Fabrication of Au25(SG)18–ZIF-8 Nanocomposites: A Facile Strategy to Position Au25(SG)18 Nanoclusters Inside and Outside ZIF-8
Abstract
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.
- Authors:
-
- Sun Yat-Sen Univ., Guangzhou (China). School of Chemistry. Key Lab. of Environment and Energy Chemistry of Guangdong Higher Education Inst.
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences. Chemical Science Division
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences. Materials Science and Technology Division
- Sun Yat-Sen Univ., Guangzhou (China). Instrumental Analysis and Research Centre
- Publication Date:
- Research Org.:
- Sun Yat-Sen Univ., Guangzhou (China); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- 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)
- OSTI Identifier:
- 1422599
- Grant/Contract Number:
- AC05-00OR22725; 2014CB845600; 21643017; 21720102007; 2016A030313268; S2013030013474; 201504010031; 17lgzd18
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Advanced Materials
- Additional Journal Information:
- Journal Volume: 30; Journal Issue: 6; Journal ID: ISSN 0935-9648
- Publisher:
- Wiley
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 4-NP reduction; Au25(SG)18 nanocluster; fluorescence; nanocomposites; ZIF-8
Citation Formats
Luo, Yucheng, Fan, Shiyan, Yu, Wenqian, Wu, Zili, Cullen, David A., Liang, Chaolun, Shi, Jianying, and Su, Chengyong. Fabrication of Au25(SG)18–ZIF-8 Nanocomposites: A Facile Strategy to Position Au25(SG)18 Nanoclusters Inside and Outside ZIF-8. United States: N. p., 2017.
Web. doi:10.1002/adma.201704576.
Luo, Yucheng, Fan, Shiyan, Yu, Wenqian, Wu, Zili, Cullen, David A., Liang, Chaolun, Shi, Jianying, & Su, Chengyong. Fabrication of Au25(SG)18–ZIF-8 Nanocomposites: A Facile Strategy to Position Au25(SG)18 Nanoclusters Inside and Outside ZIF-8. United States. https://doi.org/10.1002/adma.201704576
Luo, Yucheng, Fan, Shiyan, Yu, Wenqian, Wu, Zili, Cullen, David A., Liang, Chaolun, Shi, Jianying, and Su, Chengyong. Fri .
"Fabrication of Au25(SG)18–ZIF-8 Nanocomposites: A Facile Strategy to Position Au25(SG)18 Nanoclusters Inside and Outside ZIF-8". United States. https://doi.org/10.1002/adma.201704576. https://www.osti.gov/servlets/purl/1422599.
@article{osti_1422599,
title = {Fabrication of Au25(SG)18–ZIF-8 Nanocomposites: A Facile Strategy to Position Au25(SG)18 Nanoclusters Inside and Outside ZIF-8},
author = {Luo, Yucheng and Fan, Shiyan and Yu, Wenqian and Wu, Zili and Cullen, David A. and Liang, Chaolun and Shi, Jianying and Su, Chengyong},
abstractNote = {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.},
doi = {10.1002/adma.201704576},
journal = {Advanced Materials},
number = 6,
volume = 30,
place = {United States},
year = {Fri Dec 22 00:00:00 EST 2017},
month = {Fri Dec 22 00:00:00 EST 2017}
}
Web of Science
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