|Title||Eumelanin coating of silica aerogel by supercritical carbon dioxide deposition of a 5,6-Dihydroxyindole thin film|
|Publication Type||Articolo su Rivista peer-reviewed|
|Year of Publication||2018|
|Authors||Caputo, G., Bonadies I., Migliaccio L., Caso M.F., and Pezzella A.|
|Keywords||Aerogels, Carbon dioxide, Coatings, Deposition, effluent treatment, Electron paramagnetic resonance spectroscopy, Electron spin resonance spectroscopy, Eumelanins, Melanin, Paramagnetic resonance, Physicochemical property, Silica, Silica aerogels, Silica gel, Spontaneous polymerization, Supercritical adsorption, Supercritical carbon dioxide deposition, Supercritical CO2, Supercritical fluid extraction|
Eumelanin integration in silica aerogel (SA) was achieved via supercritical adsorption of 5,6-dyhydroxyindole (DHI) from CO2. Notably, after the supercritical treatment, DHI evolved towards spontaneous polymerization, which resulted in uniform pigment development over the SA. The new material was characterized for its morphological and physicochemical properties, disclosing the formation of a eumelanin-like coating, as confirmed by UV-vis and electron paramagnetic resonance (EPR) spectroscopy. © 2018 by the authors.
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