The characterization of ag sols by electron microscopy, optical absorption, and electrophoresis

Heard, Susanne M.; Grieser, Franz; Barraclough, C. G.; Sanders, J. V.

doi:10.1016/0021-9797(83)90439-3

Cited by 195 publications

(129 citation statements)

References 11 publications

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“…Figure 7 reports the SEM images of samples BPM1, BPM2, BPM4, and BPM6. The former three samples present average diameters of 236, 197, and 105 nm with uniformity ratios [16] U of 1.01, 1.01, and 1.03, respectively, whereas for sample BPM6 an increase in the size distribution can be observed, although a reliable determination of the relevant U value is not possible. The decrease in the U value as the ratio MMA/PTFE increases indicates a self-sharpening propensity for these systems, as previously observed for other systems [17].…”

Section: Resultsmentioning

confidence: 89%

Preparation and Properties of PTFE-PMMA Core-Shell Nanoparticles and Nanocomposites

Antonioli

Laus

Zuccheri

et al. 2012

Journal of Nanotechnology

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The preparation of polytetrafluoroethylene-poly(methyl methacrylate) (PTFE-PMMA) core-shell particles was described, featuring controlled size and narrow size distribution over a wide compositional range, through a seeded emulsion polymerization starting from a PTFE seed of 26 nanometers. Over the entire MMA/PTFE range, the particle size increases as the MMA/PTFE ratio increases. A very precise control over the particle size can be exerted by properly adjusting the ratio between the monomer and the PTFE seed. Particles in the 80-240 nm range can be prepared with uniformity indexes suited to build 2D and 3D colloidal crystals. These core-shell particles were employed to prepare nanocomposites with different compositions, through an annealing procedure at a temperature higher than the glass transition temperature of the shell forming polymer. A perfect dispersion of the PTFE particles within the PMMA matrix was obtained and optically transparent nanocomposites were prepared containing a very high PTFE amount.

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Section: Resultsmentioning

confidence: 89%

Preparation and Properties of PTFE-PMMA Core-Shell Nanoparticles and Nanocomposites

Antonioli

Laus

Zuccheri

et al. 2012

Journal of Nanotechnology

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“…the increasing PVP-concentration, there is a blue-shift in the extinction peak of the spectra. It has been well known that the maximum extinction peak shift to longer wavelength when the particle size becomes larger [14]. With this blue-shift of peak wavelength, it can be considered that the increasing of additive amounts of PVP (PVP concentration) prevent the growth of silver nanoparticles and lead to decreasing particle size [15][16][17].…”

Section: Resultsmentioning

confidence: 99%

“…3; this result shows that the red shift of the plasmon peak corresponds to the increase of particle size of silver nanoparticles with reaction time. This was mainly due to the fact that the particles grow with the reaction time and that longer reaction time can also promote the particle aggregation to form larger particles, leading to a red shift of the extinction peak [14]. the increasing PVP-concentration, there is a blue-shift in the extinction peak of the spectra.…”

Section: Resultsmentioning

confidence: 99%

Rapid Synthesis and Characterization of Polyvinylpyrrolidone-Protected Silver Nanoparticles by Heating Method

Usman

Mihata

Kurawaki

2015

e-J. Surf. Sci. Nanotech.

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Silver nanoparticles were successfully synthesized by heating mixed solutions of silver nitrate, hexamethylenetetramine (HMTA), and polyvinylpyrrolidone (PVP) at 80• C for 7 min. The characterization of as-prepared silver nanoparticles were carried out by measuring ultraviolet-visible (UV-vis) and FTIR spectra, and images of transmission electron microscopy (TEM). The results of extinction spectra and TEM images indicated that the higher concentration of PVP and higher MW of PVP decrease the particle size of silver nanoparticles produced in the present systems. In addition, the interaction between silver atoms and oxygen atoms in the carbonyl group of PVP was also discussed by FTIR spectroscopy. It can be concluded that this heating method at 80• C is very useful for the preparation of stable and homogeneous silver nanoparticles in the present systems.

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“…In general, even in the presence of stabilizers, the majority of the wet chemical procedures described so far yield stable dispersions of metallic NPs only at low concentrations of metal, in the range of 10 -4 -10 -2 mol/l [53,119,121,[126][127][128][129][130][131][132][133][134][135] and, therefore, are not suitable for large-scale manufacture of conductive inks, which require high metal loadings (usually 20-80 %) [1]. There are only a few reports on the direct preparation of concentrated dispersions of metal NPs.…”

Section: Metal Nps Applicable To Inkjet Ink Formulationsmentioning

confidence: 99%

Metal-based Inkjet Inks for Printed Electronics

Kamyshny¹,

Steinke²,

Magdassi

2011

TOAPJ

357

235

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Abstract:A review on applications of metal-based inkjet inks for printed electronics with a particular focus on inks containing metal nanoparticles, complexes and metallo-organic compounds. The review describes the preparation of such inks and obtaining conductive patterns by using various sintering methods: thermal, photonic, microwave, plasma, electrical, and chemically triggered. Various applications of metal-based inkjet inks (metallization of solar cell, RFID antennas, OLEDs, thin film transistors, electroluminescence devices) are reviewed.

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The characterization of ag sols by electron microscopy, optical absorption, and electrophoresis

Cited by 195 publications

References 11 publications

Preparation and Properties of PTFE-PMMA Core-Shell Nanoparticles and Nanocomposites

Preparation and Properties of PTFE-PMMA Core-Shell Nanoparticles and Nanocomposites

Rapid Synthesis and Characterization of Polyvinylpyrrolidone-Protected Silver Nanoparticles by Heating Method

Metal-based Inkjet Inks for Printed Electronics

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