TY - JOUR
T1 - Morphologically well-defined gold nanoparticles embedded in thermo-responsive hydrogel matrices
AU - Wang, Chun
AU - Flynn, Nolan T.
AU - Langer, Robert
PY - 2004
Y1 - 2004
N2 - Nanocomposite materials consisting of colloidal gold (Au) nanoparticles embedded in thermo-responsive poly(N-isopropylacrylamide) (PNIPAm) hydrogels are synthesized. Thiol groups that bind to both Au3+ ions and colloidal Au are incorporated into the side-chains of the PNIPAm hydrogels through copolymerization. This report describes formation of morphologically well-defined Au nanoparticles with varying long-term stability inside the hydrogel matrices containing adjustable concentrations of thiols. Compared with the non-Au containing PNIPAm hydrogels, the Au-PNIPAm nanocomposite hydrogels have shown higher degrees of equilibrium swelling and different temperature-triggered phase transitions. It is hypothesized that these remarkable changes in hydrogel bulk properties are related to the different morphologies and sizes, and possibly the amount of surface charges, of the Au nanoparticles.
AB - Nanocomposite materials consisting of colloidal gold (Au) nanoparticles embedded in thermo-responsive poly(N-isopropylacrylamide) (PNIPAm) hydrogels are synthesized. Thiol groups that bind to both Au3+ ions and colloidal Au are incorporated into the side-chains of the PNIPAm hydrogels through copolymerization. This report describes formation of morphologically well-defined Au nanoparticles with varying long-term stability inside the hydrogel matrices containing adjustable concentrations of thiols. Compared with the non-Au containing PNIPAm hydrogels, the Au-PNIPAm nanocomposite hydrogels have shown higher degrees of equilibrium swelling and different temperature-triggered phase transitions. It is hypothesized that these remarkable changes in hydrogel bulk properties are related to the different morphologies and sizes, and possibly the amount of surface charges, of the Au nanoparticles.
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U2 - 10.1557/proc-820-r2.2
DO - 10.1557/proc-820-r2.2
M3 - Conference article
AN - SCOPUS:14944367844
SN - 0272-9172
VL - 820
SP - 333
EP - 338
JO - Materials Research Society Symposium Proceedings
JF - Materials Research Society Symposium Proceedings
M1 - R2.2
T2 - Nanoengineered Assemblies and Advanced Micro/Nanosystems
Y2 - 13 April 2004 through 16 April 2004
ER -