title: Hybridization of oligonucleotide-modified silver and gold nanoparticles in aqueous dispersions and on gold films.
abstract: Functionalization of silver and gold nanoparticles by 12mer-thiolated homo-oligonucleotides, SA and ST (containing only adenine or thymine, respectively), and their hybridization and dehybridization in aqueous dispersions have been described. In addition, ST and SA were self-assembled onto gold films and hybridized with their complementary pairs, unlabeled or labeled by gold and silver nanoparticles. The base pairing between DNA strands and the types of oligonucleotides (adenine or thymine) attached to the nanoparticles was detected by Polarization Modulated Fourier Transform Infrared Reflection Absorption Spectroscopy (PM-FTIRRAS).
authors.affiliation: Department of Chemistry and Center for Advanced Materials Processing, Clarkson University, Potsdam, New York 13699, USA.
authors.forename: Iryna
authors.initials: I
authors.lastname: Tokareva
authors.forename: Eliza
authors.initials: E
authors.lastname: Hutter
mesh_terms: D000225:Adenine / Q000737:chemistry; D004247:DNA / Q000737:chemistry; D006046:Gold / Q000737:chemistry*; D046529:Microscopy, Electron, Transmission; D049329:Nanostructures / Q000737:chemistry*; D009693:Nucleic Acid Hybridization / Q000379:methods*; D009841:Oligonucleotides / Q000737:chemistry*; D012834:Silver / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared / Q000379:methods*; D013438:Sulfhydryl Compounds / Q000737:chemistry; D013941:Thymine / Q000737:chemistry
chemical_list: D009841:Oligonucleotides; D013438:Sulfhydryl Compounds; D012834:Silver; D006046:Gold; D004247:DNA; D000225:Adenine; D013941:Thymine