Phosphine-free synthesis of CdSe nanocrystals

Article Abstract:

High quality CdSe nanocrystals are prepared using elemental non-organometallic phosphine-free selenium as the chalcogenide precursor dispersed in 1-octadecene (ODE). The simple nanocrystal synthetic route demonstrates that tri-n-octylphosphine (TOP) influences the kinetics of CdSe formation and in the absence of a selenium passivant, the crystal structure of CdSe nanocrystals could be altered from zinc blende to wurtzite by the addition of bis(2,2,4-trimethylpentyl)phosphinic acid (TMPPA).

X-rays, X-ray diffraction, Nucleation, Nucleation (Chemistry), Properties

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Dipole-dipole plasmon interactions in gold-on-polystyrene composites

Article Abstract:

A demonstration on the way spectra of n gold nanoparticles could be systematically be morphed from that of isolated gold particles, through the regime of broad adsorption dominated by particle-particle interactions and finally to the limiting case of a continuous nanoshell was conducted. The experimental data were produced using the process of deposition-precipitation that provides a facile method to decorate polystyrene microspheres with gold nanoparticles.

Plastics Material and Resin Manufacturing, Plastics materials and resins, Polystyrene, Styrene Resins, Polystyrene Resins NEC, Gold Compounds, Plasmons (Physics), Chemical properties, Atomic properties, Magnetic dipoles, Dipoles (Electromagnetism)

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One-step synthesis and structural features of CdS/montomorillonite nanocomposites

Article Abstract:

A novel synthesis method is introduced for the nanocomposites of cadmium sulfide and montmorillonite. This method features the combination of an ion exchange process and an in situ hydrothermal decomposition process of complex precursor, which is simple in contrast to the conventional synthesis methods that comprise two separate steps for similar nanocomposite materials.

Observations, Spectra, Dehydrogenation, Chemical synthesis

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