Journal
ACS MACRO LETTERS
Volume 2, Issue 3, Pages 226-229Publisher
AMER CHEMICAL SOC
DOI: 10.1021/mz300661f
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Funding
- EPSCoR DOE/JINS Travel Fellowship
- U.S. Department of Energy (DOE) [DE-AC05-00OR22725]
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We have tailored the internal architecture of ultrathin poly(methacrylic acid) (PMAA) hydrogels from well stratified to highly intermixed by controlling the internal structure in layer-by-layer templates used for hydrogel fabrication. We have found pH-triggered swelling properties of these hydrogels to be significantly affected by hydrogel architecture. Well-stratified hydrogels exhibited a dramatic 10-fold increase in thickness when transitioned between pH = 5 and 7.5, unlike the 2-fold swelling observed in less-organized hydrogels.
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