Author/Authors :
Lanlan Sun، نويسنده , , GAng WEI M.E، نويسنده , , Yonghai Song ، نويسنده , , Zhiguo Liu، نويسنده , , Li Wang، نويسنده , , Zhuang Li *، نويسنده ,
Abstract :
Silver nanoparticles ring was successfully fabricated by electrostatic assembling 4-aminothiophenol (4-ATP) capped silver
nanoparticles on predefined extended circular plasmid pBR322 DNA. The silver nanoparticles ring which was about 1.5 mm in
length, and about 2.2 nm in height can be obtained by adjusting the reaction time. The normal Raman scattering spectra reveal
that the 4-ATP has contacted with the silver nanoparticles by forming a strong Ag–S bond. The AFM data show that the assembly
of 4-ATP capped silver nanoparticles on DNA is ordered.
Keywords :
DNA , Nanoparticle , Electrostatic , Ring
