Novel core etching technique on synthesized gold nanoparticles for colorimetric detection of dopamine biosample

@article{Lee2012NovelCE,
  title={Novel core etching technique on synthesized gold nanoparticles for colorimetric detection of dopamine biosample},
  author={Ho-Cheng Lee and Tzu-Heng Chen and Wei-Lung Tseng and Che-Hsin Lin},
  journal={2012 7th IEEE International Conference on Nano/Micro Engineered and Molecular Systems (NEMS)},
  year={2012},
  pages={665-668}
}
This study develops a novel and high performance colorimetric probe for dopamine (DA) detection. Aqueous-phase gold nanoparticles (AuNPs) extracted with 4-(dimethylamino) pyridine (DMAP) from toluene solvent is used as the reaction probes. The conjugated AuNPs of the diameter around 13 nm disperse into the size of 2-5 nm while adding dopamine (DA), resulting in the color change of the AuNPs solution from red to green. Therefore, the extracted AuNP solution can be a good indicator for detecting… CONTINUE READING