Light-induced assembly of colloidal nanoparticles based on photo-controlled metal–ligand coordination

Supramolecular Materials Pub Date : 2022-12-01 DOI:10.1016/j.supmat.2021.100004

Xiaolong Zeng , Yannick Nyquist , Qijin Zhang , Hans-Jürgen Butt , Si Wu

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引用次数: 8

Abstract

Self-assembly of colloidal nanoparticles is a promising approach for the fabrication of functional materials. Zeta potential strongly influences the self-assembly processes of nanoparticles. Light-induced zeta potential manipulation provides spatiotemporal resolution. However, current studies on photo-controllable zeta potential are based on ultraviolet (UV) light. In comparison with UV light, visible light is better suited to control the zeta potential of colloidal nanoparticles. In the present study, we applied visible light-responsive ruthenium (Ru) complexes, grafted onto the surface of silica nanoparticles (Ru-SNPs), to control their assembly. The Ru complexes were photoresponsive. Irradiation of Ru-SNPs induced the release of Ru complexes from the nanoparticle surface. The released Ru caused a decrease in the zeta potential of colloidal Ru-SNPs that further changed the assembly behavior and led to the aggregation of Ru-SNPs.

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基于光控金属配体配位的胶体纳米颗粒的光诱导组装

胶体纳米粒子的自组装是一种很有前途的功能材料制造方法。Zeta电位对纳米粒子的自组装过程影响很大。光诱导zeta电位操纵提供时空分辨率。然而，目前对光可控zeta电位的研究都是基于紫外光。与紫外光相比，可见光更适合于控制胶体纳米颗粒的zeta电位。在本研究中，我们将可见光响应钌(Ru)配合物接枝到二氧化硅纳米颗粒(Ru- snps)表面，以控制其组装。钌配合物具有光响应性。辐照钌单核苷酸多态性诱导钌络合物从纳米颗粒表面释放。Ru的释放使胶体Ru- snps的zeta电位降低，进而改变其组装行为，导致Ru- snps聚集。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Supramolecular Materials

CiteScore

6.70

自引率

0.00%

发文量