Abstract
A study has been made of the interaction of azobenzene vapor with a series of cation-exchanged montmorillonites. Cu2+- and Ag+-clays give basal spacings ≥ 20Å. The azobenzene retains its trans conformation in the clay and can be extracted with ether. If the intercalate is heated above 120°C then there is catalytic decomposition leaving a black product. Infrared spectra of an extract from this product suggests that it might be made up of a mixture of amines. A photo-electron spectroscopic study shows that the nitrogen is in two distinct chemical environments both in the initial and in the blackened intercalates. The C:N ratio remains at 6:1 throughout.
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Adams, J.M., Reid, P.I. Azobenzene Intercalates of Montmorillonite. Clays Clay Miner. 25, 228–230 (1977). https://doi.org/10.1346/CCMN.1977.0250309
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DOI: https://doi.org/10.1346/CCMN.1977.0250309