@article{HaberlandRietbrockLangeetal.2006, author = {Haberland, Christian and Rietbrock, Andreas and Lange, Dietrich and Bataille, Klaus and Hofmann, S.}, title = {Interaction between forearc and oceanic plate at the south-central Chilean margin as seen in local seismic data}, series = {Geophysical research letters}, volume = {33}, journal = {Geophysical research letters}, number = {23}, publisher = {Union}, address = {Washington}, issn = {0094-8276}, doi = {10.1029/2006GL028189}, pages = {5}, year = {2006}, abstract = {We installed a dense, amphibious, temporary seismological network to study the seismicity and structure of the seismogenic zone in southern Chile between 37° and 39°S, the nucleation area of the great 1960 Chile earthquake. 213 local earthquakes with 14.754 onset times were used for a simultaneous inversion for the 1-D velocity model and precise earthquake locations. Relocated artificial shots suggest an accuracy of the earthquake hypocenter of about 1 km (horizontally) and 500 m (vertically). Crustal events along trench-parallel and transverse, deep-reaching faults reflect the interseismic transpressional deformation of the forearc crust due to the subduction of the Nazca plate. The transverse faults seems to accomplish differential lateral stresses between subduction zone segments. Many events situated in an internally structured, planar seismicity patch at 20 to 40 km depth near the coast indicate a stress concentration at the plate's interface at 38°S which might in part be induced by the fragmented forearc structure.}, language = {en} } @article{Lange2009, author = {Lange, Andreas}, title = {Save Game}, series = {DIGAREC Lectures 2008/09 : Vortr{\"a}ge am Zentrum f{\"u}r Computerspielforschung mit Wissenschaftsforum der Deutschen Gamestage ; Quo Vadis 2008 und 2009}, journal = {DIGAREC Lectures 2008/09 : Vortr{\"a}ge am Zentrum f{\"u}r Computerspielforschung mit Wissenschaftsforum der Deutschen Gamestage ; Quo Vadis 2008 und 2009}, number = {2}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-004-5}, issn = {1867-6219}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-33279}, pages = {46 -- 59}, year = {2009}, abstract = {Der Artikel beschreibt die Rahmenbedingungen der Bewahrung digitaler Kulturg{\"u}ter. Dabei konzentriert er sich vor allem auf die Bewahrung von Computerspielen, da diese als {\"a}ltestes digitales Massenmedium die l{\"a}ngste Bewahrungstradition haben und als komplexe digitale Artefakte h{\"o}chste Anspr{\"u}che an die Bewahrungsmethoden und -techniken stellen. Desweiteren wird eine historische Verortung der Bewahrung von Computerspielen vorgenommen, indem Besonderheiten vor dem Hintergrund eines Vergleichs mit der Bewahrung des ehemals neuen Mediums Film benannt werden. Am Ende des Artikels wird das EU Forschungsprojekt KEEP vorgestellt, das im Kern das Ziel hat, die bisher praktizierte Bewahrungsstrategie f{\"u}r komplexe digitale Artefakte (Emulatorenstrategie) nachhaltig und systematisch zu etablieren.}, language = {de} } @article{LangeBrauneLuetzowetal.2012, author = {Lange, Maik and Braune, Steffen and Luetzow, Karola and Richau, Klaus and Scharnagl, Nico and Weinhart, Marie and Neffe, Axel T. and Jung, Friedrich and Haag, Rainer and Lendlein, Andreas}, title = {Surface functionalization of poly(ether imide) membranes with linear, methylated oligoglycerols for reducing thrombogenicity}, series = {Macromolecular rapid communications}, volume = {33}, journal = {Macromolecular rapid communications}, number = {17}, publisher = {Wiley-VCH}, address = {Weinheim}, issn = {1022-1336}, doi = {10.1002/marc.201200426}, pages = {1487 -- 1492}, year = {2012}, abstract = {Materials for biomedical applications are often chosen for their bulk properties. Other requirements such as a hemocompatible surface shall be fulfilled by suitable chemical functionalization. Here we show, that linear, side-chain methylated oligoglycerols (OGMe) are more stable to oxidation than oligo(ethylene glycol) (OEG). Poly(ether imide) (PEI) membranes functionalized with OGMes perform at least as good as, and partially better than, OEG functionalized PEI membranes in view of protein resistance as well as thrombocyte adhesion and activation. Therefore, OGMes are highly potent surface functionalizing molecules for improving the hemocompatibility of polymers.