From phosphine-stabilised towards naked Au8clusters through ZIF-8 encapsulation
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15640%2F21%3A73612283" target="_blank" >RIV/61989592:15640/21:73612283 - isvavai.cz</a>
Result on the web
<a href="https://pubs.rsc.org/en/content/articlelanding/2021/ME/D1ME00107H" target="_blank" >https://pubs.rsc.org/en/content/articlelanding/2021/ME/D1ME00107H</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/d1me00107h" target="_blank" >10.1039/d1me00107h</a>
Alternative languages
Result language
angličtina
Original language name
From phosphine-stabilised towards naked Au8clusters through ZIF-8 encapsulation
Original language description
In contrast to the corresponding inert bulk material, nanoscale gold clusters bear remarkable optical and catalytic properties that are highly dependent on the cluster size. Metal-organic frameworks (MOFs) have recently been identified as attractive host matrices for metallic clusters due to their confining porous environment. Through the rational choice of sulfonated ligands, we report the first encapsulation of a phosphine-stabilised Au-8 cluster into ZIF-8 via a bottle-around-ship approach. The cluster integrity within the MOF was proven by thorough characterisation including diffuse reflectance UV-visible spectroscopy and high-resolution transmission electron microscopy with elemental mapping. This strategy enabled precise control of cluster loadings from low (1.1 wt% Au) to high (8.2 wt% Au) values. The stabilising effect provided by the MOF was further analysed in temperature-dependent studies that revealed no cluster agglomeration up to 350 degrees C in vacuo. Furthermore, stable, confined Au clusters were produced via an original atomicity-preserving ligand-stripping procedure by taking advantage of phosphine oxidation. Thus, capitalising on ZIF-8 hosting ability for metal nanoclusters while exploiting confined space for activation delivers a promising way towards producing and studying atom-precise clusters.
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
21001 - Nano-materials (production and properties)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Molecular Systems Design & Engineering
ISSN
2058-9689
e-ISSN
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Volume of the periodical
6
Issue of the periodical within the volume
11
Country of publishing house
GB - UNITED KINGDOM
Number of pages
7
Pages from-to
876-882
UT code for WoS article
000696503600001
EID of the result in the Scopus database
2-s2.0-85118693536