Nano-Brass: Bimetallic Copper/Zinc Colloids by a Nonaqueous Organometallic Route Using [Cu(OCH(Me)CH2NMe2)2] and Et 2Zn as Precursors

Julia Hambrock; Marie K. Schröter; Alexander Birkner; Christoph Wöll; Roland A. Fischer

doi:10.1021/cm0341383

Nano-Brass: Bimetallic Copper/Zinc Colloids by a Nonaqueous Organometallic Route Using [Cu(OCH(Me)CH₂NMe₂)₂] and Et ₂Zn as Precursors

Julia Hambrock, Marie K. Schröter, Alexander Birkner, Christoph Wöll, Roland A. Fischer

Max-Planck-lnstitut für Kohlenforschung

Research output: Contribution to journal › Article › peer-review

54 Scopus citations

Abstract

We present a synthetic approach toward alloyed Cu/Zn nanoparticles using [Cu(OCH-(Me)CH₂NMe₂)₂] and Et₂Zn as precursors. The thermolysis in the hot coordinating solvent hexadecylamine, HDA, leads to the formation of nanoscale, colloidal Cu/Zn systems with zinc contents (by EDX) of 5, 30, and 65%, respectively. All systems have been analyzed using UV/Vis spectroscopy, transmission electron microscopy, EDX, and selected area electron diffraction (SAED). These analytical data suggest that alloying between zinc and copper takes place, revealing crystalline phases of CuZn and CUZn₂ besides Cu as components of the particles in the case of higher zinc concentrations. The characteristic surface plasmon resonance (UV) for pure HDA-capped copper colloids at 558 nm, still observed for copper-rich alloy particles, disappears for zinc-rich particles.

Original language	English
Pages (from-to)	4217-4222
Number of pages	6
Journal	Chemistry of Materials
Volume	15
Issue number	22
DOIs	https://doi.org/10.1021/cm0341383
State	Published - 4 Nov 2003
Externally published	Yes

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title = "Nano-Brass: Bimetallic Copper/Zinc Colloids by a Nonaqueous Organometallic Route Using [Cu(OCH(Me)CH2NMe2)2] and Et 2Zn as Precursors",

abstract = "We present a synthetic approach toward alloyed Cu/Zn nanoparticles using [Cu(OCH-(Me)CH2NMe2)2] and Et2Zn as precursors. The thermolysis in the hot coordinating solvent hexadecylamine, HDA, leads to the formation of nanoscale, colloidal Cu/Zn systems with zinc contents (by EDX) of 5, 30, and 65%, respectively. All systems have been analyzed using UV/Vis spectroscopy, transmission electron microscopy, EDX, and selected area electron diffraction (SAED). These analytical data suggest that alloying between zinc and copper takes place, revealing crystalline phases of CuZn and CUZn2 besides Cu as components of the particles in the case of higher zinc concentrations. The characteristic surface plasmon resonance (UV) for pure HDA-capped copper colloids at 558 nm, still observed for copper-rich alloy particles, disappears for zinc-rich particles.",

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T2 - Bimetallic Copper/Zinc Colloids by a Nonaqueous Organometallic Route Using [Cu(OCH(Me)CH2NMe2)2] and Et 2Zn as Precursors

AU - Hambrock, Julia

AU - Schröter, Marie K.

AU - Birkner, Alexander

AU - Wöll, Christoph

AU - Fischer, Roland A.

PY - 2003/11/4

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N2 - We present a synthetic approach toward alloyed Cu/Zn nanoparticles using [Cu(OCH-(Me)CH2NMe2)2] and Et2Zn as precursors. The thermolysis in the hot coordinating solvent hexadecylamine, HDA, leads to the formation of nanoscale, colloidal Cu/Zn systems with zinc contents (by EDX) of 5, 30, and 65%, respectively. All systems have been analyzed using UV/Vis spectroscopy, transmission electron microscopy, EDX, and selected area electron diffraction (SAED). These analytical data suggest that alloying between zinc and copper takes place, revealing crystalline phases of CuZn and CUZn2 besides Cu as components of the particles in the case of higher zinc concentrations. The characteristic surface plasmon resonance (UV) for pure HDA-capped copper colloids at 558 nm, still observed for copper-rich alloy particles, disappears for zinc-rich particles.

AB - We present a synthetic approach toward alloyed Cu/Zn nanoparticles using [Cu(OCH-(Me)CH2NMe2)2] and Et2Zn as precursors. The thermolysis in the hot coordinating solvent hexadecylamine, HDA, leads to the formation of nanoscale, colloidal Cu/Zn systems with zinc contents (by EDX) of 5, 30, and 65%, respectively. All systems have been analyzed using UV/Vis spectroscopy, transmission electron microscopy, EDX, and selected area electron diffraction (SAED). These analytical data suggest that alloying between zinc and copper takes place, revealing crystalline phases of CuZn and CUZn2 besides Cu as components of the particles in the case of higher zinc concentrations. The characteristic surface plasmon resonance (UV) for pure HDA-capped copper colloids at 558 nm, still observed for copper-rich alloy particles, disappears for zinc-rich particles.

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Nano-Brass: Bimetallic Copper/Zinc Colloids by a Nonaqueous Organometallic Route Using [Cu(OCH(Me)CH₂NMe₂)₂] and Et ₂Zn as Precursors

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