Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale, V. T. Michel 11, I-15100 Alessandria, Italy.
Dipartimento di Scienze del Farmaco, Università del Piemonte Orientale, Largo Donegani 2/3, I-28100 Novara, Italy.
Molecules. 2019 Feb 28;24(5):848. doi: 10.3390/molecules24050848.
The organic⁻inorganic hybrid materials have attracted great attention due to their improved or unusual properties that open promising applications in different areas such as optics, electronics, energy, environment, biology, medicine and heterogeneous catalysis. Different types of silicodactyl platforms grafted on silica inorganic supports can be used to synthesize hybrid materials. A careful evaluation of the dactyly of the organic precursors, normally alkoxysilanes, and of the type of interaction with the inorganic supports is presented. In fact, depending on the hydrophilicity of the silica surface (e.g., number and density of surface silanols) as well as on the grafting conditions, the hydrolysis and condensation reaction of the silylated moieties can involve only one or two out of three alkoxysilane groups. The influence of silicodactyly in the preparation of organic-inorganic silica-based hybrids is studied by TGA, Si, ¹H and C solid-state NMR and FTIR spectroscopies, with the support of Molecular Dynamics calculations. Computational studies are used to forecast the influence of the different grafting configurations on the tendency of the silane to stick on the inorganic surface.
由于其改善或独特的性质，有机-无机杂化材料引起了极大的关注，为光学、电子、能源、环境、生物学、医学和多相催化等不同领域的应用开辟了广阔的前景。不同类型的硅烷手性平台接枝到无机硅载体上，可以用来合成杂化材料。对有机前体（通常为烷氧基硅烷）的手性以及与无机载体的相互作用类型进行了仔细评估。事实上，根据二氧化硅表面的亲水性（例如，表面硅醇的数量和密度）以及接枝条件，硅烷化部分的水解和缩合反应可能只涉及三烷氧基硅烷中的一个或两个基团。通过热重分析（TGA）、硅、¹H 和 C 固态 NMR 和傅里叶变换红外光谱（FTIR）光谱研究了硅烷手性对有机-无机硅基杂化材料制备的影响，并结合分子动力学计算进行了支持。计算研究用于预测不同接枝构型对硅烷在无机表面附着倾向的影响。
