Centre Interdisciplinaire de Nanoscience de Marseille, CNRS, Aix-Marseille Université, France.
J Phys Chem B. 2009 Oct 1;113(39):13026-34. doi: 10.1021/jp903021e.
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.
本工作研究了云母表面上的氨丙基三甲氧基硅烷（AAPS）薄膜，以进一步将其用作 DNA 固定化的基底。我们通过原子力显微镜、X 射线光电子能谱和接触角测量研究了 N-（2-氨乙基）-3-氨丙基三甲氧基硅烷（AAPS）在云母表面上的沉积。我们探索了在水溶液和气相中的沉积。在水溶液中，发现分子与云母表面的相互作用取决于 pH 值。在气相沉积的情况下，得到了由第一层和随后的两层组成的多层膜。这是首次观察到氨丙基硅烷在云母上的膜组织。
