Abstract
In the present study, thermal stabilities of five new family of azocalix[4]arene mono ethyl ester derivatives, 4a–e, were investigated using thermogravimetry, differential thermogravimetry, and differential thermal analysis methods. It was found that all compounds showed thermal stability up to 236 °C averagely. After this temperature, decomposition of compounds starts gradually. The decomposition routes of 4a–c compounds are similar and occur with two stages. Ester alkyl groups decompose and remove from the structure in the first stage. Second stage corresponds to rest of structure decomposition. The decomposition routes of the 4d–e compounds are different from the decomposition routes of the 4a–c compounds. These compounds include halogen, and decomposition reactions realize with three and four stages respectively.
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Elçin, S., Çılgı, G.K., Karakuş, Ö.Ö. et al. A study on thermal behaviors of mono ethyl ester azocalix[4]arene derivatives. J Therm Anal Calorim 118, 719–722 (2014). https://doi.org/10.1007/s10973-014-3718-2
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DOI: https://doi.org/10.1007/s10973-014-3718-2