title: Silver atom and strand numbers in fluorescent and dark Ag:DNAs.
abstract: We use tandem HPLC-mass spectrometry with in-line spectroscopy to identify silver atom numbers, N(Ag), of 10 to 21 in visible- to infrared-emitting Ag:DNA complexes stabilized by oligonucleotide monomers and dimers. Qualitatively different absorbance spectra from bare, same-N(Ag) silver clusters point to silver-base interactions as the origin for the color of Ag:DNAs.
authors.affiliation: Chemistry Department, UCSB, Santa Barbara, CA 93117, USA.
authors.forename: Danielle
authors.initials: D
authors.lastname: Schultz
authors.forename: Elisabeth G
authors.initials: EG
authors.lastname: Gwinn
mesh_terms: D002851:Chromatography, High Pressure Liquid; D056831:Coordination Complexes / Q000737:chemistry*; D004247:DNA / Q000737:chemistry*; D009841:Oligonucleotides / Q000737:chemistry; D012834:Silver / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D053719:Tandem Mass Spectrometry
chemical_list: D056831:Coordination Complexes; D009841:Oligonucleotides; D012834:Silver; D004247:DNA