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“One‐Pot” In Situ Formation of Gold Nanoparticles within Poly(acrylamide) Hydrogels
Author(s) -
Dolya Natalya,
Rojas Oscar,
Kosmella Sabine,
Tiersch Brigitte,
Koetz Joachim,
Kudaibergenov Sarkyt
Publication year - 2013
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201200727
Subject(s) - self healing hydrogels , colloidal gold , acrylamide , polyacrylamide , polymer , nanoparticle , polymer chemistry , chemical engineering , ionic bonding , chemistry , materials science , matrix (chemical analysis) , nanotechnology , organic chemistry , copolymer , ion , composite material , engineering
This paper focuses on two different strategies to incorporate gold nanoparticles (AuNPs) into the matrix of polyacrylamide (PAAm) hydrogels. Poly(ethyleneimine) (PEI) is used as both reducing and stabilizing agent for the formation of AuNPs. In addition, the influence of an ionic liquid (IL) (i.e., 1‐ethyl‐3‐methylimidazolium ethylsulfate) on the stability of the nanoparticles and their immobilization in the hydrogel is investigated The results show that AuNPs surrounded by a shell containing PEI and IL, synthesized according to the “one‐pot” approach, are much better immobilized within the PAAm hydrogel. Hereby, the IL is responsible for structural changes in the hydrogel as well as the improved stabilization and embedding of the AuNPs into the polymer gel matrix.