title: RETRACTED: RNA-mediated metal-metal bond formation in the synthesis of hexagonal palladium nanoparticles.
abstract: RNA sequences have been discovered that mediate the growth of hexagonal palladium nanoparticles. In vitro selection techniques were used to evolve an initial library of approximately 10(14) unique RNA sequences through eight cycles of selection to yield several active sequence families. Of the five families, all representative members could form crystalline hexagonal palladium platelets. The palladium particle growth occurred in aqueous solution at ambient temperature, without any endogenous reducing agent, and at low concentrations of metal precursor (100 micromolar). Relative to metal precursor, the RNA concentration was significantly lower (1 micromolar), yet micrometer-size crystalline hexagonal palladium particles were formed rapidly (7.5 to 1 minutes).
authors.affiliation: Department of Chemistry, North Carolina State University, Raleigh, NC 27695, USA.
authors.forename: Lina A
authors.initials: LA
authors.lastname: Gugliotti
authors.forename: Daniel L
authors.initials: DL
authors.lastname: Feldheim
authors.forename: Bruce E
authors.initials: BE
authors.lastname: Eaton
mesh_terms: D001483:Base Sequence; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D003460:Crystallization; D018076:DNA, Complementary; D012321:DNA-Directed RNA Polymerases / Q000378:metabolism; D043942:Nanotubes; D010165:Palladium / Q000737:chemistry*; D010316:Particle Size; D016133:Polymerase Chain Reaction; D012313:RNA / Q000737:chemistry*; D013696:Temperature; D014158:Transcription, Genetic; D014764:Viral Proteins
chemical_list: D018076:DNA, Complementary; D014764:Viral Proteins; D010165:Palladium; D012313:RNA; C062210:bacteriophage T7 RNA polymerase; D012321:DNA-Directed RNA Polymerases