A5015502482- Metal-Organic Frameworks: Synthesis and Applications
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Magnetism in coordination complexes
- Phase Equilibria and Thermodynamics
- Covalent Organic Framework Applications
- Carbon Dioxide Capture Technologies
- Advanced NMR Techniques and Applications
- Lanthanide and Transition Metal Complexes
- Hydrocarbon exploration and reservoir analysis
- Machine Learning in Materials Science
- Crystallography and molecular interactions
- Nanoplatforms for cancer theranostics
- Nuclear Physics and Applications
- Luminescence and Fluorescent Materials
- Advanced Battery Materials and Technologies
- Boron and Carbon Nanomaterials Research
- Advanced Nanomaterials in Catalysis
- Organic and Molecular Conductors Research
- Supramolecular Self-Assembly in Materials
- Advancements in Battery Materials
- Neural Networks and Applications
- Advanced Battery Technologies Research
- Nanofabrication and Lithography Techniques
- Nanocluster Synthesis and Applications
Technische Universität Dresden
2017-2023
Photon Systems Instruments (Czechia)
2022
Institute of Inorganic Chemistry of the Slovak Academy of Sciences
2019-2020
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 negative gas adsorption (NGA), a counterintuitive feature pressure amplifying materials, hitherto uniquely observed in highly porous framework compound (DUT-49). These are derived by analysing physical effects...
Switchable metal–organic frameworks (MOFs) conquer advanced applications in energy storage, sensing, gas separation, catalysis, and biomedicine. They benefit from unique adsorption characteristics responsive behavior leading to anomalously high separation selectivity deliverable storage capacity.Nanostructuring provides an effective means tailor the of switchable MOFs. The characteristic switching pressure depends on critical crystal dimensions.The understanding size effects affecting...
Although light is a prominent stimulus for smart materials, the application of photoswitches as light-responsive triggers phase transitions porous materials remains poorly explored. Here we incorporate an azobenzene photoswitch in backbone metal-organic framework producing light-induced structural contraction network parallel to gas adsorption. Light-stimulation enables non-invasive spatiotemporal control over mechanical properties framework, which ultimately leads pore and subsequent guest...
Flexible metal-organic frameworks that show reversible guest-induced phase transitions between closed and open pore phases have enormous potential for highly selective, energy-efficient gas separations. Here, we present the gate-opening process of DUT-8(Ni) selectively responds to D2, whereas no response is observed H2 HD. In situ neutron diffraction directly reveals this pressure-dependent transition. Low-temperature thermal desorption spectroscopy measurements indicate an outstanding...
Controlled nucleation in a micromixer and further crystal growth were used to synthesize Ni2(2,6-ndc)2dabco (2,6-ndc - 2,6-naphthalenedicarboxylate, dabco 1,4-diazabicyclo[2.2.2]octane), also termed DUT-8(Ni) (DUT = Dresden University of Technology), with narrow particle size distribution range few nm several μm. The was found significantly affect the switching characteristics, particular gate opening pressure nitrogen adsorption isotherms at 77 K for this highly porous flexible network....
DUT-8(Co) shows a selective structural transition for CH<sub>2</sub>Cl<sub>2</sub><italic>vs.</italic> CHCl<sub>3</sub> and CCl<sub>4</sub> at 298 K.
A highly porous metal-organic framework DUT-48, isoreticular to DUT-49, is reported with a high surface area of 4560 m2·g-1 and methane storage capacity up 0.27 g·g-1 (164 cm3·cm-3) at 6.5 MPa 298 K. The flexibility DUT-48 DUT-49 under external internal (adsorption-induced) pressure analyzed rationalized using combination advanced experimental computational techniques. While both networks undergo contraction by mechanical pressure, only shows adsorption-induced structural transitions...
The origin of crystal-size-dependent adsorption behavior flexible metal-organic frameworks is increasingly studied. In this contribution, we probe the solid-fluid interactions DUT-49 crystals different size by
Chemiresistive threshold sensor films based on the switchable metal–organic framework (MOF) MIL-53(Al) (MIL = Matériaux de l'Institut Lavoisier) and conductive carbon additives were developed, characterized successfully applied for selective detection of CO2 in mixtures with methane at high pressure (up to 25 bar). Two transitions crystal structure, from lp (large pore) form np (narrow partial below 0.5 bar back ca. 6 bar, also known as "breathing", result two detectable stepwise resistance...
We characterise the elastic properties of molecular building blocks and how they impact mechanical soft porous crystals.
Variation of the crystallite size in flexible porous coordination polymers can significantly influence or even drastically change flexibility characteristics. The impact crystal morphology, however, on dynamic properties metal-organic frameworks (MOFs) is poorly investigated so far. In present work, we systematically modulated particle a model gate pressure MOF (DUT-8(Ni), Ni
Switchable metal-organic frameworks (MOFs) change their structure in time and selectively open pores adsorbing guest molecules, leading to highly selective separation, pressure amplification, sensing, actuation applications. The 3D engineering of MOFs has reached a high level maturity, but spatiotemporal evolution opens new perspective toward materials the 4th dimension (time) by t-axis design, essence exploiting deliberate tuning activation barriers. This work demonstrates first example...
In the market for next-generation energy storage, lithium-sulfur (Li-S) technology is one of most promising candidates due to its high theoretical specific and cost-efficient ubiquitous active materials. this study, cell system was combined with a sustainable solvent-free electrode dry-coating process (DRYtraec®). So far, has been only feasible polytetrafluoroethylene (PTFE)-based binders. To increase sustainability processing decrease undesired fluorine content Li-S batteries, renewable,...
Metal-organic frameworks (MOFs) have emerged as promising candidates for CO
Controlling the adsorption behavior of switchable porous materials is essential to pave way for their successful implementation in highly selective separation and sensing applications. The MOF M2(2,6-ndc)2(dabco) (DUT-8(M), where DUT = Dresden University Technology, 2,6-ndc naphthalene dicarboxylate, dabco 1,4-diazabicyclo-[2.2.2]-octane, M Ni Co) shows distinct differences gating depending on transition metal node. Both DUT-8(Ni) DUT-8(Co) transform into closed pore phase after solvent...
The main factors affecting switchability are identified for DUT-8(Zn): energetics of the host, particle size, and desolvation stress. They influence flexible behaviour to same order magnitude should be always considered collectively.
Two different strategies of amine assisted delamination 2D MOFs were developed.
We present a toolbox for the rapid characterisation of powdered samples paramagnetic metal-organic frameworks at natural abundance by 1 H-detected solid-state NMR. Very fast MAS rates room and cryogenic temperatures set tailored radiofrequency irradiation schemes help overcome sensitivity resolution limits often associated with MOF materials. demonstrate approach on DUT-8(Ni), framework containing Ni2+ paddle-wheel units which can exist in two markedly different architectures. Resolved H 13...
The nature of metal in the isomorphous flexible DUT-8( M ) ([ 2 (2,6-ndc) (dabco)] n MOFs influences flexibility, leading to gate opening behaviour if = Ni, Co, or Zn and breathing Cu.