Colorimetric chemodosimeter based on diazonium-gold-nanoparticle complexes for sulfite ion detection in solution

• Main Authors: Du, Jianjun, Shao, Qi, Yin, Shengyan, Jiang, Lin, Ma, Jan, Chen, Xiaodong
• Other Authors: School of Materials Science & Engineering
• Format: Article
• Language: English
• Published: 2013
• Online Access: https://hdl.handle.net/10356/97280; http://hdl.handle.net/10220/10401
• Institution: Nanyang Technological University

A fast and simple colorimetric detection system for sulfite, based on diazonium–gold-nanoparticle(AuNP) complexation, has high selectivity and sensitivity in aqueous media. The positively charged diazonium has affinity for the AuNP surface due to an electrostatic effect, which prevents AuNPs from ag...