Formation of aminosilane film on mica.
Aminosilane film on mica is investigated in this work for further use as a substrate for DNA immobilization. We study the deposition of N-(2-aminoethyl)-3-aminopropyltrimethoxysilane (AAPS) on mica surfaces by atomic force microscopy, X-ray photoelectron spectroscopy, and contact angle measurements. Deposition both in aqueous solution and in vapor-phase is explored. In aqueous solution, it is found that the interactions of molecules with the mica surface are pH-dependent. In the case of vapor phase deposition, a multilayer film composed of a first monolayer and successive bilayers is obtained. This is the first observation of the organization of aminosilane films on mica.
Mourougou-Candoni
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N
Centre Interdisciplinaire de Nanoscience de Marseille, CNRS, Aix-Marseille Université, France. candoni@cinam.univ-mrs.fr
Thibaudau
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F
D000538:Aluminum Silicates / Q000737:chemistry*; D004247:DNA / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D018625:Microscopy, Atomic Force; D008968:Molecular Conformation; D056951:Photoelectron Spectroscopy; D011437:Propylamines / Q000737:chemistry*; D012821:Silanes / Q000737:chemistry*; D012826:Silicone Elastomers; D013499:Surface Properties
D000538:Aluminum Silicates; D011437:Propylamines; D012821:Silanes; D012826:Silicone Elastomers; C006194:aminoethyl-aminopropyl-trimethoxysilane; D004247:DNA; C011934:mica