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Dynamic surface properties of amino-terminated self-assembled monolayers incorporating reversible CO2 chemistry / Fiaz S. Mohammed in Industrial & engineering chemistry research, Vol. 50 N° 13 (Juillet 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 13 (Juillet 2011) . - pp. 8034-8041 Titre : Dynamic surface properties of amino-terminated self-assembled monolayers incorporating reversible CO2 chemistry Type de document : texte imprimé Auteurs : Fiaz S. Mohammed, Auteur ; Sirikanya Wuttigul, Auteur ; Christopher L. Kitchens, Auteur Année de publication : 2011 Article en page(s) : pp. 8034-8041 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Carbon  dioxide  Surface  properties Résumé : An innovative approach to creating a dynamically controllable smart surface is proposed, incorporating the reversible reaction of CO2 with free primary and secondary amines of amino-terminated self-assembled monolayers (SAMs). Solutions of N-(2-an-dnoethyl)(3-an-dnopropyl)methyidimethoxysilane (AEAPMDS), N-(6-aminohexyl)-3-aminopropyitrimethoxysilane (AHAPTS), and trimethoxysilylpropyl(polyethleneimine) (PEI-silane) were exposed to CO2, producing the respective carbamate species. The reacted CO2 was readily released by application of moderate heating and reduced pressure. Theonogravametric analysis (TGA) showed a weight loss percentage corresponding to 1 mol of CO2 per 1 mol of diamine at roughly 50 °C, and attenuated total reflectance Fourier transform infrared (ATR FTIR) spectroscopy confirmed the formation of the carbamate species. Well-ordered amino-terminal SAMs of AEAPMDS, AHAPTS, and PEI-silane were prepared on silicon substrates from toluene solutions and were then exposed to CO2, The subsequent changes in the surface structure and wettability were characterized by variable-angle ellipsometry, atomic force microscopy (AFM), and static contact-angle goniometry. The SAMs showed a reversible change in layer thickness coupled with an increase in hydrophilicity upon CO2 exposure. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24332128 [article] Dynamic surface properties of amino-terminated self-assembled monolayers incorporating reversible CO2 chemistry [texte imprimé] / Fiaz S. Mohammed, Auteur ; Sirikanya Wuttigul, Auteur ; Christopher L. Kitchens, Auteur . - 2011 . - pp. 8034-8041. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 13 (Juillet 2011) . - pp. 8034-8041 Mots-clés : Carbon  dioxide  Surface  properties Résumé : An innovative approach to creating a dynamically controllable smart surface is proposed, incorporating the reversible reaction of CO2 with free primary and secondary amines of amino-terminated self-assembled monolayers (SAMs). Solutions of N-(2-an-dnoethyl)(3-an-dnopropyl)methyidimethoxysilane (AEAPMDS), N-(6-aminohexyl)-3-aminopropyitrimethoxysilane (AHAPTS), and trimethoxysilylpropyl(polyethleneimine) (PEI-silane) were exposed to CO2, producing the respective carbamate species. The reacted CO2 was readily released by application of moderate heating and reduced pressure. Theonogravametric analysis (TGA) showed a weight loss percentage corresponding to 1 mol of CO2 per 1 mol of diamine at roughly 50 °C, and attenuated total reflectance Fourier transform infrared (ATR FTIR) spectroscopy confirmed the formation of the carbamate species. Well-ordered amino-terminal SAMs of AEAPMDS, AHAPTS, and PEI-silane were prepared on silicon substrates from toluene solutions and were then exposed to CO2, The subsequent changes in the surface structure and wettability were characterized by variable-angle ellipsometry, atomic force microscopy (AFM), and static contact-angle goniometry. The SAMs showed a reversible change in layer thickness coupled with an increase in hydrophilicity upon CO2 exposure. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24332128