N. Vishnevetskaya, V. Hildebrand, B.-J. Niebuur, I. Grillo, S. K. Filippov, A. Laschewsky, P. Müller-Buschbaum, C. M. Papadakis
"Schizophrenic" Micelles from Doubly Thermoresponsive Polysulfobetaine-b-poly(N-isopropylmethacrylamide) Diblock Copolymers
Macromolecules 2017, 50, 3985
DOI: 10.1021/acs.macromol.7b00356
By a 2-step RAFT polymerization sequence, a twofold thermoresponsive diblock copolymer is synthesized that bears a zwitterionic poly(sulfobetaine methacrylamide) block (PSPP) and a nonionic poly(N-isopropylmethacrylamide) (PNIPMAM) block. Combining the lower and upper critical solution temperature (LCST and UCST) behaviors of the constitutive homopolymers in aqueous solution, its temperature-dependent phase behavior and multifaceted induced self-assembly in D₂O is investigated in detail, using in particular turbidimetry and small-angle neutron scattering (SANS) in salt-free solution as well as in the presence of small amounts of NaCl and NaBr.
Zurück zur Übersicht »