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

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

Supramolecular Materials (Dec 2022)

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

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

Affiliations

Xiaolong Zeng: CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Anhui Key Laboratory of Optoelectronic Science and Technology, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China; Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
Yannick Nyquist: Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
Qijin Zhang: CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Anhui Key Laboratory of Optoelectronic Science and Technology, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China; Corresponding authors.
Hans-Jürgen Butt: Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
Si Wu: CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Anhui Key Laboratory of Optoelectronic Science and Technology, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China; Corresponding authors.

Journal volume & issue: Vol. 1
p. 100004

Abstract

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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.

Published in Supramolecular Materials

ISSN: 2667-2405 (Online)
Publisher: KeAi Communications Co., Ltd.
Country of publisher: China
LCC subjects: Science: Chemistry
Website: https://www.keaipublishing.com/en/journals/supramolecular-materials/

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