Chemical sensors from nanoparticle/dendrimer composite...

G - Physics – 01 – N

Patent

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Details

G01N 33/00 (2006.01) G01N 21/77 (2006.01) G01N 27/12 (2006.01) G01N 31/22 (2006.01) G01N 33/483 (2006.01)

Patent

CA 2393739

The invention relates to a chemical sensor comprising a sensor film formed of a nanoparticle network in which the nanoparticles are interlinked by functionalized dendrimer molecules. The dendrimers support an efficient uptake of analyte molecules by the film material and therefore enable a high sensitivity of the sensor. In addition, the chemical nature of the dendrimers strongly determines the chemical selectivity of the sensor device. By cross-linking the components of the sensitive material the sensor displays a good mechanical stability.

L'invention porte sur un détecteur chimique comportant un film sensible constitué d'un réseau de nanoparticules dans lequel les nanoparticules sont interreliées par des molécules de dendrimère fonctionnalisées. Les dendrimères favorisent la prise en charge efficace de molécules d'analyte par le matériau du film, ce qui augmente la sensibilité du détecteur. En outre, la nature chimique des dendrimères détermine fortement la sélectivité chimique du dispositif détecteur. Grâce à la réticulation des éléments du matériau sensible, le détecteur affiche une bonne stabilité mécanique.

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