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@ARTICLE{Schardt:619008,
author = {Schardt, Lisa and Da Vela, Stefano and Guajardo, Alejandro
Martínez and Jaugstetter, Maximilian and Tschulik, Kristina
and Laschewsky, André and Rosenhahn, Axel},
title = {{A}ntipolyelectrolyte {R}esponse of {A}mphiphilic
{S}ulfobetaine {P}olymer {C}oatings},
journal = {Advanced materials interfaces},
volume = {12},
number = {6},
issn = {2196-7350},
address = {Weinheim},
publisher = {Wiley-VCH},
reportid = {PUBDB-2024-07318},
pages = {2400610},
year = {2025},
note = {The authors gratefully acknowledge funding by the Deutsche
Forschungs-gemeinschaft (DFG) GRK2376/331085229, LA 611/14,
RO 2524/4, andONR N00014-20-12244.},
abstract = {Zwitterionic, amphiphilic polymer coatings are an effective
strategy to decrease biofouling. Yet their performance
strongly depends on the mechanical properties, the degree of
swelling, and the structure of the swollen hydrogels. These
properties depend on the zwitterionic groups in the polymers
and the properties of the surrounding electrolyte.
Therefore, the influence of the ions present and their
concentrations on the swelling behavior of amphiphilic
zwitterionic copolymers is studied. Coatings of
3-[N-2′-(methacryloyloxy)ethyl-N,N-dimethyl]-ammoniopropane-1-sulfonate
(SPE) with increasing amounts of butyl-methacrylate (BMA)
are compared to the respective homopolymers PSPE and PBMA.
Surface plasmon resonance spectroscopy shows a salt
concentration-dependent anti-polyelectrolyte behavior. A
variation of the salts revealed that the anions dominated
the swelling response, while a change of cations has hardly
any effect. Small angle X-ray scattering reveals the
morphological changes in the polymer films that accompanied
the swelling. With increasing salt concentration, the
internal structure changed from compact pores in a gel-like
network to elongated cylindrical pores at higher salinities.
The understanding gained from the presented multi-technique
approach allows to understand the behavior of zwitterionic
coatings in saline solutions and helps to tailor the
swelling response and mechanical properties for future
marine and medical low-fouling applications.},
cin = {EMBL-User},
ddc = {600},
cid = {I:(DE-H253)EMBL-User-20120814},
pnm = {6G3 - PETRA III (DESY) (POF4-6G3) / GRK 2376 - GRK 2376:
Umgrenzungsgesteuerte Chemie (331085229) / SINE2020 - World
class Science and Innovation with Neutrons in Europe 2020
– SINE2020 (654000)},
pid = {G:(DE-HGF)POF4-6G3 / G:(GEPRIS)331085229 /
G:(EU-Grant)654000},
experiment = {EXP:(DE-H253)P-P12-20150101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:001354624200001},
doi = {10.1002/admi.202400610},
url = {https://bib-pubdb1.desy.de/record/619008},
}