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Eumelanin coating of silica aerogel by supercritical carbon dioxide deposition of a 5,6-Dihydroxyindole thin film

TitoloEumelanin coating of silica aerogel by supercritical carbon dioxide deposition of a 5,6-Dihydroxyindole thin film
Tipo di pubblicazioneArticolo su Rivista peer-reviewed
Anno di Pubblicazione2018
AutoriCaputo, G., Bonadies I., Migliaccio L., Caso M.F., and Pezzella A.
RivistaMaterials
Volume11
ISSN19961944
Parole chiaveAerogels, 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
Abstract

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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URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85052244271&doi=10.3390%2fma11091494&partnerID=40&md5=1c56f0c797cad85dfb5da83f2028ac74
DOI10.3390/ma11091494
Citation KeyCaputo2018