@article{ZahoranovaLuxenhofer2021,
  author    = {Zahoranov{\´a}, Anna and Luxenhofer, Robert},
  title     = {Poly(2-oxazoline)- and Poly(2-oxazine)-Based Self-Assemblies, Polyplexes, and Drug Nanoformulations—An Update},
  series = {Advanced Healthcare Materials},
  volume    = {10},
  journal   = {Advanced Healthcare Materials},
  number    = {6},
  doi       = {10.1002/adhm.202001382},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-225833},
  year      = {2021},
  abstract  = {For many decades, poly(2-oxazoline)s and poly(2-oxazine)s, two closely related families of polymers, have led the life of a rather obscure research topic with only a few research groups world-wide working with them. This has changed in the last five to ten years, presumably triggered significantly by very promising clinical trials of the first poly(2-oxazoline)-based drug conjugate. The huge chemical and structural toolbox poly(2-oxazoline)s and poly(2-oxazine)s has been extended very significantly in the last few years, but their potential still remains largely untapped. Here, specifically, the developments in macromolecular self-assemblies and non-covalent drug delivery systems such as polyplexes and drug nanoformulations based on poly(2-oxazoline)s and poly(2-oxazine)s are reviewed. This highly dynamic field benefits particularly from the extensive synthetic toolbox poly(2-oxazoline)s and poly(2-oxazine)s offer and also may have the largest potential for a further development. It is expected that the research dynamics will remain high in the next few years, particularly as more about the safety and therapeutic potential of poly(2-oxazoline)s and poly(2-oxazine)s is learned.},
  language  = {en}
}
@article{LuebtowMarciniakSchmiedeletal.2019,
  author    = {L{\"u}btow, Michael M. and Marciniak, Henning and Schmiedel, Alexander and Roos, Markus and Lambert, Christoph and Luxenhofer, Robert},
  title     = {Ultra-high to ultra-low drug loaded micelles: Probing host-guest interactions by fluorescence spectroscopy},
  series = {Chemistry - A European Journal},
  volume    = {25},
  journal   = {Chemistry - A European Journal},
  number    = {54},
  doi       = {10.1002/chem.201902619},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-206128},
  pages     = {12601-12610},
  year      = {2019},
  abstract  = {Polymer micelles are an attractive means to solubilize water insoluble compounds such as drugs. Drug loading, formulations stability and control over drug release are crucial factors for drug-loaded polymer micelles. The interactions between the polymeric host and the guest molecules are considered critical to control these factors but typically barely understood. Here, we compare two isomeric polymer micelles, one of which enables ultra-high curcumin loading exceeding 50 wt.\%, while the other allows a drug loading of only 25 wt.\%. In the low capacity micelles, steady-state fluorescence revealed a very unusual feature of curcumin fluorescence, a high energy emission at 510 nm. Time-resolved fluorescence upconversion showed that the fluorescence life time of the corresponding species is too short in the high-capacity micelles, preventing an observable emission in steady-state. Therefore, contrary to common perception, stronger interactions between host and guest can be detrimental to the drug loading in polymer micelles.},
  subject      = {Polymer-drug interaction},
  language  = {en}
}
@article{SchulzJakschSchubeletal.2014,
  author    = {Schulz, Anita and Jaksch, Sebastian and Schubel, Rene and Wegener, Erik and Di, Zhenyu and Han, Yingchao and Meister, Annette and Kressler, J{\"o}rg and Kabanov, Alexander V. and Luxenhofer, Robert and Papadakis, Christine M. and Jordan, Rainer},
  title     = {Drug-Induced Morphology Switch in Drug Delivery Systems Based on Poly(2-oxazoline)s},
  series = {ACS Nano},
  volume    = {8},
  journal   = {ACS Nano},
  number    = {3},
  doi       = {10.1021/nn406388t},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-120766},
  pages     = {2686-96},
  year      = {2014},
  abstract  = {Defined aggregates of polymers such as polymeric micelles are of great importance in the development of pharmaceutical formulations. The amount of drug that can be formulated by a drug delivery system is an important issue, and most drug delivery systems suffer from their relatively low drug-loading capacity. However, as the loading capacities increase, i.e., promoted by good drug-polymer interactions, the drug may affect the morphology and stability of the micellar system. We investigated this effect in a prominent system with very high capacity for hydrophobic drugs and found extraordinary stability as well as a profound morphology change upon incorporation of paclitaxel into micelles of amphiphilic ABA poly(2-oxazoline) triblock copolymers. The hydrophilic blocks A comprised poly(2-methyl-2-oxazoline), while the middle blocks B were either just barely hydrophobic poly(2-n-butyl-2-oxazoline) or highly hydrophobic poly(2-n-nonyl-2-oxazoline). The aggregation behavior of both polymers and their formulations with varying paclitaxel contents were investigated by means of dynamic light scattering, atomic force microscopy, (cryogenic) transmission electron microscopy, and small-angle neutron scattering. While without drug, wormlike micelles were present, after incorporation of small amounts of drugs only spherical morphologies remained. Furthermore, the much more hydrophobic poly(2-n-nonyl-2-oxazoline)-containing triblock copolymer exhibited only half the capacity for paclitaxel than the poly(2-n-butyl-2-oxazoline)-containing copolymer along with a lower stability. In the latter, contents of paclitaxel of 8 wt \% or higher resulted in a raspberry-like micellar core.},
  language  = {en}
}