“A simple way of preparing large compound vesicles loaded with and without silver nanoparticles based on polystyrene-block-polyacrylonitrile”論文發(fā)表在SCI
AbstractBy a simple method, large compound vesicles
(LCVs) and LCVs with silver nanoparticles (Ag@LCVs)
are created from asymmetric polystyrene-block-polyacrylonitrile (PS-b-PAN) and silver precursor. The asymmetric PSb-PAN is polymerized by sequential reverse atom transfer
radical polymerization and atom transfer radical polymerization. Afterwards, by using N,N′-dimethylformamide as
solvent and reductant for the silver precursor, LCVs and
Ag@LCVs are produced through simple drop casting and
evaporation of solution on the substrate. Transmission electron microscope images together with scanning electron
microscopy images show that both LCVs and Ag@LCVs
are flowerlike and of rough surfaces. Ultraviolet-visible
spectrophotometer confirms the formation of Ag nanoparticles (Ag NPs). Specifically, the distribution of Ag NPs in
Ag@LCVs is not uniform and they are principally in the
center. Otherwise, adherence of simple vesicles and small
hybrid nanoparticles of Ag NPs encapsulated within PS-bPAN are observed. Finally, formation mechanisms for LCVs
and Ag@LCVs are discussed.