作者：Xuejie Liu, Jinlan Li, Nan Yan, Wei Jiang
关键字：杂化纳米棒, 区域选择性分布, 无机纳米粒子, 二维嵌段共聚物纳米片, 核壳结构
论文来源：期刊
具体来源：ACS Macro Letters, 2022, 11(4), 549-554
发表时间：2022年

摘要：具有功能无机纳米粒子（NPs）区域选择性分布的无机/有机杂化材料因其迷人集成性能而受到持续关注，但在特定杂化纳米棒中实现NPs区域选择性分布仍是巨大挑战。本文报道了通过选择性解组装制备的NPs/聚苯乙烯-b-聚4-乙烯基吡啶（PS-b-P4VP）杂化纳米片，构建具有NPs区域选择性分布的均匀核壳杂化纳米棒。通过精确调节金属前驱体与P4VP嵌段的络合能力、P4VP嵌段质子化程度和络合时间等参数，可获得NPs均匀分布的NPs/聚合物核壳杂化纳米棒，以及NPs选择性分布于两端的哑铃状杂化纳米棒。该发现为设计具有无机NPs区域选择性分布的各向异性功能杂化材料提供了独特见解。

Abstract：The inorganic/organic hybrid materials with regioselective distribution of functional inorganic nanoparticles (NPs) have received constant interest attributed to fascinating integrated properties. However, there remains a formidable challenge in realizing the regioselective distribution of NPs for the specific hybrid nanorods. Herein, we report the construction of uniform core-shell hybrid nanorods with the regioselective distribution of inorganic NPs by selectively disassembling the prepared NPs/polystyrene-block-poly(4-vinyl-pyridine) (PS-b-P4VP) hybrid nanosheets. Moreover, through precisely adjusting the parameters, such as complexation ability between the metal precursor and P4VP blocks, the protonation degree of P4VP blocks and complexation time, the NPs/polymer core-shell hybrid nanorod with the uniform distribution of NPs, and dumbbell-like hybrid nanorods with selective distribution of NPs at both ends can be obtained. This finding reveals a unique insight into the design of the anisotropic functional hybrid materials with the regioselective distribution of inorganic NPs.

论文链接：https://doi.org/10.1021/acsmacrolett.1c00791