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@article{1606437,
author = {Vykoukal, Vít and Halasta, Vitezslav and Babiak, Michal and Buršík, Jiří and Pinkas, Jiří},
article_location = {Washington},
article_number = {22},
doi = {http://dx.doi.org/10.1021/acs.inorgchem.9b02172},
keywords = {AgCu; Nanoalloy; Synthesis; Precursor; Nanoparticles},
language = {eng},
issn = {0020-1669},
journal = {Inorganic Chemistry},
title = {Morphology Control in AgCu Nanoalloy Synthesis by Molecular Cu(I) Precursors},
url = {https://pubs.acs.org/doi/10.1021/acs.inorgchem.9b02172},
volume = {58},
year = {2019}
}
TY - JOUR
ID - 1606437
AU - Vykoukal, Vít - Halasta, Vitezslav - Babiak, Michal - Buršík, Jiří - Pinkas, Jiří
PY - 2019
TI - Morphology Control in AgCu Nanoalloy Synthesis by Molecular Cu(I) Precursors
JF - Inorganic Chemistry
VL - 58
IS - 22
SP - 15246-15254
EP - 15246-15254
PB - American Chemical Society
SN - 00201669
KW - AgCu
KW - Nanoalloy
KW - Synthesis
KW - Precursor
KW - Nanoparticles
UR - https://pubs.acs.org/doi/10.1021/acs.inorgchem.9b02172
L2 - https://pubs.acs.org/doi/10.1021/acs.inorgchem.9b02172
N2 - 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 PPh 3 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.
ER -
VYKOUKAL, Vít, Vitezslav HALASTA, Michal BABIAK, Jiří BURŠÍK and Jiří PINKAS. Morphology Control in AgCu Nanoalloy Synthesis by Molecular Cu(I) Precursors. \textit{Inorganic Chemistry}. Washington: American Chemical Society, 2019, vol.~58, No~22, p.~15246-15254. ISSN~0020-1669. Available from: https://dx.doi.org/10.1021/acs.inorgchem.9b02172.
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