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Gold Nanospheres Assembled on Hydrogel Colloids Display a Wide Range of Thermoreversible Changes in Optical Bandwidth for Various Plasmonic-Based Color Switches

Title
Gold Nanospheres Assembled on Hydrogel Colloids Display a Wide Range of Thermoreversible Changes in Optical Bandwidth for Various Plasmonic-Based Color Switches
Author
조은철
Keywords
CORE-SHELL PARTICLES; BIOLOGICAL APPLICATIONS; AU NANOPARTICLES; MICROGELS; DIMERS; NANOSHELLS; DESIGN; GROWTH; SUPERSTRUCTURES; NANOSTRUCTURES
Issue Date
2014-05
Publisher
AMER CHEMICAL SOC, 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
Citation
CHEMISTRY OF MATERIALS, MAY 27 2014, 26(10), p3272-p3279
Abstract
An approach is presented that permits wide and reversible control of the optical bandwidth of spherical gold nanoparticles assembled on thermoreversible hydrogel colloids for various plasmonic-based thermochromisms. Temperature-dependent swelling and shrinking behaviors of the hydrogel colloids in aqueous systems manipulated assembly structures and optical signals of gold nanoparticles in the hybrid colloids. The optical bandwidths of the hybrid colloids increased with temperature, and thermoreversible bandwidth variations of the hybrid colloids were increased with the diameter of gold nanoparticles (from 15 to 51 nm). These hybrid colloids exhibited multiple colors switching during temperature changes (maximum four colors: wine <-> violet <-> dark blue <-> faint blue). For the hybrid colloids showing a small bandwidth variation, another method was introduced to display different color switching.
URI
https://pubs.acs.org/doi/10.1021/cm501061thttp://hdl.handle.net/20.500.11754/46237
ISSN
0897-4756
DOI
10.1021/cm501061t
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > CHEMICAL ENGINEERING(화학공학과) > Articles
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