}, language = {en} } @article{NeffevonRuestenLangeBrauneetal.2013, author = {Neffe, Axel T. and von R{\"u}sten-Lange, Maik and Braune, Steffen and L{\"u}tzow, Karola and Roch, Toralf and Richau, Klaus and Jung, Friedrich and Lendlein, Andreas}, title = {Poly(ethylene glycol) grafting to Poly(ether imide) membranes - influence on protein adsorption and Thrombocyte adhesion}, series = {Macromolecular bioscience}, volume = {13}, journal = {Macromolecular bioscience}, number = {12}, publisher = {Wiley-VCH}, address = {Weinheim}, issn = {1616-5187}, doi = {10.1002/mabi.201300309}, pages = {1720 -- 1729}, year = {2013}, abstract = {The chain length and end groups of linear PEG grafted on smooth surfaces is known to influence protein adsorption and thrombocyte adhesion. Here, it is explored whether established structure function relationships can be transferred to application relevant, rough surfaces. Functionalization of poly(ether imide) (PEI) membranes by grafting with monoamino PEG of different chain lengths (M-n=1kDa or 10kDa) and end groups (methoxy or hydroxyl) is proven by spectroscopy, changes of surface hydrophilicity, and surface shielding effects. The surface functionalization does lead to reduction of adsorption of BSA, but not of fibrinogen. The thrombocyte adhesion is increased compared to untreated PEI surfaces. Conclusively, rough instead of smooth polymer or gold surfaces should be investigated as relevant models.}, language = {en} } @article{vonRuestenLangeLuetzowNeffeetal.2012, author = {von R{\"u}sten-Lange, Maik and Luetzow, Karola and Neffe, Axel T. and Lendlein, Andreas}, title = {Characterization of oligo(ethylene glycol) and oligoglycerol functionalized poly(ether imide) by angle-dependent X-ray photoelectron spectroscopy}, series = {Journal of applied biomaterials \& functional materials}, volume = {10}, journal = {Journal of applied biomaterials \& functional materials}, number = {3}, publisher = {Wichtig}, address = {Milano}, issn = {2280-8000}, doi = {10.5301/JABFM.2012.10345}, pages = {215 -- 222}, year = {2012}, abstract = {Purpose: Previous investigations have shown that poly(ether imide) (PEI) membranes can be functionalized with aminated macromolecules. In this study we explored whether the characterization of PEI functionalized with oligo(ethylene glycol) (OEG) or linear, side chain methylated oligoglycerols (OGMe), by angle-dependent X-ray induced photoelectron spectroscopy (XPS) can be used to prove the functionalization, give insight into the reaction mechanism and reveal the spatial distribution of the grafts. Methods: PEI membranes were functionalized under alkaline conditions using an aqueous solution with 2 wt\% of alpha-amino-methoxy oligo(ethylene glycol) (M-n = 1,320 g.mol(-1)) or linear, side chain methylated monoamine oligoglycerols (M-n = 1,120, 1,800 or 2,270 g.mol(-1)), respectively. The functionalized membranes were investigated using XPS measurements at different detector angles to enable comparison between the signals related to the bulk and surface volume and were compared with untreated and alkaline-treated PEI membranes. Results: While at a perpendicular detector angle the bulk signals of the PEI were prominent, at larger surface volume-related detector angles, the signals for OGMe and OEG were determinable. Conclusion: The surface functionalization of PEI with OEG and OGMe could be verified by the angle-dependent XPS. The observations proved the functionalization at the PEI surface, as the polyethers were detected at angles providing signals of the surface volume. Furthermore, the chemical functions determined verified a covalent binding via the nucleophilic addition of the amine functionalized OGMe and OEG to the PEI imide function.