From phosphine-stabilised towards naked Au8clusters through ZIF-8 encapsulation

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

From phosphine-stabilised towards naked Au8clusters through ZIF-8 encapsulation

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

From phosphine-stabilised towards naked Au8clusters through ZIF-8 encapsulation

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

21001 - Nano-materials (production and properties)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Molecular Systems Design &amp; Engineering

ISSN

2058-9689

e-ISSN

—

Svazek periodika

6

Číslo periodika v rámci svazku

11

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

7

Strana od-do

876-882

Kód UT WoS článku

000696503600001

EID výsledku v databázi Scopus

2-s2.0-85118693536