Abstract

聚合物接枝金纳米棒(AuNRs@polymer)不仅具有聚合物的稳定性、功能性和可设计性,还具有金纳米粒子(AuNPs)的光学、光热转换、等离子体等性质,在成像、光电器件和药物控释等领域具有重要的应用前景。两端接枝聚合物的金纳米棒(AuNRs@End-polymer)由于聚合物选择性接枝在金纳米棒的两端,易形成软硬兼具的哑铃状纳米粒子(类似ABA型嵌段共聚物)。哑铃状纳米粒子受其两端特殊的空间位阻影响,在受限空间中难以形成紧密稳定的肩并肩结构,而更倾向于形成倾斜、交叉或螺旋排列等新颖结构。本文系统地研究了三维受限空间的尺寸以及纳米粒子形貌等因素对AuNRs空间排布的影响,并构建了一系列有序组装结构。

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