Colorimetric copper(II) ion sensor based on the conformational change of peptide immobilized onto the surface of gold nanoparticles

@article{Chen2014ColorimetricCI,
  title={Colorimetric copper(II) ion sensor based on the conformational change of peptide immobilized onto the surface of gold nanoparticles},
  author={Hongxia Chen and Jiangjiang Zhang and Xinjian Liu and Yanmin Gao and Zonghuang Ye and Genxi Li},
  journal={Analytical Methods},
  year={2014},
  volume={6},
  pages={2580-2585}
}
Detection of heavy metal ions has attracted great attention, and the colorimetric assay has remarkable advantages, such as convenient, efficient, free-equipment and always visible. Herein, we report a highly sensitive and selective colorimetric sensor for the determination of copper(II) ions based on the conformational change of Cu2+-binding peptides immobilized onto the surface of gold nanoparticles. In the presence of copper(II) ions, the peptides modified gold nanoparticles (p-AuNPs) will… Expand
A sensitive plasmonic copper(II) sensor based on gold nanoparticles deposited on ITO glass substrate.
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