title: Oxidation-triggered aggregation of gold nanoparticles for naked-eye detection of hydrogen peroxide.
abstract: Naked-eye detection of H2O2 was realized based on the color change of gold nanoparticles upon aggregation. The removal of polyethylene glycol chains from the nanoparticle surface under H2O2 treatment let to the exposure of inner hydrophobic ligands, causing the nanoparticle aggregation in aqueous medium. This detection system shows a wide dynamic range in the μM scale and a distinguishable limit of 10 μM.
authors.affiliation: Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore. zhaoyanli@ntu.edu.sg.
authors.forename: Shaojue
authors.initials: S
authors.lastname: Wu
authors.forename: Si Yu
authors.initials: SY
authors.lastname: Tan
authors.forename: Chung Yen
authors.initials: CY
authors.lastname: Ang
authors.forename: Zhong
authors.initials: Z
authors.lastname: Luo
authors.forename: Yanli
authors.initials: Y
authors.lastname: Zhao
mesh_terms: D006046:Gold / Q000737:chemistry*; D006861:Hydrogen Peroxide / Q000032:analysis*; D053768:Metal Nanoparticles / Q000737:chemistry*; D046529:Microscopy, Electron, Transmission; D010084:Oxidation-Reduction; D066244:Proton Magnetic Resonance Spectroscopy
chemical_list: D006046:Gold; D006861:Hydrogen Peroxide