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Title: Fabrication of Au25(SG)18–ZIF-8 Nanocomposites: A Facile Strategy to Position Au25(SG)18 Nanoclusters Inside and Outside ZIF-8

Journal Article · · Advanced Materials
 [1];  [1];  [1];  [2];  [3];  [4]; ORCiD logo [1];  [1]
  1. Sun Yat-Sen Univ., Guangzhou (China). School of Chemistry. Key Lab. of Environment and Energy Chemistry of Guangdong Higher Education Inst.
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences. Chemical Science Division
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences. Materials Science and Technology Division
  4. Sun Yat-Sen Univ., Guangzhou (China). Instrumental Analysis and Research Centre
+ Show Author Affiliations

Multifunctional composite materials are currently highly desired for sustainable energy applications. A general strategy to integrate atomically precise Au25(SG)18 with ZIF-8 (Zn(MeIm)2, MeIm = 2-methylimidazole), is developed in this paper via the typical Zn-carboxylate type of linkage. Au25(SG)18 are uniformly encapsulated into a ZIF-8 framework (Au25(SG)18@ZIF-8) by coordination-assisted self-assembly. In contrast, Au25(SG)18 integrated by simple impregnation is oriented along the outer surface of ZIF-8 (Au25(SG)18/ZIF-8). The porous structure and thermal stability of these nanocomposites are characterized by N2 adsorption–desorption isothermal analysis and thermal gravimetric analysis. The distribution of Au25(SG)18 in the two nanocomposites is confirmed by electron microscopy, and the accessibility of Au25(SG)18 is evaluated by the 4-nitrophenol reduction reaction. The as-prepared nanocomposites retain the high porosity and thermal stability of the ZIF-8 matrix, while also exhibiting the desired catalytic and optical properties derived from the integrated Au25(SG)18 nanoclusters (NCs). Au25(SG)18@ZIF-8 with isolated Au25 sites is a promising heterogenous catalyst with size selectivity imparted by the ZIF-8 matrix. Finally, the structural distinction between Au25(SG)18@ZIF-8 and Au25(SG)18/ZIF-8 determines their different emission features, and provides a new strategy to adjust the optical behavior of Au25(SG)18 for applications in bioimaging and biotherapy.

Research Organization:
Sun Yat-Sen Univ., Guangzhou (China); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC); National Natural Science Foundation of China (NSFC); 973 Program (China); Natural Science Foundation (NSF) of Guangdong Province (China); Fundamental Research Funds for the Central Universities (China)
Grant/Contract Number:
AC05-00OR22725; 2014CB845600; 21643017; 21720102007; 2016A030313268; S2013030013474; 201504010031; 17lgzd18
OSTI ID:
1422599
Journal Information:
Advanced Materials, Vol. 30, Issue 6; ISSN 0935-9648
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 92 works
Citation information provided by
Web of Science

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Cited By (14)

Heterostructures of MOFs and Nanorods for Multimodal Imaging journal October 2018
ZD2-Engineered Gold Nanostar@Metal-Organic Framework Nanoprobes for T 1 -Weighted Magnetic Resonance Imaging and Photothermal Therapy Specifically Toward Triple-Negative Breast Cancer journal October 2018
Miscible‐Solvent‐Assisted Two‐Phase Synthesis of Monolayer‐Ligand‐Protected Metal Nanoclusters with Various Sizes journal January 2020
Hollow Au-ZnO/CN Nanocages Derived from ZIF-8 for Efficient Visible-Light-Driven Hydrogen Evolution from Formaldehyde Alkaline Solution: Hollow Au-ZnO/CN Nanocages Derived from ZIF-8 for Efficient Visible-Light-Driven Hydrogen Evolution from Formaldehyde Alkaline Solution journal June 2019
Evaluation of the BET Theory for the Characterization of Meso and Microporous MOFs journal August 2018
Facile Hydrophobication of Glutathione-Protected Gold Nanoclusters and Encapsulation into Poly(lactide-co-glycolide) Nanocarriers journal July 2019
Au 25 (SR) 18 : the captain of the great nanocluster ship journal January 2018
Rational encapsulation of atomically precise nanoclusters into metal–organic frameworks by electrostatic attraction for CO 2 conversion journal January 2018
A dual-zwitterion functionalized ultra-hydrophilic metal–organic framework with ingenious synergy for enhanced enrichment of glycopeptides journal January 2019
A robust photocatalyst of Au 25 @ZIF-8@TiO 2 -ReP with dual photoreductive sites to promote photoelectron utilization in H 2 O splitting to H 2 and CO 2 reduction to CO journal January 2019
A liquid metal composite by ZIF-8 encapsulation journal January 2020
Activation of atom-precise clusters for catalysis journal January 2020
A Cu-Doped ZIF-8 metal organic framework as a heterogeneous solid catalyst for aerobic oxidation of benzylic hydrocarbons journal January 2019
pH-Responsive metal–organic framework encapsulated gold nanoclusters with modulated release to enhance photodynamic therapy/chemotherapy in breast cancer journal January 2020

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Related Subjects

36 MATERIALS SCIENCE
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
4-NP reduction
Au25(SG)18 nanocluster
fluorescence
nanocomposites
ZIF-8