Affiliation:
1. Institute of Physical Chemistry and Electrochemistry Leibniz Universität Hannover 30167 Hanover Germany
2. Cluster of Excellence PhoenixD (Photonics, Optics and Engineering – Innovation Across Disciplines) Leibniz Universität Hannover 30167 Hanover Germany
3. Institute of Technical Physics and Materials Science Centre for Energy Research Budapest 1121 Hungary
4. Laboratory for Nano and Quantum Engineering Leibniz Universität Hannover 30167 Hanover Germany
Abstract
AbstractIn this work, the influence of two different types of cations on the gel formation and structure of mixed gel networks comprised of semiconductor (namely CdSe/CdS nanorods NR) and Au nanoparticles (NP) as well as on the respective monocomponent gels is investigated. Heteroassemblies built from colloidal building blocks are usually prepared by ligand removal or cross‐linking, thus, both the surface chemistry and the destabilising agent play an essential role in the gelation process. Due to the diversity of the composition, morphology, and optical properties of the nanoparticles, a versatile route to fabricate functional heteroassemblies is of great demand. In the present work, the optics, morphology, and gelation mechanism of pure semiconductor and noble metal as well as their mixed nanoparticle gel networks are revealed. The influence of the gelation agents (bivalent and trivalent cations) on the structure‐property correlation is elucidated by photoluminescence, X‐ray photoelectron spectroscopy, and electron microscopy measurements. The selection of cations drastically influences the nano‐ and microstructure of the prepared gel network structures driven by the affinity of the cations to the ligands and the nanoparticle surface. This gelation technique provides a new platform to control the formation of porous assemblies based on semiconductor and metal nanoparticles.
Funder
H2020 European Research Council
Deutsche Forschungsgemeinschaft
Hungarian Scientific Research Fund
Nemzeti Kutatási, Fejlesztési és Innovaciós Alap
Subject
Biomaterials,Biotechnology,General Materials Science,General Chemistry
Cited by
3 articles.
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