The formation and the optical features of two-dimensional aggregates formed by DNA-directed immobilization and cross-linking of bifunctional DNA–gold nanoparticles at flat gold substrates are analyzed. The samples are structurally characterized by atomic force microscopy to evaluate the particle size, the particle densities, and the degree of aggregation. The optical characteristics determined by UV/visible measurements are correlated with the structural features observed.

中文翻译：

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二维交联 DNA/金纳米粒子缀合物的制备、结构和光学特征


分析了通过 DNA 定向固定和交联双功能 DNA-金纳米粒子在平面金基底上形成的二维聚集体的形成和光学特征。通过原子力显微镜对样品进行结构表征，以评估颗粒尺寸、颗粒密度和聚集程度。通过紫外/可见光测量确定的光学特性与观察到的结构特征相关。