Alswieleh AM1, Cheng N, Leggett GJ, Armes SP.
Langmuir. 2014 Feb 11;30(5):1391-400. doi: 10.1021/la403666y. Epub 2014 Jan 28.Surface-initiated atom transfer radical polymerization (ATRP) of 2-(tert-butylamino)ethyl methacrylate (TBAEMA) produced pH-responsive secondary amine-functionalized polymer brushes with dry thicknesses ranging from 4 to 28 nm, as determined by ellipsometry. At low pH, linear PTBAEMA brushes became protonated and highly swollen; brush collapse occurred when the solution pH was increased to ca. 7.7 due to deprotonation. Read More