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- 7Stimuli-Responsive Polymers
- 6Etalons
- 6Photonic Materials
- 4N-Isopropylacrylamide
- 4Responsive Polymers
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Comparison of the Responsivity of Solution-Suspended and Surface-Bound Poly (N-isopropylacrylamide)-Based Microgels for Sensing Applications
Download2017-01-01
Li, Wenxiang, Hu, Liang, Zhu, Jinghua, Li, Dan, Luan, Yafei, Xu, Wenwen, Serpe, Michael J.
In this submission, the phase transition behavior for poly(N-isopropylacrylamide-co-acrylic acid) (pNIPAm-co-AAc) microgels and their assemblies was investigated as a function of temperature and pH using UV–vis spectroscopy (to probe light scattering behavior) and quartz crystal microbalance with...
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The influence of deposition solution pH and ionic strength on the quality of poly (N-isopropylacrylamide) microgel-based thin films and etalons
Download2013-01-01
Poly(N-isopropylacrylamide)-co-acrylic acid (pNIPAm-co-AAc) microgel-based thin films and etalons were fabricated via “painting” a pNIPAm-co-AAc microgel monolayer on a Au-coated substrate, followed by the deposition of another Au overlayer. Herein, in situ observation of how the pH and ionic...
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Poly (N-isopropylacrylamide) microgel-based etalons for the label-free quantitation of estradiol-17β in aqueous solutions and milk samples
Download2018-01-01
Jiang, Yaxin, Colazo, Marcos G., Serpe, Michael J.
A novel estradiol-17β (E2) biosensor was constructed from poly(N-isopropylacrylamide) (pNIPAm) microgel-based etalons by modification of their outermost Au layer with an E2 binding 75-mer DNA aptamer. When E2 is not present in the solution, the aptamer forms a loose/linear structure that allows...
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Detecting solution pH changes using poly (N-isopropylacrylamide)-co-acrylic acid microgel-based etalon modified quartz crystal microbalances
Download2012-01-01
Johnson, Kai C. C., Mendez, Francisco, Serpe, Michael J.
Poly (N-isopropylacrylamide)-co-acrylic acid (pNIPAm-co-AAc) microgel-based etalons have been shown to have visible color and unique spectral properties, which both depend on solution temperature and pH. In this investigation, pNIPAm-co-AAc microgel-based etalons were fabricated on the Au...
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2013-01-01
Islam, Molla R., Lu, Zhenzhen, Li, Xue, Sarker, Avijeet K., Hu, Liang, Choi, Paul, Li, Xi, Hakobyan, Narek, Serpe, Michael J.
Stimuli-responsive polymers are capable of translating changes in their local environment to changes in their chemical and/or physical properties. This ability allows stimuli-responsive polymers to be used for a wide range of applications. In this review, we highlight the analytical applications...
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2017-01-01
Gao, Yongfeng, Wei, Menglian, Li, Xue, Xu, Wenwen, Ahiabu, Andrews, Perdiz, Juliana, Liu, Zining, Serpe, Michael J.
Stimuli-responsive polymers are capable of changing their chemical and/or physical properties in response to environmental stimuli. This unique feature has allowed stimuli-responsive polymers to be used in a variety of applications. In this review, we present a basic introduction to the theories...
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2016-01-01
By depositing layers composed of poly (N‐isopropylacrylamide)‐based microgels and the polyelectrolyte polydiallyldimethylammonium chloride on a flexible substrate, responsive materials that bend upon drying can be fabricated; the extent of the bending depends on atmospheric humidity. This study...
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Poly (N-isopropylacrylamide) microgel based assemblies for organic dye removal from water: microgel diameter effects
Download2012-01-01
Parasuraman, Deepika, Leung, Edmund, Serpe, Michael J.
Poly (N-isopropylacrylamide)-co-acrylic acid (pNIPAm-co-AAc) microgel based assemblies (aggregates) were synthesized from microgels of various diameters via polymerization of the crosslinker N,N′-methylenebisacrylamide (BIS) in the presence of microgels in solution. We investigated the ability of...
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Penetration of polyelectrolytes into charged poly (N-isopropylacrylamide) microgel layers confined between two surfaces
Download2013-01-01
Islam, Molla R., Serpe, Michael J.
pH and temperature sensitive poly(N-isopropylacrylamide) (pNIPAm) microgel-based etalons were fabricated by sandwiching a “monolithic” microgel layer between two semitransparent, 15 nm Au layers. The devices exhibit visual color and multipeak reflectance spectra, both of which primarily depend on...
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Label-free detection of low protein concentration in solution using a novel colorimetric assay
Download2013-01-01
Islam, Molla R., Serpe, Michael J.
Dual pH and temperature sensitive microgel-based etalons were fabricated by sandwiching a “monolithic” microgel layer between two semitransparent, Au layers. The devices exhibit visual color and multipeak reflectance spectra, both of which primarily depend on the distance between the Au surfaces...