Synthesis of size-tunable gold nanoparticles by poly(vinylphenol) and electrostatic multilayer deposition of the gold-poly(vinylphenol) nanocomposites.
Water-dispersible gold nanoparticles (GNPs) were synthesized by the polymer in situ redox technique at room temperature using poly(4-vinylphenol) (PVPh) as a simultaneous template/stabilizer and reducing agent. GNPs were characterized by its surface plasmon absorption peak at 536 nm. The average particle size of the gold-poly(4-vinylphenol) (Au-PVPh) nanocomposites decreases with increase in the ratio of PVPh to gold salt. A uniform multilayer of Au-PVPh nanocomposites was fabricated on glass surface by electrostatic layer-by-layer assembly using poly(diallyldimethylammonium chloride) (PDDAC) as the oppositely charged polycation. UV-vis spectra of the consecutive multilayer showed that the absorbance at 549 nm corresponding to GNPs increases linearly with the number of Au-PVPh nanocomposite layers, indicating regular bilayer growth.
Bhattacharjee
Rama Ranjan
RR
Polymer Science Unit, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India.
Chakraborty
Mukut
M
Mandal
Tarun K
TK
D002412:Cations; D020099:Coated Materials, Biocompatible; D004573:Electrolytes; D006046:Gold / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D008051:Lipid Bilayers / Q000737:chemistry; D008422:Materials Testing; D046529:Microscopy, Electron, Transmission; D036103:Nanotechnology / Q000379:methods*; D043942:Nanotubes / Q000737:chemistry*; D010084:Oxidation-Reduction; D010316:Particle Size; D019800:Phenol / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry; D011145:Polyvinyls / Q000737:chemistry*; D013053:Spectrophotometry; D055672:Static Electricity; D020349:Surface Plasmon Resonance; D013499:Surface Properties; D014466:Ultraviolet Rays
D002412:Cations; D020099:Coated Materials, Biocompatible; D004573:Electrolytes; D008051:Lipid Bilayers; D011108:Polymers; D011145:Polyvinyls; D019800:Phenol; D006046:Gold