Tunable Temperature Response of a Thermochromic Photonic Gel SensorContaining N-Isopropylacrylamide and 4-Acryloyilmorpholine

Collection with item attached
2017
Item details URL
http://open-repository.kisti.re.kr/cube/handle/open_repository/486560.do
DOI
10.3390/s17061398
Title
Tunable Temperature Response of a Thermochromic Photonic Gel SensorContaining N-Isopropylacrylamide and 4-Acryloyilmorpholine
Description
This study was financially supported by the Basic Science ResearchProgram through the National Research Foundation of Korea (NRF), whichis funded by the Ministry of Science, ICT and Future Planning, (GrantNo. 2016R1A2B4012313), and partially supported by the TechnologyInnovation Program (Grant No. 10062366) funded By the Ministry of Trade,industry & Energy, Korea.
abstract
In this study, thermochromic photonic gels were fabricated using 2-hydroxyethyl methacrylate (HEMA) as a hydrogel building block, and 4-Acryloyl morpholine (ACMO) and N-isopropylacrylamide (NIPAAM) as thermoresponsive monomers with different critical solution temperature behaviors. Rapid photopolymerization of opal-templated monomer mixtures of varying ACMO contents formed five individual thermochromic inverse opal photonic gels integrated on a single substrate. With temperature variation from 10 degrees C to 80 degrees C, the changes in reflective colors and reflectance spectra of the respective thermochromic gels were noted, and lambda(peak) changes were plotted. Because NIPAAM exhibits a lower critical solution temperature (LCST) at 33 degrees C, the NIPAAM-only gel showed a steep slope for lambda(peak)/dT below 40 degrees C, whereas the slope became flatter at high temperatures. As the ACMO content increased in the thermochromic gel, the curve of lambda(peak)/dT turned out to be gradual within the investigated temperature range, exhibiting the entire visible range of colors. The incorporation of ACMO in NIPAAM-based thermochromic gels therefore enabled a better control of color changes at a relatively high-temperature regime compared to a NIPAAM-only gel. In addition, ACMO-containing thermochromic gels exhibited a smaller hysteresis of lambda(peak) for the heating and cooling cycle.
provenance
Made available in Cube on 2018-09-28T16:10:54Z (GMT). No. of bitstreams: 0
language
English
author
Kye, Hwanam
Koh, Young Gook
Kim, Youkyung
Han, Sung Gu
Lee, Hyunjung
Lee, Wonmok
accessioned
2018-09-28T16:10:54Z
available
2018-09-28T16:10:54Z
issued
2017
citation
SENSORS(17): 6
issn
1424-8220
uri
http://open-repository.kisti.re.kr/cube/handle/open_repository/486560.do
Funder
산업통상자원부
Funding Program
소재부품산업전문기술개발사업
Project ID
1415152459
Jurisdiction
Rep.of Korea
Project Name
Development of large size architectural glass tiles with the expression of color characteristic through the photonic crystal particle coating, including self-cleaning and soil proof functions
rights
openAccess
subject
temperature sensor
N-isopropylacrylamide
4-Acryloyilmorpholine
lowercritical solution temperature
opal templating
photonic gel
type
article


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