Abstract
Silver nanoparticles were synthesized in linear and branched polyelectrolyte matrices using different reductants and distinct synthesis conditions. The effect of the host hydrolyzed linear polyacrylamide and star-like copolymers dextran-graft-polyacrylamide of various compactness, the nature of the reductant, and temperature were studied on in situ synthesis of silver sols. The related nanosystems were analyzed by high-resolution transmission electron microscopy and UV-vis absorption spectrophotometry. It was established that the internal structure of the polymer matrix as well as the nature of the reductant determines the process of the silver nanoparticle formation. Specifically, the branched polymer matrices were much more efficient than the linear ones for stable nanosystem preparation.
Highlights
During the last decade, silver nanoparticles (Ag NPs) attract significant attention due to their unique optical, thermal, and electrical properties as well as their use as antibiotic materials, photocatalysts, and conductive nanoinks [1,2,3,4,5,6,7]
We have focused on the study of Ag sols synthesized in situ in linear and branched polyelectrolyte polymer matrices
The present study presents a study of Ag sols obtained in linear and branched polyelectrolyte matrices
Summary
Silver nanoparticles (Ag NPs) attract significant attention due to their unique optical, thermal, and electrical properties as well as their use as antibiotic materials, photocatalysts, and conductive nanoinks [1,2,3,4,5,6,7]. Physical and chemical techniques for nanometer-sized metal particle preparation can be used [7,8,9,10,11,12]. The advantages of branched polymer matrices in comparison with their linear polymer analogs for in situ nanoparticles formation are still not clear. This knowledge is needed to prove or disprove the necessity of using expensive materials. The chemical nature of the polymer matrices, the nature of the reductant, and temperature affect the shape and the size of the particles [20,21,22,23,24,25].
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