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

Du, Jianjun; Shao, Qi; Yin, Shengyan; Jiang, Lin; Ma, Jan; Chen, Xiaodong (2012)

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 ...

Flexible colorimetric detection of mercuric ion by simply mixing nanoparticles and oligopeptides

Du, Jianjun; Sun, Yinghui; Jiang, Lin; Cao, Xuebo; Qi, Dianpeng; Yin, Shengyan; Ma, Jan; Boey, Freddy Yin Chiang; Chen, Xiaodong (2011)

A colorimetric detection system for Hg2+ in aqueous media is developed with high selectivity and sensitivity based on the mixing of gold nanoparticles and oligopeptides. Oligopeptides with cysteine (Cys) at both ends ...