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Autori: Jhony Orbulescu and Roger M. Leblanc
Editorial: G. Schatz, American Chemical Society, Journal of Physical Chemistry C, 113, p.5313-5315, 2009.
Herein, it is shown that aromatic spreading solvents can be detected using in situ UV spectroscopy at the air – water interface beyond the common accepted time for evaporation of 10 – 20 min in the preparation of a Langmuir monolayer. Toluene and benzene, even though not significantly surface active, can be detected, and their behavior as a function of time and temperature is investigated. To our knowledge, this is the first time that the vibrational fine structure of the benzenoid bands are detected at the air – water interface.
Cuvinte cheie: Langmuir monolayer, temperature effect, time effect, evaporation, aromatic spreading solvents