Gold-copolymer nanoparticles: Poly(ε-caprolactone)/poly( N-vinyl-2-pyrrolydone) Biodegradable triblock copolymer as stabilizer and reductant

Gold-copolymer composed nanoparticles were synthesized using the triblock copolymer (PVP–PCL–PVP) and potassium tetrachloro aurate (III), both in aqueous solution. The copolymer work as both, reductant and stabilizer agent. Block copolymers have been extensively used in the synthesis of many types o...

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Bibliographic Details
Published in:European polymer journal 2009-11, Vol.45 (11), p.3035-3042
Main Authors: Leiva, Angel, Saldías, César, Quezada, Caterina, Toro-Labbé, Alejandro, Espinoza-Beltrán, Francisco J., Urzúa, Marcela, Gargallo, Ligia, Radic, Deodato
Format: Article
Language:English
Subjects:
Applied sciences
Biodegradable
Copolymer
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Gold-copolymer
Materials science
Nanoparticles
Nanoscale materials and structures: fabrication and characterization
Organic polymers
Other topics in nanoscale materials and structures
Physicochemistry of polymers
Physics
Properties and characterization
Special properties (catalyst, reagent or carrier)
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Summary:Gold-copolymer composed nanoparticles were synthesized using the triblock copolymer (PVP–PCL–PVP) and potassium tetrachloro aurate (III), both in aqueous solution. The copolymer work as both, reductant and stabilizer agent. Block copolymers have been extensively used in the synthesis of many types of nanoparticles, where generally are considered as stabilizer and protective agent. In this work a double function of the biodegradable triblock copolymer poly( N-vinyl-2-pyrrolidone)- b-poly(ε-caprolactone)- b-poly( N-vinyl-2-pyrrolidone), (PVP–PCL–PVP) in the gold nanoparticle-copolymer synthesis is reported. Gold-copolymer composed nanoparticles were synthesized using the triblock copolymer (PVP–PCL–PVP) and potassium tetrachloro aurate (III), both in aqueous solution. The copolymer work as both, reductant and stabilizer agent. The obtained nanoparticles were characterized by FT-IR, dynamic light scattering (DLS), atomic force microscopy (AFM) and transmission electron microscopy (TEM). The shape and the size of the obtained nanoparticles are dependent on the copolymer/salt of gold concentration ratio used in the synthesis. To complement the experimental results about the copolymer role in the nanoparticles synthesis, computational tools were used to characterize the reactivity of the reactant species.
ISSN:0014-3057
1873-1945
DOI:10.1016/j.eurpolymj.2009.08.005