KOPS - The Institutional Repository of the University of Konstanz

Microscopic Analysis of Heterogeneous Nucleation of Nanoparticle Superstructures

Microscopic Analysis of Heterogeneous Nucleation of Nanoparticle Superstructures

Cite This

Files in this item

Files Size Format View

There are no files associated with this item.

GÖPPERT, Ann-Kathrin, Guillermo GONZÁLEZ-RUBIO, Helmut CÖLFEN, 2020. Microscopic Analysis of Heterogeneous Nucleation of Nanoparticle Superstructures. In: The Journal of Physical Chemistry A. American Chemical Society (ACS). 124(27), pp. 5657-5663. ISSN 1089-5639. eISSN 1520-5215. Available under: doi: 10.1021/acs.jpca.0c01844

@article{Goppert2020-07-09Micro-50446, title={Microscopic Analysis of Heterogeneous Nucleation of Nanoparticle Superstructures}, year={2020}, doi={10.1021/acs.jpca.0c01844}, number={27}, volume={124}, issn={1089-5639}, journal={The Journal of Physical Chemistry A}, pages={5657--5663}, author={Göppert, Ann-Kathrin and González-Rubio, Guillermo and Cölfen, Helmut} }

<rdf:RDF xmlns:dcterms="http://purl.org/dc/terms/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:bibo="http://purl.org/ontology/bibo/" xmlns:dspace="http://digital-repositories.org/ontologies/dspace/0.1.0#" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:void="http://rdfs.org/ns/void#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > <rdf:Description rdf:about="https://kops.uni-konstanz.de/rdf/resource/123456789/50446"> <dc:creator>Cölfen, Helmut</dc:creator> <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2020-08-05T12:12:42Z</dc:date> <dcterms:title>Microscopic Analysis of Heterogeneous Nucleation of Nanoparticle Superstructures</dcterms:title> <dc:language>eng</dc:language> <dc:contributor>González-Rubio, Guillermo</dc:contributor> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2020-08-05T12:12:42Z</dcterms:available> <dc:contributor>Göppert, Ann-Kathrin</dc:contributor> <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/rdf/resource/123456789/29"/> <dcterms:abstract xml:lang="eng">Nucleation phenomena play an important role in our world, and understanding them is of major interest. However, we lack analytical methods with the sufficient temporal and spatial resolution to analyze nucleation processes. In this work we used CTAB-stabilized gold nanocubes as a model system for nucleation, meaning the nanoparticles act like ions or atoms and built up larger superstructures comparable to normal nucleation phenomena. Thereby we analyzed the heterogeneous nucleation of the gold nanocubes on hydrophobized and negatively charged mica surfaces with a combination of UV–vis–NIR spectroscopy and light microscopy. With the plasmon resonance of the gold nanocubes we gained valuable information about the early nucleation of the particles and their concentration in solution via UV–vis–NIR spectroscopy. The combination with a light microscope enabled the simultaneous detection of nucleated species on the surfaces and opened the possibility to analyze the kinetics of the heterogeneous nucleation process. With this, we were able to determine the nucleation rates. While the hydrophobized surfaces did not influence the nucleation of the gold nanocubes, the negatively charged surfaces greatly promoted the nucleation. Thereby, we could demonstrate that the combination of simple and commonly available light microscopy and optical spectroscopies in general is a suitable and easy strategy to analyze heterogeneous nucleation processes directly in solution on a relevant statistical basis.</dcterms:abstract> <dc:creator>González-Rubio, Guillermo</dc:creator> <dc:creator>Göppert, Ann-Kathrin</dc:creator> <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/rdf/resource/123456789/29"/> <foaf:homepage rdf:resource="http://localhost:8080/jspui"/> <dc:contributor>Cölfen, Helmut</dc:contributor> <dcterms:issued>2020-07-09</dcterms:issued> <bibo:uri rdf:resource="https://kops.uni-konstanz.de/handle/123456789/50446"/> </rdf:Description> </rdf:RDF>

This item appears in the following Collection(s)

Search KOPS


My Account