Reflection-absorption IR Spectroscopy Of Organic Monolayers On Aluminum Surfaces

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Abstract
The IR absorption spectrum of stearic acid monolayers on oxidized Al surfaces has been investigated as a function of substrate temperature. The spectral changes observed at elevated temperatures are associated with increased disorder in the adsorbate. These changes are reversible on cooling if the maximum temperature reached during heating does not exceed a critical value. Recovery generally occurs over a time interval of hours. Similar results were obtained for stearic acid bi-layers deposited on gold substrates.

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