Plasmonic device based on a PAAm hydrogel/gold nanoparticles composite

ABSTRACT Stimuli‐resposive hydrogels, such as poly(acrylamide), are smart materials that can be loaded with gold nanoparticles to explore the localized surface plasmon resonance effect to develop an optical device. Here we used electropolymerized poly(acrylamide) hydrogel for entrapped gold nanopart...

Full description

Saved in:
Bibliographic Details
Published in:Journal of applied polymer science 2015-09, Vol.132 (34), p.np-n/a
Main Authors: Monteiro, Johny Paulo, Predabon, Sheila Maria, da Silva, Cleiser Thiago Pereira, Radovanovic, Eduardo, Girotto, Emerson Marcelo
Format: Article
Language:English
Subjects:
Aqueous solutions
colloids
composites
Devices
Gold
Hydrogels
Materials science
Nanoparticles
nanowires and nanocrystals
optical properties
Plasmonics
Plasmons
Polymers
sensors and actuators
Serum albumin
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:ABSTRACT Stimuli‐resposive hydrogels, such as poly(acrylamide), are smart materials that can be loaded with gold nanoparticles to explore the localized surface plasmon resonance effect to develop an optical device. Here we used electropolymerized poly(acrylamide) hydrogel for entrapped gold nanoparticles into gel structure (composite) to prepare a plasmonic device. Sensing tests were performed; for this bovine serum albumin molecules were placed into the composite by diffusion from an aqueous solution. The presence of the molecules alters the refractive index around the gold nanoparticles, changing its resonance conditions. The plasmonic band shifted ∼3.8 nm when the composite was incubated at the 20 µg/mL bovine serum albumin solution, which is a result comparable to reports elsewhere using gold nanoparticles on glass substrates. The device showed that it was possible to detect significantly low concentrations up to 10 ng/mL of protein in aqueous solution. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42449.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.42449