title: Synthesis of Ag(2) S-Ag nanoprisms and their use as DNA hybridization probes.
abstract: A simple synthetic route to prepare Ag(2) S-Ag nanoprisms consists of the facile addition of Na(2) S to a solution of triangular Ag nanoprisms. The resulting Ag(2) S-Ag nanoparticles are more stable in solution than the original Ag nanoprisms, and two surface plasmon resonance (SPR) bands of the original Ag nanoprisms still remain. In addition, the SPR bands of the Ag(2) S-Ag nanoprisms are tunable over a wide range. The Ag(2) S-Ag nanoprisms can be directly bioconjugated via well-established stable Ag(2) S surface chemistry with readily available sulfur coupling agents. The nanoprisms are used in the hybridization of functionalized oligonucleotides, and show promise as probes for future biosensing applications.
authors.affiliation: Department of Chemistry, Capital Normal University, Beijing 100048, China.
authors.forename: Bing
authors.initials: B
authors.lastname: Liu
authors.forename: Zhanfang
authors.initials: Z
authors.lastname: Ma
mesh_terms: D015342:DNA Probes / Q000737:chemistry*; D004583:Electrons; D007700:Kinetics; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D009693:Nucleic Acid Hybridization / Q000379:methods*; D056951:Photoelectron Spectroscopy; D012834:Silver / Q000737:chemistry*; D018030:Silver Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D013056:Spectrophotometry, Ultraviolet; D013440:Sulfides / Q000737:chemistry
chemical_list: D015342:DNA Probes; D018030:Silver Compounds; D013440:Sulfides; D012834:Silver; C013251:silver sulfide; C033479:sodium sulfide