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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Role of Organic Ligands Orientation on the Geometrical and Optical Properties of Au-25(SCH3)18(0)
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Role of Organic Ligands Orientation on the Geometrical and Optical Properties of Au-25(SCH3)18(0)

机译:有机配体取向对AU-25(SCH3)18(0)的几何和光学性质的作用

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摘要

The role of the organic group orientation on the geometrical and optical properties in a neutral Au-25 nanocluster has been analyzed through density functional theory (DFT) and time-dependent density functional theory (TDDFT) simulations. Starting from two different X-ray diffraction (XRD) resolved structures which differ in the ligand orientation, we optimized the methyl substituted neutral nanoclusters at the B3LYP//6-31G(d,p)/LANL2DZ level, finding remarkable differences on the bond length and the symmetry of the gold kernels. Despite these differences, the TDDFT estimated absorption features of the two clusters are quite similar, showing that ligand orientation brings minor effects on the optical properties of the nanoclusters. All obtained results are in good agreement with available experimental data.
机译:通过密度泛函理论(DFT)和时间依赖性密度泛函理论(TDDFT)模拟,分析了有机基团取向对中性AU-25纳米光泽颗粒的几何和光学性质的作用。 从两种不同的X射线衍射(XRD)分离的结构,在配体取向上不同,我们在B3LYP // 6-31G(D,P)/ LANL2DZ水平上优化了甲基取代的中性纳米细胞,发现了对债券的显着差异 金内核的长度和对称性。 尽管存在这些差异,但两个簇的TDDFT估计的吸收特征非常相似,表明配体取向为纳米能器的光学性质带来了微小的影响。 所有获得的结果都与可用的实验数据一致。

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