Engineering interactions between nanoparticles using polymers

Nanoparticle assembly offers a versatile tool for constructing new structural materials with emergent or collective properties beyond individual nanoparticles. The achievement of desired properties and functions of these assembly materials often require delicate control over the interactions between nanoparticle building blocks. As of now, tremendous effort s have been devoted to manipulating the interparticle interactions by functionalizing the surface of nanoparticles with different ligands (e.g., small molecules, DNAs, proteins, and polymers). Among others, polymers are particularly attractive, owing to their tailorable molecular structures, rich functionalities, tunable responsiveness, superior biodegradability and biocompatibility, and easy mass production at low cost, etc . In this review, we present a summary of recent advances in engineering interparticle interactions between nanoparticles, especially inorganic nanoparticles with different sizes, shapes, and compositions, by tailoring the structurally defined polymers grafted or absorbed on the surface of nanoparticles. Discussions are focused on various interactions (i.e., steric repulsion, Coulombic interaction, hydrophobic interaction, hydrogen bonding, chemical reaction-induced recognitive interaction, and entropic effect) dominating the assembly of polymer modified nanoparticles. Furthermore, the effect of external fields (e.g., light field, electric field, etc .) on the interactions between polymer-modified nanoparticles is presented. & COPY; 2023 Published by Elsevier B.V.

Automated summary

Nanoparticle assembly is a versatile tool for creating new structural materials with unique properties that go beyond individual nanoparticles. To achieve desired properties and functions, precise control over the interactions between nanoparticle building blocks is necessary. This review summarizes recent advancements in engineering interparticle interactions between nanoparticles, particularly inorganic ones of different sizes, shapes, and compositions, by using structurally defined polymers grafted or absorbed on the nanoparticle surfaces. The discussion focuses on various interactions dominating the assembly, as well as the influence of external fields on polymer-modified nanoparticles.