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Gold nanotriangles with magnetite satellites
- This work describes the synthesis of hybrid particles of gold nanotriangles (AuNTs) with magnetite nanoparticles (MNPs) by using 1-mercaptopropyl-3-trimethoxysilan (MPTMS) and L-cysteine as linker molecules. Due to the combination of superparamagnetic properties of MNPs with optical properties of the AuNTs, nanoplatelet-satellite hybrid nanostructures with combined features become available. By using MPTMS with silan groups as linker molecule a magnetic "cloud" with embedded AuNTs can be separated. In presence of L-cysteine as linker molecule at pH > pH(iso) a more unordered aggregate structure of MNPs is obtained due to the dimerization of the L-cysteine. At pH < pH(iso) water soluble positively charged AuNTs with satellite MNPs can be synthesized. The time-dependent loading with MNP satellites under release of the extinction and magnetization offer a hybrid material, which is of special relevance for biomedical applications and plasmonic catalysis.
Author details: | Ricky Henning, Ferenc LiebigGND, Claudia Christina PrietzelGND, Bastian KlemkeORCiD, Joachim KoetzORCiDGND |
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DOI: | https://doi.org/10.1016/j.colsurfa.2020.124913 |
ISSN: | 0927-7757 |
ISSN: | 1873-4359 |
Title of parent work (English): | Colloids and surfaces : an international journal devoted to the principles and applications of colloid and interface science ; A, Physicochemical and engineering aspects |
Publisher: | Elsevier |
Place of publishing: | Amsterdam |
Publication type: | Article |
Language: | English |
Date of first publication: | 2020/09/05 |
Publication year: | 2020 |
Release date: | 2023/05/23 |
Tag: | HRTEM; L-Cysteine; Satellite hybrid; Superparamagnetic magnetite; UV-Vis-NIR; nanostructures; nanotriangles |
Volume: | 600 |
Article number: | 124913 |
Number of pages: | 7 |
Funding institution: | German Research FoundationGerman Research Foundation (DFG) [INST; 336/64-1] |
Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Chemie |
DDC classification: | 5 Naturwissenschaften und Mathematik / 54 Chemie / 540 Chemie und zugeordnete Wissenschaften |
Peer review: | Referiert |
License (German): | Keine öffentliche Lizenz: Unter Urheberrechtsschutz |