Abstract：
Arrays of nanoparticle (NP) clusters with controlled architectures show broad applications in nanolasers, sensors, and photocatalysis, but the fabrication of these arrays on substrates remains a grand challenge. This review presents a highly effective polymer-based strategy for the process-directed self-assembly of binary polyelectrolyte-grafted NPs (PGNPs) bearing opposite charges into stable colloidal molecules (CMs) on substrates via electrostatic interactions. The coordination number (x) of ABx CMs can be tuned by adjusting the pH or ionic strength of the solution or by employing different combinations of PGNPs with varying charge densities. Large-area CMs with diverse structures ranging from AB to AB7 can be constructed on substrates in high yields. This approach is applicable to PGNPs with different cores of NPs. This assembly strategy offers a useful tool for the fabrication of structurally precise assemblies on substrates with broad applications.
摘要：
具有受控结构的纳米粒子（NP）簇阵列在纳米激光器中显示出广泛的应用，传感器,和光催化，但是在衬底上制造这些阵列仍然是一个巨大的挑战。这篇综述提出了一种高效的基于聚合物的策略，用于通过静电相互作用将带有相反电荷的二元聚电解质接枝NP（PGNP）的过程定向自组装成稳定的胶体分子（CM）。ABxCM的配位数(X)可以通过调节溶液的pH或离子强度或通过采用具有不同电荷密度的PGNP的不同组合来调节。可以在衬底上以高产率构建具有从AB到AB7的各种结构的大面积CM。这种方法适用于具有不同NP核的PGNP。这种组装策略为在具有广泛应用的基板上制造结构精确的组件提供了有用的工具。
