Responsive Nanoassemblies Via Interpolyelectrolyte Complexation of Amphiphilic Block Copolymer Micelles
Document Type
Article
Publication Date
12-12-2006
Department
Chemistry and Biochemistry
Abstract
Shell "locked" nanoassemblies ranging in size from 34 to 78 nm have been prepared from interpolyelectrolyte complexation of block copolymer micelles of poly[(N,N-dimethylacrylamide)-b-(N-acryloylalanine)-b-(N-isopropylacrylamide)] with the homopolymer poly(ar-vinylbenzyl)trimethylammonium chloride above the unimer to micelle phase transition temperature of the block copolymer in water. Of technological significance is the reversibility of the shell cross-linking by addition of 0.4 M NaCl, allowing micelle dissociation below the lower critical solution temperature of the copolymer micelles. Poly(N-acryloylalanine) (AAL) and block copolymers were prepared directly in water via controlled reversible addition fragmentation chain transfer ( RAFT) polymerization utilizing mono- and difunctional poly(N,N-dimethylacrylamide) macroCTAs.
Publication Title
Macromolecules
Volume
39
Issue
25
First Page
8594
Last Page
8602
Recommended Citation
Lokitz, B.,
Convertine, A.,
Ezell, R.,
Heidenreich, A.,
Li, Y.,
McCormick, C.
(2006). Responsive Nanoassemblies Via Interpolyelectrolyte Complexation of Amphiphilic Block Copolymer Micelles. Macromolecules, 39(25), 8594-8602.
Available at: https://aquila.usm.edu/fac_pubs/9035