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Articles by Simon Krause
Hohe Mieten, leere Büros - im Donut-Effekt steckt eine große Chance
Zwei Krisen prägen unsere Städte: Wohnungsnot und Büroleerstand. In den großen Städten sind die Neuvertragsmieten seit 2013 um rund 75 Prozent gestiegen; viele Menschen können sich einen Umzug in eine neue Wohnung nicht mehr leisten. Gleichzeitig bleiben durch Homeoffice und ein verändertes Konsumverhalten immer mehr Büros und Geschäfte leer. Unsere Städte leiden unter dem Donut-Effekt: Die Innenstädte werden ausgehöhlt, während die Ränder wachsen.
Haushalt 2025 : Was wir aus der Förderung des Breitbandausbaus lernen können
Mit dem neuen Sondervermögen in Höhe von 500 Milliarden Euro wächst die Versuchung, bisher aus dem Bundeskernhaushalt finanzierte Projekte ins Sondervermögen zu verschieben, um an anderer Stelle Spielraum zu gewinnen. Interessant wird es in Bereichen, in denen auch private Anbieter aktiv sind, zum Beispiel im Energiesektor oder beim Ausbau digitaler Netze. Hier stellt sich die Frage: Braucht es überhaupt staatliche Unterstützung oder regelt das der Markt?
Dynamic breathing behaviour of the titanium-based metal-organic framework NTU-9 upon adsorption of water and organic solvents
Dynamic breathing behaviour of the titanium-based metal-organic framework NTU-9 upon adsorption of water and organic solvents Understanding the structural response of framework materials to external stimuli has been of great interest. However, little is known about the stimuli responsiveness of titanium-based metal-organic frameworks.
Synthesis of micrometre-thick oriented 2D covalent organic framework films by a kinetic polymerization pathway - Nature Synthesis
Abstract Despite advances in the field of 2D polymerization, the synthesis of high-quality, micrometre-thick films of oriented 2D covalent organic frameworks (COFs) remains challenging. Conventional approaches focusing on thermodynamic control of the polymerization pathway face a detrimental trade-off between orientation and thickness.
Negative gas adsorption transitions and pressure amplification phenomena in porous frameworks
Nanoporous solids offer a wide range of functionalities for industrial, environmental, and energy applications. However, only a limited number of porous materials are responsive, i.e. the nanopore dynamically alters its size and shape in response to external stimuli such as temperature, pressure, light or the presence of specific molecular stimuli adsorbed inside the voids deforming the framework.
Strategies to achieve reproducible synthesis of phase-pure Zr-porphyrin metal-organic frameworks - Communications Materials
Abstract Porphyrin-based metal-organic frameworks (MOFs) are gaining traction for various applications due to their sorption, optoelectronic and catalytic properties. MOFs with Zr-based nodes constitute a particularly robust and versatile class of MOFs in which incorporation of metals into the porphyrin core allows further tuning of their physico-chemical properties. However, significant challenges regarding the phase-pure synthesis of Zr-porphyrin MOFs have slowed down progress in the field.
Active Site Engineering in Reticular Covalent Organic Frameworks for Photocatalytic CO2 Reduction (Adv. Funct. Mater. 43/2024)
Bettina Valeska Lotsch Max Planck Institute for Solid State Research, Heisenbergstraße 1, 70569 Stuttgart, Germany Department of Chemistry, Ludwig-Maximilians-Universität (LMU), Butenandtstr. 5-13, 81377 Munich, Germany e-conversion, Lichtenbergstrasse 4a, 85748 Garching, Germany Search for more papers by this author
Dynamic two-dimensional covalent organic frameworks - Nature Chemistry
Abstract Porous covalent organic frameworks (COFs) enable the realization of functional materials with molecular precision. Past research has typically focused on generating rigid frameworks where structural and optoelectronic properties are static. Here we report dynamic two-dimensional (2D) COFs that can open and close their pores upon uptake or removal of guests while retaining their crystalline long-range order.