}, language = {en} } @book{GuenzelLiebeMerschetal.2009, author = {G{\"u}nzel, Stephan and Liebe, Michael and Mersch, Dieter and Castendyk, Oliver and Lange, Andreas and M{\"o}ller, Ingrid and Krah{\´e}, Barbara and Tobias, James and Spieler, Klaus and B{\"o}hme, Stefan and Glash{\"u}ttner, Robert and J{\"o}ckel, Sven and Dogruel, Leyla and Mosel, Michael and Quack, Sebastian and Rumbke, Leif and Walz, Steffen P.}, title = {DIGAREC Lectures 2008/09 : Vortr{\"a}ge am Zentrum f{\"u}r Computerspielforschung mit Wissenschaftsforum der Deutschen Gamestage ; Quo Vadis 2008 und 2009}, editor = {G{\"u}nzel, Stephan and Liebe, Michael and Mersch, Dieter}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-004-5}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-33324}, publisher = {Universit{\"a}t Potsdam}, pages = {256}, year = {2009}, abstract = {Der zweite Band der DIGAREC Series beinhaltet Beitr{\"a}ge der DIGAREC Lectures 2008/09 sowie des Wissenschaftsforums der Deutschen Gamestage 2008 und 2009. Mit Beitr{\"a}gen von Oliver Castendyk (Erich Pommer Institut), Stephan G{\"u}nzel mit Michael Liebe und Dieter Mersch (Universit{\"a}t Potsdam), Andreas Lange (Computerspielemuseum Berlin), Ingrid M{\"o}ller mit Barbara Krah{\´e} (Universit{\"a}t Potsdam), Klaus Spieler (Institut f{\"u}r digitale interaktive Kultur Berlin), James Tobias (University of California, Riverside), Stefan B{\"o}hme (HBK Braunschweig), Robert Glash{\"u}ttner (Wien), Sven J{\"o}ckel (Universit{\"a}t Erfurt) mit Leyla Dogruel (FU Berlin), Michael Mosel (Universit{\"a}t Marburg), Sebastian Quack (HTW Berlin), Leif Rumbke (Hamburg) und Steffen P. Walz (ETH Z{\"u}rich).}, language = {mul} } @article{HentrichTaabacheBrezesinskietal.2017, author = {Hentrich, Doreen and Taabache, Soraya and Brezesinski, Gerald and Lange, Nele and Unger, Wolfgang and Kuebel, Christian and Bertin, Annabelle and Taubert, Andreas}, title = {A Dendritic Amphiphile for Efficient Control of Biomimetic Calcium Phosphate Mineralization}, series = {Macromolecular bioscience}, volume = {17}, journal = {Macromolecular bioscience}, publisher = {Wiley-VCH}, address = {Weinheim}, issn = {1616-5187}, doi = {10.1002/mabi.201600524}, pages = {2541 -- 2548}, year = {2017}, abstract = {The phase behavior of a dendritic amphiphile containing a Newkome-type dendron as the hydrophilic moiety and a cholesterol unit as the hydrophobic segment is investigated at the air-liquid interface. The amphiphile forms stable monomolecular films at the airliquid interface on different subphases. Furthermore, the mineralization of calcium phosphate beneath the monolayer at different calcium and phosphate concentrations versus mineralization time shows that at low calcium and phosphate concentrations needles form, whereas flakes and spheres dominate at higher concentrations. Energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, and electron diffraction confirm the formation of calcium phosphate. High-resolution transmission electron microscopy and electron diffraction confirm the predominant formation of octacalcium phosphate and hydroxyapatite. The data also indicate that the final products form via a complex multistep reaction, including an association step, where nano-needles aggregate into larger flake-like objects.}, language = {en} } @article{ZehbeLangeTaubert2019, author = {Zehbe, Kerstin and Lange, Alyna and Taubert, Andreas}, title = {Stereolithography Provides Access to 3D Printed lonogels with High Ionic Conductivity}, series = {Energy Fuels}, volume = {33}, journal = {Energy Fuels}, number = {12}, publisher = {American Chemical Society}, address = {Washington}, issn = {0887-0624}, doi = {10.1021/acs.energyfuels.9b03379}, pages = {12885 -- 12893}, year = {2019}, abstract = {New ionogels (IGs) were prepared by combination of a series of sulfonate-based ionic liquids (ILs), 1-methyl-3-(4-sulfobutyl)imidazolium para-toluenesulfonate [BmimSO(3)][pTS], 1-methyl-1-butylpiperidiniumsulfonate