Near-infrared luminescence from small gold nanocrystals

Article Abstract:

A novel photoluminescence is reported for small metal nanocrystals in the near-infrared region (1.1-1.6 Mum) where near-infrared photoluminescence spectra were measured at room temperature for 1.1 and 1.7 nm Au nanocrystals using a 1.06 Mum excitation source. This photoluminescence is attributed to sp to sp-like transitions, analogous to intraband transitions in bulk gold, however, the exact mechanism is unknown.

Nanotechnology, Luminescence, Properties

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CeO2 nanorods and gold nanocrystals supported in CeO2 nanorods as catalyst

Article Abstract:

Large-scale well-crystallized CeO2 nanorods with uniform diameters in the range of 20-30 nm and lengths up to tens of micrometers are first synthesized through a hydrothermal route in 5 M KOH solution at 180 degree Celcius for 45 h without any templates and surfactants. The synthesized Au/CeO2 nanorods demonstrate a higher catalytic activity in CO oxidation than the pure CeO2 nanorods.

Cerium & Compounds, Oxidation-reduction reaction, Oxidation-reduction reactions, Cerium, Atomic properties, Nanoparticles

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DNA-controlled assembly of protein-modified gold nanocrystals

Article Abstract:

The study is done on the controlled assembly in solution of gold nanocrystals modified by attachment of complimentary protein-DNA conjugates. The study reveals that the rate of formation of the resulting aggregates can be controlled by varying the salt and modified nanocrystal concentrations.

Biological Product (except Diagnostic) Manufacturing, Drugs, Deoxyribonucleic Acid, Analysis, DNA, Chemistry, Physical and theoretical, Physical chemistry

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