Colloidal maghemite nanoparticles with oxyhydroxide-like interface and chiroptical properties
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F20%3A73602518" target="_blank" >RIV/61989592:15310/20:73602518 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0169433220323242" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0169433220323242</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.apsusc.2020.147567" target="_blank" >10.1016/j.apsusc.2020.147567</a>
Alternative languages
Result language
angličtina
Original language name
Colloidal maghemite nanoparticles with oxyhydroxide-like interface and chiroptical properties
Original language description
Magnetic nanoparticles, mainly constituted of magnetite and maghemite, are widely used for environmental, biomedical and biotechnological applications. Herein, the synthesis and properties of maghemite nanoparticles characterized by chiroptical activity, representing an unprecedented feature for iron oxide nanoparticles, is described in detail. Among nanosized iron oxides, these maghemite nanoparticles stand out for the excellent colloidal stability in water and the witnessed ability to specifically bind selected molecules. The surface properties of nanoparticles were probed with As-III and As-V oxyacids, studied by x-ray photoelectron spectroscopy and correlated to circular dichroism. The dichroic signal of nanoparticles was differently influenced by the coordination of ligands. Crystalline vacancies on the nanomaterial surface were identified as the chiral centers responsible of the dichroic behavior and the selectivity toward ligands. The latter was correlated with the ability of restructuring the nanomaterial at the crystal truncation. Furthermore, surface binding sites emerged for bearing labile coordination water in analogy with iron oxyhydroxides. The present report, besides enriching the colloidal chemistry of iron oxide based nanomaterials, can stimulate further research on inorganic systems expressing intrinsic chiral properties.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10403 - Physical chemistry
Result continuities
Project
<a href="/en/project/EF17_048%2F0007323" target="_blank" >EF17_048/0007323: Development of pre-applied research in nanotechnogy and biotechnology</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
APPLIED SURFACE SCIENCE
ISSN
0169-4332
e-ISSN
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Volume of the periodical
534
Issue of the periodical within the volume
DEC
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
11
Pages from-to
"147567-1"-"147567-11"
UT code for WoS article
000582367700015
EID of the result in the Scopus database
2-s2.0-85089807593