title: Synthesis and characterization of silver nanoparticle composite with poly(p-Br-phenylsilane).
abstract: The one-pot synthesis and characterization of silver nanoparticle-poly(p-Br-phenylsilane) composites have been carried out. The conversion of silver(+1) salt to stable silver(0) nanoparticles is promoted by poly(p-Br-phenylsilane), Br-PPS possessing both possible reactive Si-H bonds in the polymer backbone and C-Br bonds in the substituents. The composites were characterized using XRD, TEM, FE-SEM, and solid-state UV-vis analytical techniques. TEM and FE-SEM data show the formation of the composites where large number of silver nanoparticles (less than 30 nm of size) are well dispersed throughout the Br-PPS matrix. XRD patterns are consistent with that for fcc-typed silver. The elemental analysis for Br atom and the polymer solubility confirm that the cleavage of C-Br bond and the Si-Br dative bonding were not occurred appreciably at ambient temperature. Nonetheless, TGA data suggest that some sort of cross-linking was occurred at high temperature. The size and processability of such nanoparticles depend on the ratio of metal to Br-PPS. In the absence of Br-PPS, most of the silver particles undergo macroscopic aggregation, which indicates that the polysilane is necessary for stabilizing the silver nanoparticles.
authors.affiliation: Alan G. MacDiarmid Energy Research Institute (AMERI) and Nanotechnology Research Center (NTRC), and Department of Chemistry, Chonnam National University, Gwangju 500-757, Korea.
authors.forename: Myoung-Hee
authors.initials: MH
authors.lastname: Kim
authors.forename: Jun
authors.initials: J
authors.lastname: Lee
authors.forename: Soo-Yong
authors.initials: SY
authors.lastname: Mo
authors.forename: Hee-Gweon
authors.initials: HG
authors.lastname: Woo
authors.forename: Kap Seung
authors.initials: KS
authors.lastname: Yang
authors.forename: Bo-Hye
authors.initials: BH
authors.lastname: Kim
authors.forename: Byeong-Gweon
authors.initials: BG
authors.lastname: Lee
authors.forename: Honglae
authors.initials: H
authors.lastname: Sohn