首页> 外文会议>NATO Advanced Research Workshop on Pure and Applied Surface Chemistry and Nanomaterials for Human Life and Environmental Protection >INTERACTION OF SOME BIOMOLECULES WITH MODIFIED NANOSILICA SURFACES STUDIED BY QUANTUM CHEMISTRY
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INTERACTION OF SOME BIOMOLECULES WITH MODIFIED NANOSILICA SURFACES STUDIED BY QUANTUM CHEMISTRY

机译:一些生物分子与Quantum Chemistry研究改性纳米菌表面的相互作用

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The equilibrium geometries and heat of adsorption values for some complexes of amino acids and the helical section of human serum albumin on a silica surface, in both gaseous phase and water solutions, have been calculated using quantum chemical methods. In this study a suitable method is proposed for calculating the interaction energy. A probable mechanism has been suggested for the interaction between a hydroxylated silica nanoparticle, with negative surface charge, and lipid molecules. As both interacting species have the (negative) charge, and experiment gives evidence of their cohesion, in order to provide converging clusters we believe that hydronium ions are stationed between these species. If the total charge of this supramolecular structure is assumed to be zero, an optimization of geometric parameters results in the formation of a water-bonded complex.
机译:使用量子化学方法计算了在气相和水溶液中,在二氧化硅表面上的氨基酸和人血清白蛋白的一些络合物的平衡几何和吸附物热量。在本研究中,提出了一种用于计算相互作用能量的合适方法。已经提出了羟基化二氧化硅纳米粒子与阴性表面电荷和脂质分子之间的相互作用的可能性机制。由于互动物种都有(负)电荷,并且实验给出了他们的凝聚力的证据,以便提供融合群集我们认为散氢离子在这些物种之间驻扎。如果假设这种超分子结构的总电荷为零,则几何参数的优化导致形成水键合复合物。

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