Colorimetric protein sensing using catalytically amplified sensor arrays.

ABSTRACT: Catalytically active iron oxide nanoparticles are used as recognition elements and signal amplifiers for the array-based colorimetric sensing of proteins. Interactions between cationic monolayers on the Fe(3) O(4) NPs and analyte proteins differentially modulates the peroxidase-like activity of Fe(3) O(4) NPs, affording catalytically amplified colorimetric signal patterns that enable the detection and identification of proteins at 50 nM.

SUBMITTER: Li X 

PROVIDER: S-EPMC3514658 | biostudies-literature | 2012 Dec

REPOSITORIES: biostudies-literature