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Vykoukal V, Halasta V, Babiak M, Bursik J, Pinkas J. Morphology Control in AgCu Nanoalloy Synthesis by Molecular Cu(I) Precursors. Inorg Chem 2019; 58:15246-15254. [PMID: 31651156 DOI: 10.1021/acs.inorgchem.9b02172] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
As nanoparticle preparation methods employing bottom-up procedures rely on the use of molecular precursors, the chemical composition and bonding of these precursors have a decisive effect on nanoparticle formation and their resulting morphology and properties. We synthesized the Cu(I) complexes [Cu(PPh3)2(bea)] (1, bea = benzoate) and [Cu(PPh3)3(Hphta)] (2, phta = phthalate) by reducing the corresponding Cu(II) mono- and dicarboxylates with triphenylphosphine. We characterized 1 and 2 by single-crystal X-ray diffraction analysis, elemental analyses, infrared and nuclear magnetic resonance spectroscopy, and mass spectrometry and obtained complete information about their structures in the solid state and in solution. Also, we examined their thermal stability in oleylamine and determined their decomposition temperatures to be used as the minimal reaction temperature in metal nanoparticle synthesis. The complexes 1 and 2 differ in the number of reducing PPh3 ligands and the strength of carboxylate bonding to the Cu(I) center. Therefore, we employed them in combination with [Ag(NH2C12H25)2]NO3 as molecular precursors in the solvothermal hot injection synthesis of AgCu nanoalloys in oleylamine and demonstrated their influence on the elemental distribution, phase composition, particle size distribution, shape, morphology, and optical properties of the resulting nanoparticles. The nanoalloy particles from the benzoate complex 1 were oblate and polydisperse and exhibited two surface plasmons at 393 and 569 nm, which is caused by their Janus-type structure. The nanoparticles prepared from the phthalate complex 2 were round and monodisperse and exhibited one plasmon at 413 nm, as they formed an AgCu solid solution with a random distribution of the elements in a particle.
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Affiliation(s)
- Vit Vykoukal
- Masaryk University , Faculty of Science, Department of Chemistry , Kotlarska 2 , 611 37 Brno , Czech Republic.,Masaryk University , CEITEC MU , Kamenice 5 , 625 00 Brno , Czech Republic
| | - Vitezslav Halasta
- Masaryk University , Faculty of Science, Department of Chemistry , Kotlarska 2 , 611 37 Brno , Czech Republic
| | - Michal Babiak
- Masaryk University , Faculty of Science, Department of Chemistry , Kotlarska 2 , 611 37 Brno , Czech Republic.,Masaryk University , CEITEC MU , Kamenice 5 , 625 00 Brno , Czech Republic
| | - Jiri Bursik
- Institute of Physics of Materials , ASCR , Zizkova 22 , 616 62 Brno , Czech Republic
| | - Jiri Pinkas
- Masaryk University , Faculty of Science, Department of Chemistry , Kotlarska 2 , 611 37 Brno , Czech Republic.,Masaryk University , CEITEC MU , Kamenice 5 , 625 00 Brno , Czech Republic
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Song J, Li H, Li J, Wang S, Zhou S. Fabrication and optical properties of metastable Cu-Ag alloys. APPLIED OPTICS 2002; 41:5413-5416. [PMID: 12211572 DOI: 10.1364/ao.41.005413] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
A series of single-phase metastable Cu-Ag solid solutions was deposited by magnetron sputtering at liquid-nitrogen temperature. The lattice constant increases with increasing Ag content. The spectroscopic ellipsometer measurements clearly show that with increasing Ag content, the Cu-like and Ag-like absorption edges in the visible wavelength range shift continuously toward the high-energy and the low-energy sides, respectively.
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Affiliation(s)
- Jintao Song
- Library of Fudan University, Shanghai, China
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Vardeman CF, Gezelter JD. Comparing Models for Diffusion in Supercooled Liquids: The Eutectic Composition of the Ag−Cu Alloy. J Phys Chem A 2001. [DOI: 10.1021/jp0035784] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Charles F. Vardeman
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556
| | - J. Daniel Gezelter
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556
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