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Polymeric Surfactants for the New Millennium: A pH‐Responsive, Zwitterionic, Schizophrenic Diblock Copolymer
Author(s) -
Liu Shiyong,
Armes Steven P.
Publication year - 2002
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/1521-3773(20020415)41:8<1413::aid-anie1413>3.0.co;2-k
Subject(s) - micelle , copolymer , atom transfer radical polymerization , methacrylate , aqueous solution , polymer chemistry , chemistry , polymerization , benzoic acid , materials science , polymer , organic chemistry
Schizophrenic character : A novel zwitterionic AB diblock copolymer was prepared by atom‐transfer radical polymerization (ATRP) of 2‐(diethylamino)ethyl methacrylate (DEA) and 4‐vinyl benzoic acid (VBA). Both conventional micelles and inverted micelles can be formed in aqueous solution at ambient temperature, by controlling the solution pH. At low pH, VBA‐core micelles ( A ) are formed, at high pH DEA‐core micelles ( B ) are formed, and at neutral pH, the system precipitates ( C ; see figure).