alternating current chip-nanocalorimetry, The Journal of Chemical Physics, January 2013, American Institute of Physics,
DOI: 10.1063/1.4773354.
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