Functional gold-nanoparticles based colorimetric assay for medical and industrial use

  • Shinya Ikeno Department of Biological Functions Engineering, Kyushu Institute of Technology, Kitakyushu Science and Research Park, Kitakyushu, Fukuoka, 808-0196, Japan
Keywords: Pesticide, Biomarker, Cholinesterase, Fish, Review


Nanosize materials have been widely available in various research fields as an advanced technology. Gold nanoparticles (GNPs) have unique optical, electrical, and magnetic properties. Especially, the optical spectrum of GNPs shows a localized surface plasmon band in the region of 520–550 nm. Te wavelength of spectrum of GNPs change drastically longer when several particles come close to each other. Various types of GNP based assays that was conjugated with functional biomolecules have been developed to take advantage of the optical property. Tis review introduces the optical assays using GNPs conjugated with biomolecules for medical and industrial use.