@misc{KirsteBrietzkeHoldtetal.2019,
  author    = {Kirste, Matthias and Brietzke, Thomas Martin and Holdt, Hans-J{\"u}rgen and Schilde, Uwe},
  title     = {The crystal structure of 1,12-diazaperylene, C₁₈H₁₀N₂},
  series = {Postprints der Universit{\"a}t Potsdam Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam Mathematisch-Naturwissenschaftliche Reihe},
  number    = {752},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-43650},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-436501},
  pages     = {3},
  year      = {2019},
  abstract  = {C₁₈H₁₀N₂, monoclinic, P2₁/c (no. 14), a=7.9297(9) {\AA}, b=11.4021(14) {\AA}, c=13.3572(15) {\AA}, β=105.363(8)°, V =1164.5(2) {\AA}³, Z =4, Rgt(F)=0.0325, wRref(F²)=0.0774, T =210(2) K.},
  language  = {en}
}
@misc{RajuLiebigHessetal.2019,
  author    = {Raju, Rajarshi Roy and Liebig, Ferenc and Hess, Andreas and Schlaad, Helmut and Koetz, Joachim},
  title     = {Temperature-triggered reversible breakdown of polymer-stabilized olive},
  series = {Postprints der Universit{\"a}t Potsdam Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam Mathematisch-Naturwissenschaftliche Reihe},
  number    = {751},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-43646},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-436461},
  pages     = {19271 -- 19277},
  year      = {2019},
  abstract  = {A one-step moderate energy vibrational emulsification method was successfully employed to produce thermo-responsive olive/silicone-based Janus emulsions stabilized by poly(N,N-diethylacrylamide) carrying 0.7 mol\% oleoyl side chains. Completely engulfed emulsion droplets remained stable at room temperature and could be destabilized on demand upon heating to the transition temperature of the polymeric stabilizer. Time-dependent light micrographs demonstrate the temperature-induced breakdown of the Janus droplets, which opens new aspects of application, for instance in biocatalysis.},
  language  = {en}
}
@misc{KruegerKellingLinkeretal.2019,
  author    = {Krueger, Tobias and Kelling, Alexandra and Linker, Torsten and Schilde, Uwe},
  title     = {Crystal structures of three cyclohexane‑based γ‑spirolactams},
  series = {Postprints der Universit{\"a}t Potsdam Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam Mathematisch-Naturwissenschaftliche Reihe},
  number    = {738},
  doi       = {10.25932/publishup-43491},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-434911},
  pages     = {9},
  year      = {2019},
  abstract  = {The title compounds, 2-azaspiro[4.5]deca-1-one, C₉H₁₅NO, (1a), cis-8-methyl-2-azaspiro[4.5]deca-1-one, C₁₀H₁₇NO, (1b), and trans-8-methyl-2-azaspiro[4.5]deca-1-one, C₁₀H₁₇NO, (1c), were synthesized from benzoic acids 2 in only 3 steps in high yields. Crystallization from n-hexane afforded single crystals, suitable for X-ray diffraction. Thus, the configurations, conformations, and interesting crystal packing effects have been determined unequivocally. The bicyclic skeleton consists of a lactam ring, attached by a spiro junction to a cyclohexane ring. The lactam ring adopts an envelope conformation and the cyclohexane ring has a chair conformation. The main difference between compound 1b and compound 1c is the position of the carbonyl group on the 2-pyrrolidine ring with respect to the methyl group on the 8-position of the cyclohexane ring, which is cis (1b) or trans (1c). A remarkable feature of all three compounds is the existence of a mirror plane within the molecule. Given that all compounds crystallize in centrosymmetric space groups, the packing always contains interesting enantiomer-like pairs. Finally, the structures are stabilized by intermolecular N-H···O hydrogen bonds.},
  language  = {en}
}
@misc{HeckKanehiraKneippetal.2019,
  author    = {Heck, Christian and Kanehira, Yuya and Kneipp, Janina and Bald, Ilko},
  title     = {Amorphous Carbon Generation as a Photocatalytic Reaction on DNA-Assembled Gold and Silver Nanostructures},
  series = {Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Mathematisch-Naturwissenschaftliche Reihe},
  number    = {732},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-43081},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-430812},
  pages     = {10},
  year      = {2019},
  abstract  = {Background signals from in situ-formed amorphous carbon, despite not being fully understood, are known to be a common issue in few-molecule surface-enhanced Raman scattering (SERS). Here, discrete gold and silver nanoparticle aggregates assembled by DNA origami were used to study the conditions for the formation of amorphous carbon during SERS measurements. Gold and silver dimers were exposed to laser light of varied power densities and wavelengths. Amorphous carbon prevalently formed on silver aggregates and at high power densities. Time-resolved measurements enabled us to follow the formation of amorphous carbon. Silver nanolenses consisting of three differently-sized silver nanoparticles were used to follow the generation of amorphous carbon at the single-nanostructure level. This allowed observation of the many sharp peaks that constitute the broad amorphous carbon signal found in ensemble measurements. In conclusion, we highlight strategies to prevent amorphous carbon formation, especially for DNA-assembled SERS substrates.},
  language  = {en}
}
@misc{AbbasVranicHoffmannetal.2019,
  author    = {Abbas, Ioana M. and Vranic, Marija and Hoffmann, Holger and El-Khatib, Ahmed H. and Montes-Bay{\´o}n, Mar{\´i}a and M{\"o}ller, Heiko Michael and Weller, Michael G.},
  title     = {Investigations of the Copper Peptide Hepcidin-25 by LC-MS/MS and NMR⁺},
  series = {Postprints der Universit{\"a}t Potsdam Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam Mathematisch-Naturwissenschaftliche Reihe},
  number    = {701},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-42792},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-427926},
  year      = {2019},
  abstract  = {Hepcidin-25 was identified as themain iron regulator in the human body, and it by binds to the sole iron-exporter ferroportin. Studies showed that the N-terminus of hepcidin is responsible for this interaction, the same N-terminus that encompasses a small copper(II) binding site known as the ATCUN (amino-terminal Cu(II)- and Ni(II)-binding) motif. Interestingly, this copper-binding property is largely ignored in most papers dealing with hepcidin-25. In this context, detailed investigations of the complex formed between hepcidin-25 and copper could reveal insight into its biological role. The present work focuses on metal-bound hepcidin-25 that can be considered the biologically active form. The first part is devoted to the reversed-phase chromatographic separation of copper-bound and copper-free hepcidin-25 achieved by applying basic mobile phases containing 0.1\% ammonia. Further, mass spectrometry (tandemmass spectrometry (MS/MS), high-resolutionmass spectrometry (HRMS)) and nuclear magnetic resonance (NMR) spectroscopy were employed to characterize the copper-peptide. Lastly, a three-dimensional (3D)model of hepcidin-25with bound copper(II) is presented. The identification of metal complexes and potential isoforms and isomers, from which the latter usually are left undetected by mass spectrometry, led to the conclusion that complementary analytical methods are needed to characterize a peptide calibrant or referencematerial comprehensively. Quantitative nuclear magnetic resonance (qNMR), inductively-coupled plasma mass spectrometry (ICP-MS), ion-mobility spectrometry (IMS) and chiral amino acid analysis (AAA) should be considered among others.},
  language  = {en}
}