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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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2016-01-01
Song, Qiao, Gao, Yongfeng, Xu, Jiang-Fei, Qin, Bo, Serpe, Michael J., Zhang, Xi
This letter describes a new method for fabricating supramolecular microgels from supramonomers. To this end, we designed and assembled supramonomers with one acrylate moiety on each end on the basis of noncovalent host–guest interactions, which could be utilized as a cross-linker. Then...
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2014
Serpe, Michael J., Islam, Molla R.
In this submission we fabricated a humidity-responsive polymer-based actuator by layering negatively charged poly(N-isopropylacrylamide)-co-acrylic acid microgels and positively charged poly(diallyldimethyl ammonium chloride) on top of a flexible plastic substrate. We show that the extent of the...
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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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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...