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- 6Photonic Materials
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- 3Poly (N-isopropylacrylamide)-Based Microgels
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Anthocyanins and Gingerols Exhibit Synergism in their Anticancer and Antioxidant Effects in Vitro
DownloadFall 2022
Anthocyanins and gingerols are naturally occurring phenolic compounds abundant in berries and ginger, respectively. They have been reported to induce antioxidant effects, inhibit the growth of different cancer cell lines, and stimulate apoptosis by modulating different cellular signal pathways....
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2015
Guo, Siyuan, Zhang, Qiang M., Serpe, Michael J., Wei, Menglian, Gao, Yongfeng
A device constructed by sandwiching a thin film of poly(N-isopropylacrylamide)-co-acrylic acid (pNIPAmco-AAc) microgels between two thin layers of Au (all on a glass support) was used as a novel platform for controlled release of small molecules (drugs). In this submission, the model drug tris...
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Fall 2015
Bimetallicity is known to provide synergistic effects and improve catalytic performance of monometallic counterparts in a variety of applications. Conventional impregnation methods for supported catalyst preparation do not allow for the control of bimetallic nanoparticle structure or size, which...
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Enzyme-assisted polymer film degradation-enabled biomolecule sensing with poly (N-isopropylacrylamide)-based optical devices
Download2018-01-01
Zhang, Wei, Wei, Menglian, Carvalho, Wildemar S. P., Serpe, Michael J.
A biosensor for mouse Immunoglobulin G (IgG) was generated from responsive polymer-based interference filters (etalons). To accomplish this, an excess amount of alkaline phosphatase-modified goat anti-mouse IgG (AP-GAM, F(ab’)2 fragment specific to mouse IgG) was added to mouse IgG, and allowed...
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2015
Berg, Darren, Mugo, Samuel M., Zhang, Qiang M., Serpe, Michael J.
Lipase-modified pH-responsive poly(N-isopropylacrylamide)-based microgels were synthesized. An optical device was subsequently fabricated by sandwiching the enzyme loaded responsive microgels between two thin Au layers, and their response to triolein, a model triglyceride, was investigated. The...
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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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2012
Poly (N-isopropylacrylamide) (pNIPAm) is one of the most completely studied “smart” polymers due to its unique reversible thermoresponsivity. That is, when pNIPAm in water is heated > ~31°C, it transits from a random coil to a globule conformation; this transition is reversed when T < ~31°C. This...
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2012-05-09
Poly (N-isopropylacrylamide) (pNIPAm) is one of the most completely studied “smart” polymers due to its unique reversible thermoresponsivity. That is, when pNIPAm in water is heated > ~31°C, it transits from a random coil to a globule conformation; this transition is reversed when T < ~31°C. This...
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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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2014
Ahiabu, Andrews, Islam, Molla R., Li, Xue, Serpe, Michael J.
Responsive polymer-based materials have found numerous applications due to their ease of synthesis and the variety of stimuli that they can be made responsive to. In this review, we highlight the group’s efforts utilizing thermoresponsive poly (N-isopropylacrylamide) (pNIPAm) microgel-based...