Dendrimer–Dye Assemblies as Templates for the Formation of Gold Nanostructures
Dendrimer–Dye Assemblies as Templates for the Formation of Gold Nanostructures
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DOI：
10.1021/acs.macromol.7b00752
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发表时间：
2017-09
期刊：
影响因子：
5.5
通讯作者：
J. Düring;W. Alex;Alexander Zika;Robert Branscheid;E. Spiecker;F. Gröhn
中科院分区：
文献类型：
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作者：
J. Düring;W. Alex;Alexander Zika;Robert Branscheid;E. Spiecker;F. Gröhn
树枝状聚合物-染料组装体被用作新型超分子纳米反应器，用于形成各种金纳米结构。利用动态光散射、紫外-可见光谱、透射电子显微镜（TEM）、低温透射电子显微镜（cryo-TEM）和高分辨透射电子显微镜（HRTEM）对有机-无机杂化体系进行了研究。我们表明，混合组装的形状是由选择和积木的比例。组装体中的金纳米颗粒的形状和尺寸由还原剂控制。金形态的可访问范围从小到球形，椭圆形，多面，大到高度各向异性。这种方法可能会开辟新的混合系统的催化或在生物医学领域的应用。
Dendrimer–dye assemblies are used as novel supramolecular nanoreactors for the formation of various gold nanostructures. The organic–inorganic hybrid systems are investigated with dynamic light scattering, UV–vis spectroscopy, and transmission electron microscopy (TEM) as well as cryo-TEM and high-resolution TEM (HRTEM). We show that the shape of the hybrid assemblies is determined by the choice and the ratio of the building blocks. Shape and size of the gold nanoparticles within the assemblies are controlled by the reducing agent. The accessible range of gold morphologies extends from small and spherical, over ellipsoidal, faceted, and large to highly anisotropic. The approach may open the way to new hybrid systems with applications in catalysis or in the biomedical field.