Chain-length effect on binary superlattices of polymer-tethered nanoparticles,Materials Chemistry Frontiers

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Chain-length effect on binary superlattices of polymer-tethered nanoparticles
Materials Chemistry Frontiers ( IF 6.0 ) Pub Date : 2020-05-06 , DOI: 10.1039/d0qm00194e
Ke Wang _{1,

2,

3,

4,

5} , Fan Li _{1,

2,

3,

4,

5} , Seon-Mi Jin _{6,

7,

8,

9} , Kui Wang _{1,

2,

3,

4,

5} , Di Tian _{1,

2,

3,

4,

5} , Mubashir Hussain _{1,

2,

3,

4,

5} , Jiangping Xu _{1,

2,

3,

4,

5} , Lianbin Zhang _{1,

2,

3,

4,

5} , Yonggui Liao _{1,

2,

3,

4,

5} , Eunji Lee _{6,

7,

8,

9} , Gi-Ra Yi _{9,

10,

11,

12} , Xiaolin Xie _{1,

2,

3,

4,

5} , Jintao Zhu _{1,

2,

3,

4,

5}

Affiliation

Binary inorganic nanoparticles (NPs) can be assembled into various types of superlattices depending on the size ratio, shape, and interparticle potential, which may tailor the mechanical, optical and electronic properties. Here, polymer-stabilized gold NPs are assembled into binary nanoparticle superlattices (BNSLs) and their structures were precisely controlled by tuning the size ratio of NPs as well as the chain length of polymer ligands. Typically, binary gold NPs with short-chain polymer ligands showed the phase behaviors of hard-sphere colloids. By contrast, ones with long-chain polymer ligands showed the phase behavior of soft-sphere binary colloids. Interestingly, mixed binary NPs with short-chain and long-chain polymer ligands showed unnatural binary NP superlattices in thin films, in which small NPs are contained in octahedral voids of the regular HCP lattice. Our finding can be further extended to other types of functional NPs, which may tune various properties for devices.

中文翻译：

链长对聚合物束缚纳米颗粒二元超晶格的影响

可以根据尺寸比，形状和粒子间电势将二元无机纳米粒子（NPs）组装成各种类型的超晶格，这可以调整机械，光学和电子性能。在这里，将聚合物稳定的金纳米粒子组装成二元纳米粒子超晶格（BNSL），并通过调节纳米粒子的尺寸比以及聚合物配体的链长来精确控制其结构。通常，具有短链聚合物配体的二元金纳米颗粒显示出硬球体胶体的相行为。相比之下，具有长链聚合物配体的聚合物表现出软球二元胶体的相行为。有趣的是，具有短链和长链聚合物配体的混合二元NP在薄膜中显示出不自然的二元NP超晶格，其中小NP包含在常规HCP晶格的八面体空隙中。我们的发现可以进一步扩展到其他类型的功能NP，它们可能会调整设备的各种属性。

更新日期：2020-07-02

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