TY - JOUR

T1 - Ag(0) Nanoparticles Stabilized with Poly(Ethylene Glycol)s Modified with Amino Groups

T2 - Formation and Properties in Solutions

AU - Gubarev, A. S.

AU - Lezov, A. A.

AU - Mikhailova, M. E.

AU - Senchukova, A. S.

AU - Ubyivovk, E. V.

AU - Nekrasova, T. N.

AU - Girbasova, N. V.

AU - Bilibin, A. Yu

AU - Tsvetkov, N. V.

PY - 2019/5/1

Y1 - 2019/5/1

N2 - Reducing and stabilizing abilities of three poly(ethylene glycol) (PEG) samples modified with primary amino groups in one or two terminal positions of the polymer chains, as well as with dendrons based on L-aspartic acid in both terminal positions of the polymer chains, have been studied. Stable dispersions of silver nanoparticles have been formed at room temperature in aqueous solutions of AgNO3 in the presence of the modified PEGs without additional reducing agents. Spectrophotometric examinations have shown that an increase in the number of amino groups per polymer molecule results in accelerating the formation of nanoparticles and improving the stabilizing ability of the modified PEGs. Molecular hydrodynamic methods (analytical centrifugation and dynamic light scattering) have been used to determine the absolute values of the molecular mass of silver nanoparticles stabilized with dendronized PEGs and the hydrodynamic sizes of the particles. Molecular hydrodynamics and electron microscopy have yielded interconsistent estimates of silver nanoparticle sizes.

AB - Reducing and stabilizing abilities of three poly(ethylene glycol) (PEG) samples modified with primary amino groups in one or two terminal positions of the polymer chains, as well as with dendrons based on L-aspartic acid in both terminal positions of the polymer chains, have been studied. Stable dispersions of silver nanoparticles have been formed at room temperature in aqueous solutions of AgNO3 in the presence of the modified PEGs without additional reducing agents. Spectrophotometric examinations have shown that an increase in the number of amino groups per polymer molecule results in accelerating the formation of nanoparticles and improving the stabilizing ability of the modified PEGs. Molecular hydrodynamic methods (analytical centrifugation and dynamic light scattering) have been used to determine the absolute values of the molecular mass of silver nanoparticles stabilized with dendronized PEGs and the hydrodynamic sizes of the particles. Molecular hydrodynamics and electron microscopy have yielded interconsistent estimates of silver nanoparticle sizes.

KW - SILVER NANOPARTICLES

KW - SIZE

KW - REDUCTION

KW - METHACRYLATE

KW - COPOLYMERS

KW - SCATTERING

KW - POLYMERS

KW - HYDROGEN

KW - CITRATE

KW - ACID

UR - http://www.scopus.com/inward/record.url?scp=85066937189&partnerID=8YFLogxK

UR - http://www.mendeley.com/research/ag0-nanoparticles-stabilized-polyethylene-glycols-modified-amino-groups-formation-properties-solutio

U2 - 10.1134/S1061933X19030062

DO - 10.1134/S1061933X19030062

M3 - Article

AN - SCOPUS:85066937189

VL - 81

SP - 226

EP - 234

JO - Colloid Journal

JF - Colloid Journal

SN - 1061-933X

IS - 3

ER -