title: Molecular sensitivity of DNA-Ag-PATP hybrid on optical activity for ultratrace mercury analysis.
abstract: The para-aminothiophenol (PATP), in which the thiol groups adsorbed on the Ag surface and the amino groups coordinated with Hg(2+), can mediate the aggregation of sunlight-reduced λ-DNA-templated Ag nanoparticles, resulting in high molecular sensitivity of this hybrid on optical activity. Sub-pM levels of Hg(2+) assays were achieved based on this molecular stepwise assembly.
authors.affiliation: Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei 230031, China.
authors.forename: Honglin
authors.initials: H
authors.lastname: Liu
authors.forename: Liangbao
authors.initials: L
authors.lastname: Yang
authors.forename: Hongwei
authors.initials: H
authors.lastname: Ma
authors.forename: Zhimei
authors.initials: Z
authors.lastname: Qi
authors.forename: Jinhuai
authors.initials: J
authors.lastname: Liu
mesh_terms: D002942:Circular Dichroism / Q000379:methods*; D004247:DNA / Q000737:chemistry*; D008628:Mercury / Q000032:analysis*; D053768:Metal Nanoparticles / Q000737:chemistry; D010636:Phenols / Q000737:chemistry*; D012834:Silver / Q000737:chemistry*; D013438:Sulfhydryl Compounds / Q000737:chemistry*
chemical_list: D010636:Phenols; D013438:Sulfhydryl Compounds; D012834:Silver; C042983:thiophenol; D004247:DNA; D008628:Mercury