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Colorimetric Response of Peptide‐Functionalized Gold Nanoparticles to Metal Ions
Author(s) -
Slocik Joseph M.,
Zabinski Jeffrey S.,
Phillips David M.,
Naik Rajesh R.
Publication year - 2008
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.200700920
Subject(s) - metal ions in aqueous solution , detection limit , metal , nanoparticle , colloidal gold , peptide , colorimetry , ion , materials science , nanotechnology , ligand (biochemistry) , combinatorial chemistry , chemistry , chromatography , organic chemistry , biochemistry , receptor , metallurgy
Nano‐metal detectors! A rapid colorimetric response and detection limit in the nanomolar concentration range is achieved by a colorimetric sensor for metal ions. The sensor is made of gold nanoparticles functionalized with a simple peptide ligand (PFNs). The interaction of the PFNs with metal ions results in a distinct colorimetric response that is driven by nanoparticles aggregation (see figure).