para-toluenesul-fonate [BmpipSO(3)] [pTS], and 1-methyl-3-(4-sulfobutyl) imidazolium methylsulfonate [BmimSO(3)H][MeSO3] with a commercial stereolithography photoreactive resin. The article describes both the fundamental properties of the ILs and the resulting IGs. The IGs obtained from the ILs and the resin show high ionic conductivity of up to ca. 0.7.10(-4) S/cm at room temperature and 3.4-10(-3) S/cm at 90 degrees C. Moreover, the IGs are thermally stable to about 200 degrees C and mechanically robust. Finally, and most importantly, the article demonstrates that the IGs can be molded three-dimensionally using stereolithography. This provides, for the first time, access to IGs with complex 3D shapes with potential application in battery or fuel cell technology.}, language = {en} } @article{WojnarowskaLangeTaubertetal.2021, author = {Wojnarowska, Zaneta and Lange, Alyna and Taubert, Andreas and Paluch, Marian}, title = {Ion and proton transport in aqueous/nonaqueous acidic tonic liquids for fuel-cell applications-insight from high-pressure dielectric studies}, series = {ACS applied materials \& interfaces / American Chemical Society}, volume = {13}, journal = {ACS applied materials \& interfaces / American Chemical Society}, number = {26}, publisher = {American Chemical Society}, address = {Washington}, issn = {1944-8244}, doi = {10.1021/acsami.1c06260}, pages = {30614 -- 30624}, year = {2021}, abstract = {The use of acidic ionic liquids and solids as electrolytes in fuel cells is an emerging field due to their efficient proton conductivity and good thermal stability. Despite multiple reports describing conducting properties of acidic ILs, little is known on the charge-transport mechanism in the vicinity of liquid-glass transition and the structural factors governing the proton hopping. To address these issues, we studied two acidic imidazolium-based ILs with the same cation, however, different anions-bulk tosylate vs small methanesulfonate. High-pressure dielectric studies of anhydrous and water-saturated materials performed in the close vicinity of T-g have revealed significant differences in the charge-transport mechanism in these two systems being undetectable at ambient conditions. Thereby, we demonstrated the effect of molecular architecture on proton hopping, being crucial in the potential electrochemical applications of acidic ILs.}, language = {en} } @article{KapernaumLangeEbertetal.2022, author = {Kapernaum, Nadia and Lange, Alyna and Ebert, Max and Grunwald, Marco A. and H{\"a}ge, Christian and Marino, Sebastian and Zens, Anna and Taubert, Andreas and Gießelmann, Frank and Laschat, Sabine}, title = {Current topics in ionic liquid crystals}, series = {ChemPlusChem}, volume = {87}, journal = {ChemPlusChem}, number = {1}, publisher = {Wiley-VCH}, address = {Weinheim}, issn = {2192-6506}, doi = {10.1002/cplu.202100397}, pages = {38}, year = {2022}, abstract = {Ionic liquid crystals (ILCs), that is, ionic liquids exhibiting mesomorphism, liquid crystalline phases, and anisotropic properties, have received intense attention in the past years. Among others, this is due to their special properties arising from the combination of properties stemming from ionic liquids and from liquid crystalline arrangements. Besides interesting fundamental aspects, ILCs have been claimed to have tremendous application potential that again arises from the combination of properties and architectures that are not accessible otherwise, or at least not accessible easily by other strategies. The current review highlights recent developments in ILC research, starting with some key fundamental aspects. Further subjects covered include the synthesis and variations of modern ILCs, including the specific tuning of their mesomorphic behavior. The review concludes with reflections on some applications that may be within reach for ILCs and finally highlights a few key challenges that must be overcome prior and during true commercialization of ILCs.}, language = {en} }