@article{BapolisiKielbBekiretal.2022, author = {Bapolisi, Alain Murhimalika and Kielb, Patrycja and Bekir, Marek and Lehnen, Anne-Catherine and Radon, Christin and Laroque, Sophie and Wendler, Petra and M{\"u}ller-Werkmeister, Henrike and Hartlieb, Matthias}, title = {Antimicrobial polymers of linear and bottlebrush architecture}, series = {Macromolecular rapid communications : publishing the newsletters of the European Polymer Federation}, volume = {43}, journal = {Macromolecular rapid communications : publishing the newsletters of the European Polymer Federation}, number = {19}, publisher = {Wiley-VCH}, address = {Weinheim}, issn = {1521-3927}, doi = {10.1002/marc.202200288}, pages = {14}, year = {2022}, abstract = {Polymeric antimicrobial peptide mimics are a promising alternative for the future management of the daunting problems associated with antimicrobial resistance. However, the development of successful antimicrobial polymers (APs) requires careful control of factors such as amphiphilic balance, molecular weight, dispersity, sequence, and architecture. While most of the earlier developed APs focus on random linear copolymers, the development of APs with advanced architectures proves to be more potent. It is recently developed multivalent bottlebrush APs with improved antibacterial and hemocompatibility profiles, outperforming their linear counterparts. Understanding the rationale behind the outstanding biological activity of these newly developed antimicrobials is vital to further improving their performance. This work investigates the physicochemical properties governing the differences in activity between linear and bottlebrush architectures using various spectroscopic and microscopic techniques. Linear copolymers are more solvated, thermo-responsive, and possess facial amphiphilicity resulting in random aggregations when interacting with liposomes mimicking Escheria coli membranes. The bottlebrush copolymers adopt a more stable secondary conformation in aqueous solution in comparison to linear copolymers, conferring rapid and more specific binding mechanism to membranes. The advantageous physicochemical properties of the bottlebrush topology seem to be a determinant factor in the activity of these promising APs.}, language = {en} } @article{DaniTauberZhangetal.2017, author = {Dani, Alessandro and Tauber, Karoline and Zhang, Weiyi and Schlaad, Helmut and Yuan, Jiayin}, title = {Stable Covalently Photo-Crosslinked Poly(Ionic Liquid) Membrane with Gradient Pore Size}, series = {Macromolecular rapid communications}, volume = {38}, journal = {Macromolecular rapid communications}, publisher = {Wiley-VCH}, address = {Weinheim}, issn = {1022-1336}, doi = {10.1002/marc.201700167}, pages = {4}, year = {2017}, abstract = {Porous polyelectrolyte membranes stable in a highly ionic environment are obtained by covalent crosslinking of an imidazolium-based poly(ionic liquid). The crosslinking reaction involves the UV light-induced thiol-ene (click) chemistry, and the phase separation, occurring during the crosslinking step, generates a fully interconnected porous structure in the membrane. The porosity is on the order of the micrometer scale and the membrane shows a gradient of pore size across the membrane cross-section. The membrane can separate polystyrene latex particles of different size and undergoes actuation in contact with acetone due to the asymmetric porous structure.}, language = {en} } @misc{SchwarzeMuellerAstetal.2014, author = {Schwarze, Thomas and M{\"u}ller, Holger and Ast, Sandra and Steinbr{\"u}ck, D{\"o}rte and Eidner, Sascha and Geißler, Felix and Kumke, Michael Uwe and Holdt, Hans-J{\"u}rgen}, title = {Fluorescence lifetime-based sensing of sodium by an optode}, publisher = {The Royal Society of Chemistry}, address = {Cambridge}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-76785}, pages = {14167 -- 14170}, year = {2014}, abstract = {We report a 1,2,3-triazol fluoroionophore for detecting Na+ that shows in vitro enhancement in the Na+-induced fluorescence intensity and decay time. The Na+-selective molecule 1 was incorporated into a hydrogel as a part of a fiber optical sensor. This sensor allows the direct determination of Na+ in the range of 1-10 mM by measuring reversible fluorescence decay time changes.}, language = {en} } @article{SchwarzeMuellerAstetal.2014, author = {Schwarze, Thomas and M{\"u}ller, Holger and Ast, Sandra and Steinbr{\"u}ck, D{\"o}rte and Eidner, Sascha and Geißler, Felix and Kumke, Michael Uwe and Holdt, Hans-J{\"u}rgen}, title = {Fluorescence lifetime-based sensing of sodium by an optode}, series = {Chemical Communications}, journal = {Chemical Communications}, editor = {Kumke, Michael Uwe}, publisher = {The Royal Society Chemistry}, address = {Cambridge}, issn = {0022-4936}, pages = {14167 -- 14170}, year = {2014}, abstract = {We report a 1,2,3-triazol fluoroionophore for detecting Na+ that shows in vitro enhancement in the Na+-induced fluorescence intensity and decay time. The Na+-selective molecule 1 was incorporated into a hydrogel as a part of a fiber optical sensor. This sensor allows the direct determination of Na+ in the range of 1-10 mM by measuring reversible fluorescence decay time changes.}, language = {en} }