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Polyelectrolytes with Tunable Charge Based on Polydehydroalanine: Synthesis and Solution Properties
Author(s) -
Günther Ulrike,
Sigolaeva Larisa V.,
Pergushov Dmitry V.,
Schacher Felix H.
Publication year - 2013
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201300324
Subject(s) - nitroxide mediated radical polymerization , polyelectrolyte , polymer chemistry , potentiometric titration , polymerization , chemistry , aqueous solution , polymer , titration , cationic polymerization , derivative (finance) , yield (engineering) , radical polymerization , materials science , organic chemistry , ion , financial economics , economics , metallurgy
Poly( tert ‐butoxycarbonylaminomethylacrylate) (P t BAMA), a derivative of polydehydroalanine (PDha), is synthesized using free radical polymerization (FRP) and nitroxide mediated polymerization (NMP). Due to the presence of orthogonal protective groups, the resulting polymers can be selectively deprotected to yield either a polyanion (poly( tert ‐butoxycarbonylaminoacrylic acid), P t BAA) or a polycation (poly(aminomethylacrylate), PAMA). Deprotection of both the amino‐ and the carboxyl‐functionality in a sequential manner leads to the potential polyzwitterion polydehydroalanine (PDha). The pH‐dependent solution behavior of P t BAA, PAMA, and PDha are examined in aqueous solution by potentiometric and turbidimetric titrations as well as ζ‐potential measurements.