Active Site Engineering in Reticular Covalent Organic Frameworks for Photocatalytic CO2 Reduction
1 Introduction With ever increasing industrial development, our heavy reliance on fossil fuels for energy production has led to an explosive surge in CO2 emission causing serious global warming and environmental issues.[1-3] The recent Intergovernmental Panel on Climate Change (IPCC) report has highlighted the severity of such problems pertaining to global health and called for immediate action for the mitigation of climate change.
Functional dynamics in framework materials - Communications Chemistry
Abstract Dynamic crystalline materials have emerged as a unique category of condensed phase matter that combines crystalline lattice with components that display dynamic behavior in the solid state. This has involved a range of materials incorporating dynamic functional units in the form of stimuli-responsive molecular switches and machines, among others.
On the role of history-dependent adsorbate distribution and metastable states in switchable mesoporous metal-organic frameworks - Nature Communications
Abstract A unique feature of metal-organic frameworks (MOFs) in contrast to rigid nanoporous materials is their structural switchabilty offering a wide range of functionality for sustainable energy storage, separation and sensing applications. This has initiated a series of experimental and theoretical studies predominantly aiming at understanding the thermodynamic conditions to transform and release gas, but the nature of sorption-induced switching transitions remains poorly understood.
Active Separation of Water Isotopologues by Local Molecular Motion in Microporous Framework Materials
Graphical Abstract Highlight of a recent work from Su et al. on the separation of water isotopologues. Dynamic pore windows are created in a porous coordination polymer based on ligand flipping. Adsorption experiments show that the dynamic pore windows favor kinetic adsorption of H2O over D2O for unprecedented water isotopologue separation selectivity. Abstract Around 10–15 % of the world's energy consumption is accounted for by the separation and purification of chemicals.
Cooperative light-induced breathing of soft porous crystals via azobenzene buckling - Nature Communications
Abstract Although light is a prominent stimulus for smart materials, the application of photoswitches as light-responsive triggers for phase transitions of porous materials remains poorly explored. Here we incorporate an azobenzene photoswitch in the backbone of a metal-organic framework producing light-induced structural contraction of the porous network in parallel to gas adsorption.
Charting the Complete Thermodynamic Landscape of Gas Adsorption for a Responsive Metal-Organic Framework
Download Hi-Res ImageDownload to MS-PowerPointCite This:J. Am. Chem. Soc. 2021, XXXX, XXX RETURN TO ARTICLES ASAPPREVCommunicationNEXT Ruben Goeminne Ruben Goeminne Center for Molecular Modeling, Ghent University, Tech Lane, Ghent Science Park Campus A, 9052 Zwijnaarde, Belgium , Simon Krause, Stefan Kaskel Stefan Kaskel Department of Inorganic Chemistry, Technische Universität Dresden Bergstraße 66, 01062 Dresden, Germany , Toon Verstraelen*, and Jack D.
Massive pressure amplification by stimulated contraction of mesoporous frameworks
Communication Volodymyr Bon Corresponding Author volodymyr.bon@tu-dresden.de Technische Universitat Dresden, Anorganische Chemie I, Bergstraße 66, 01069 Dresden, GERMANY Search for more papers by this author PDF ShareShare Abstract Herein we demonstrate mesoporous frameworks interacting with carbon dioxide leading to stimulated structural contractions and massive out‐of‐equilibrium pressure amplification well beyond ambient pressure.
Massive Pressure Amplification by Stimulated Contraction of Mesoporous Frameworks**
Abstract Herein we demonstrate mesoporous frameworks interacting with carbon dioxide leading to stimulated structural contractions and massive out‐of‐equilibrium pressure amplification well beyond ambient pressure. Carbon dioxide, a non‐toxic and non‐flammable working medium, is promising for the development of pressure‐amplifying frameworks for pneumatic technologies and safety systems.
The role of temperature and adsorbate on negative gas adsorption transitions of the mesoporous metal-organic framework DUT-49
The role of temperature and adsorbate on negative gas adsorption transitions of the mesoporous metal–organic framework DUT-49† Simon Krause, *ab Jack D. Evans, *a Volodymyr Bon, a Irena Senkovska,a François-Xavier Coudert, c Daniel M.
