TY  - JOUR
A1  - Brosnan, Sarah M.
A1  - Schlaad, Helmut
A1  - Antonietti, Markus
T1  - Aqueous Self-Assembly of Purely Hydrophilic Block Copolymers into Giant Vesicles
JF  - Angewandte Chemie : a journal of the Gesellschaft Deutscher Chemiker ; International edition
N2  - Self-assembly of macromolecules is fundamental to life itself, and historically, these systems have been primitively mimicked by the development of amphiphilic systems, driven by the hydrophobic effect. Herein, we demonstrate that self-assembly of purely hydrophilic systems can be readily achieved with similar ease and success. We have synthesized double hydrophilic block copolymers from polysaccharides and poly(ethylene oxide) or poly(sarcosine) to yield high molar mass diblock copolymers through oxime chemistry. These hydrophilic materials can easily assemble into nanosized (<500nm) and microsized (>5m) polymeric vesicles depending on concentration and diblock composition. Because of the solely hydrophilic nature of these materials, we expect them to be extraordinarily water permeable systems that would be well suited for use as cellular mimics.
KW  - block copolymers
KW  - polymersomes
KW  - polysaccharides
KW  - self-assembly
KW  - vesicles
Y1  - 2015
U6  - https://doi.org/10.1002/anie.201502100
SN  - 1433-7851
SN  - 1521-3773
VL  - 54
IS  - 33
SP  - 9715
EP  - 9718
PB  - Wiley-VCH
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Keckeis, Philipp
A1  - Zeller, Enriko
A1  - Jung, Carina
A1  - Besirske, Patricia
A1  - Kirner, Felizitas
A1  - Ruiz-Agudo, Cristina
A1  - Schlaad, Helmut
A1  - Cölfen, Helmut
T1  - Modular toolkit of multifunctional block copoly(2-oxazoline)s for the synthesis of nanoparticles
JF  - Chemistry - a European journal
N2  - Post-polymerization modification provides an elegant way to introduce chemical functionalities onto macromolecules to produce tailor-made materials with superior properties. This concept was adapted to well-defined block copolymers of the poly(2-oxazoline) family and demonstrated the large potential of these macromolecules as universal toolkit for numerous applications. Triblock copolymers with separated water-soluble, alkyne- and alkene-containing segments were synthesized and orthogonally modified with various low-molecular weight functional molecules by copper(I)-catalyzed azide-alkyne cycloaddition (CuAAC) and thiol-ene (TE) click reactions, respectively. Representative toolkit polymers were used for the synthesis of gold, iron oxide and silica nanoparticles.
KW  - block copolymers
KW  - click chemistry
KW  - nanoparticles
KW  - ring-opening
KW  - polymerization
KW  - surfactants
Y1  - 2021
U6  - https://doi.org/10.1002/chem.202101327
SN  - 0947-6539
SN  - 1521-3765
VL  - 27
IS  - 32
SP  - 8283
EP  - 8287
PB  - Wiley-VCH
CY  - Weinheim
ER  -