Divalent metal nanoparticles
Divalent metal nanoparticles
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DOI：
10.1126/science.1133162
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发表时间：
2007-01-19
期刊：
影响因子：
56.9
通讯作者：
Stellacci, Francesco
中科院分区：
文献类型：
--
作者：
DeVries, Gretchen A.;Brunnbauer, Markus;Stellacci, Francesco
纳米颗粒可以用作超晶体或离子液体等材料的构建块。然而，它们缺乏像原子和分子那样沿着特定方向键合的能力。我们报告了一种简单的方法，将目标分子具体放置在金属纳米颗粒分子涂层中的两个完全相反的位置。这种方法是基于当曲面上覆盖有有序的单分子膜时必须形成的极奇点的功能化，例如相分离的配体混合物。放置在这些极性缺陷处的分子被用作化学手柄，以形成纳米粒子链，而纳米粒子链又可以生成独立的薄膜。
Nanoparticles can be used as the building blocks for materials such as supracrystals or ionic liquids. However, they lack the ability to bond along specific directions as atoms and molecules do. We report a simple method to place target molecules specifically at two diametrically opposed positions in the molecular coating of metal nanoparticles. The approach is based on the functionalization of the polar singularities that must form when a curved surface is coated with ordered monolayers, such as a phase-separated mixture of ligands. The molecules placed at these polar defects have been used as chemical handles to form nanoparticle chains that in turn can generate self-standing films.