Cave Story+ kostenlos im Epic Games Store erhältlich
Home > Digital Life > Gaming & eSport 2553181 04.12.2020 | 12:35 Uhr | Simon Krause Simon Krause Auch diese Woche gibt es wieder ein kostenloses Spiel bei Epic Games. Dieses Mal: "Cave Story+" im Wert von 9,99€ Vergrößern Cave Story+ diese Woche gratis im Epic Games Store © Epic Games Das Spiel "Cave Story+" im Wert von 9,99€ ist wohl eines der bekanntesten Indiespiele aller Zeiten. Das 2004 erstmals erschienene Game erlangte über die Jahre einen Kult-Status.
Vodafone kündigt Kinder-Smartwatch mit Disney-Motiven an
Home > Computer & Technik > PC & Peripherie 2552902 03.12.2020 | 13:39 Uhr | Simon Krause Simon Krause Vodafone hat in Zusammenarbeit mit Disney die Smartwatch Neo angekündigt: eine intelligente Uhr speziell für Kinder.
Nintendo Switch Update 11.0.0 kommt mit vielen Verbesserungen
Home > Digital Life > Gaming & eSport 2552368 01.12.2020 | 16:16 Uhr | Simon Krause Simon Krause Das Nintendo Switch Update 11.0.0 erhält aktuell jeder Switch-Besitzer. Hier alle Verbesserungen. Eines der neuen Features des jetzt erschienenen Updates 11.0.0 für die Switch-Systemsoftware: Über die Speicherdaten-Cloud können nun auch mehrere Switch-Konsolen mit einem Account verknüpft werden, um die gleichen Spiele auf verschiedenen Konsolen zu spielen.
25 Euro gespart: Mudrunner gratis im Epic Games Store
Home > Digital Life > Gaming & eSport 2551473 28.11.2020 | 11:28 Uhr | Simon Krause Simon Krause Ein neues kostenloses Spiel wartet im Epic Store. Dieses Mal: Die Offroad-Simulation "Mudrunner" im Wert von 25 Euro. Vergrößern "Mudrunner" jetzt gratis im Epic Games Store © Focus Home Interactive Epic Games verschenkt eine Woche lang ds Spiel " Mudrunner ". Spieler können sich das Offroad-Simulations-Spiel bis zum 3.
Neu auf Netflix im Dezember 2020: Alle Highlights im Ãœberblick
Home > Computer & Technik > Internet & Tarife > Online 2550454 25.11.2020 | 14:34 Uhr | Simon Krause Simon Krause Im Dezember starten wieder eine Reihe von Filmen und Serien auf Netflix. Darunter die deutsche Produktion "Wir können nicht anders". Vergrößern Der deutsche Netflix-Film "Wir können nicht anders" started am 4. Dezember © Netflix Zu den Dezember-Highlights bei Netflix gehört auch der deutsche Netflix Original Film " Wir können nicht anders ", welcher ab dem 4.
Engineering micromechanics of soft porous crystals for negative gas adsorption
Engineering micromechanics of soft porous crystals for negative gas adsorption† Simon Krause, *ab Jack D. Evans, *a Volodymyr Bon, a Irena Senkovska,a Sebastian Ehrling, a Paul Iacomi, ce Daniel M. Többens,d Dirk Wallacher, d Manfred S. Weiss, d Bin Zheng, ef Pascal G. Yot, e Guillaume Maurin, e Philip L.
Chemistry of Soft Porous Crystals: Structural Dynamics and Gas Adsorption Properties
Minireview Dr. Simon Krause Corresponding Author E-mail address: simon.krause@rug.nl Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands Search for more papers by this author Prof.
