Poly (N-isopropylacrylamide) Microgel-based Etalons and Etalon Arrays for Determining the Molecular Weight of Polymers in Solution

Authors

Molla R. Islam, Chapman UniversityFollow
Michael J. Serpe, University of AlbertaFollow

Document Type

Article

Publication Date

11-15-2013

Abstract

Positively and/or negatively charged poly (N-isopropylacrylamide)-based microgels were deposited on a single substrate and isolated regions of Au overlayers were deposited on top of the microgels. Each spatially isolated Au overlayer region had a different thickness to make an etalon array.We found that areas with a thin Au overlayer (5 nm) responded to a range of polymer molecular weights (MW), while areas with a thick overlayer (35 nm) can only respond to low molecular weight polyelectrolytes. By comparing the optical responses of the device’s individual array elements, a good approximation of the polyelectrolyteMWin solution can be made.

Comments

This article was originally published in APL Materials, volume 1, in 2013. https://doi.org/10.1063/1.4829975

Recommended Citation

Islam, M. R.; Serpe, M. J. Poly (N-isopropylacrylamide) Microgel-based Etalons and Etalon Arrays for Determining the Molecular Weight of Polymers in Solution. APL Mater., 2013, 1, 052108. https://doi.org/10.1063/1.4829975

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This work is licensed under a Creative Commons Attribution 3.0 License.