The Role of Temperature and Adsorbate on Negative Gas Adsorption in the Mesoporous Metal-Organic Framework DUT-49
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Visible Light Driven Rotation of Molecular Motors in a Dual-Function Metal Organic Framework Enabled by Energy Transfer
Download Hi-Res ImageDownload to MS-PowerPointCite This:J. Am. Chem. Soc. 2020, XXXX, XXX RETURN TO JUST ACCEPTED MANUSCRIPTSPREVArticleNEXT Wojciech Danowski Fabio Castiglioni Andy Sardjan Simon Krause Lukas Pfeifer Diederik Roke Angiolina Comotti Wesley R. Browne Ben L. Feringa LEARN ABOUT THESE METRICS Article Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals.
Cooperative and synchronized rotation in motorized porous frameworks: impact on local and global transport properties of confined fluids
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Towards general network architecture design criteria for negative gas adsorption transitions in ultraporous frameworks
Abstract Switchable metal-organic frameworks (MOFs) have been proposed for various energy-related storage and separation applications, but the mechanistic understanding of adsorption-induced switching transitions is still at an early stage. Here we report critical design criteria for negative gas adsorption (NGA), a counterintuitive feature of pressure amplifying materials, hitherto uniquely observed in a highly porous framework compound (DUT-49).
New insights into solvent-induced structural changes of 13C labelled metal-organic frameworks by solid state NMR
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Exploring the thermodynamic criteria for responsive adsorption processes
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Solvent-Free Synthesis of a Porous Thiophene Polymer by Mechanochemical Oxidative Polymerization
This study elucidates a mechanochemical synthesis pathway towards a microporous thiophene polymer via an oxidative polymerization. Utilizing a design of experiments approach we developed a synthesis inside a planetary ball mill leading to complete conversion and a porous polymer with a surface area of up to 1850 m2g-1 - almost twice as high as the conventional material prepared by solution-based polymerization.
The effect of crystallite size on pressure amplification in switchable porous solids
All materials and gases used in the synthesis and analysis of DUT-49 samples were of high purity. Cu(NO ) ·3H O (Sigma Aldrich, 99.5%), N-methyl-2-pyrrolidone (NMP) (AppliChem, 99%), anhyd. deuterated dimethyl sulfoxide (DMSO; Sigma Aldrich, 99.9%), DCl in D O 35 wt.% (Sigma Aldrich, 99%) and anhyd. ethanol (VWR Prolabo, 99%) were used for the synthesis of DUT-49 (C H N O Cu ).
Influence of Precursor Porosity on Sodium and Sulfur Promoted Iron/Carbon Fischer-Tropsch Catalysts derived from Metal-Organic Frameworks
Iron-based metal-organic frameworks (MOFs) with varying porosity are converted by pyrolysis into iron/carbon catalysts with predetermined composition and tailored pore structural features for the Fischer-Tropsch synthesis of lower C -C olefins. Significantly higher activity arises for catalysts with higher porosity and decreased iron particle size derived from hierarchical MOF xerogel/aerogel precursors as compared to a purely microporous MOF.
Tailoring adsorption induced phase transitions in the pillared-layer type metal-organic framework DUT-8(Ni).
Tailoring the characteristics of gating transitions in the porous network, Ni (2,6-ndc) dabco (ndc = naphthalenedicarboxylate, dabco = 1,4-diazabicyclo[2.2.2]octane), also termed DUT-8(Ni) (DUT = Dresden University of Technology), was achieved by systematically adjusting the critical synthesis parameters. The impact of the starting composition and solvent mixtures in the synthesis was found to critically affect the guest-response properties of the obtained materials.
German Indoor Lacrosse National Team
The eagle has landed and Team Germany has made it safely to Syracuse, NY to prepare and compete at the World Indoor Lacrosse Championships.
Support German Indoor Lacrosse National Team
The German Indoor Lacrosse National Team will compete on the international stage for the first time at the World Indoor Lacrosse Championships 2015 in Syracuse, USA. The program was only founded in 2014 and is the first step towards growing and improving boxlacrosse in Germany. The vast majority of players picked up and plays lacrosse in Germany and for most of them it will be the first trip to the USA.
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