Christof Wöll
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View article: Surface-anchored, oriented, monolithic Metal–Organic framework thin films: Surface and interface phenomena in crystalline MOF architectures
Surface-anchored, oriented, monolithic Metal–Organic framework thin films: Surface and interface phenomena in crystalline MOF architectures Open
View article: Advancing Electronic Application of Coordination Solids: Enhancing Electron Transport and Device Integration via Surface‐Mounted MOFs (SURMOFs)
Advancing Electronic Application of Coordination Solids: Enhancing Electron Transport and Device Integration via Surface‐Mounted MOFs (SURMOFs) Open
The layer‐by‐layer (LbL) assembly of coordination solids, enabled by the surface‐mounted metal–organic framework (SURMOF) platform, yields thin films with well‐defined orientation, tunable thickness, low density of defects, and editable cr…
View article: Application of Neural Networks for Advanced Ir Spectroscopy Characterization of Ceria Catalysts Surfaces
Application of Neural Networks for Advanced Ir Spectroscopy Characterization of Ceria Catalysts Surfaces Open
This study presents a novel convolutional neural network (CNN) architecture that represents a significant advancement in the unsupervised analysis of data from infrared (IR) spectroscopy, both in IRRAS (infrared reflection absorption spect…
View article: Addressing standardization and semantics in an electronic lab notebook for multidisciplinary use: LabIMotion
Addressing standardization and semantics in an electronic lab notebook for multidisciplinary use: LabIMotion Open
View article: Enhancing Optoelectronic Properties in Phthalocyanine‐Based SURMOFs: Synthesis of ABAB Linkers by Avoiding Statistical Condensation with Tailored Building Blocks
Enhancing Optoelectronic Properties in Phthalocyanine‐Based SURMOFs: Synthesis of ABAB Linkers by Avoiding Statistical Condensation with Tailored Building Blocks Open
Phthalocyanine (PC)‐based metal–organic frameworks (MOFs) hold substantial promise for applications in energy storage, sensing, and catalysis due to their robust stability and enhanced electron transfer capabilities. However, synthesizing …
View article: The Role of Surface Hydroxyls in Dehydration and Dehydrogenation of Formic Acid on Fe3O4(001)
The Role of Surface Hydroxyls in Dehydration and Dehydrogenation of Formic Acid on Fe3O4(001) Open
Understanding the role of surface structure and hydroxylation in catalytic reactions on metal oxide surfaces is important for developing a mechanistic insight into the complex interface processes. Here, we investigate the reactivity of for…
View article: Dirac-cone induced metallic conductivity in Cu<sub>3</sub>(HHTP)<sub>2</sub>: high-quality MOF thin films fabricated <i>via</i> ML-driven robotic synthesis
Dirac-cone induced metallic conductivity in Cu<sub>3</sub>(HHTP)<sub>2</sub>: high-quality MOF thin films fabricated <i>via</i> ML-driven robotic synthesis Open
Machine learning-guided robotic synthesis enables fabrication of high-quality Cu 3 (HHTP) 2 SURMOFs exhibiting intrinsic metallic conductivity—marked by increasing conductivity upon cooling—paving the way for investigating quantum phenomen…
View article: ML-Based XPS Quantification Supported by Synthetic Dataset Generation
ML-Based XPS Quantification Supported by Synthetic Dataset Generation Open
With growing interest in laboratory automation and high-throughput systems, the amount of generated experimental data is rapidly increasing while analysis methods still require many manual work hours from experts. This is prevalent in X-ra…
View article: Addressing Standardization and Semantics in an Electronic Lab Notebook for Multidisciplinary Use: LabIMotion
Addressing Standardization and Semantics in an Electronic Lab Notebook for Multidisciplinary Use: LabIMotion Open
This work presents the LabIMotion extension for the Chemotion Electronic Lab Notebook (ELN), expanding its capabilities from organic chemistry to support interdisciplinary research and enabling the description of workflows. LabIMotion enha…
View article: Functionalization of monolithic MOF thin films with hydrocarbon chains to achieve superhydrophobic surfaces with tunable water adhesion strength
Functionalization of monolithic MOF thin films with hydrocarbon chains to achieve superhydrophobic surfaces with tunable water adhesion strength Open
Grafting hydrophobic hydrocarbon chains to the outer surface of a MOF thin film with well-defined spacing induces entropy-driven superhydrophobic performance.
View article: Regulated Charge Transfer in Donor‐Acceptor Metal–Organic Frameworks for Highly‐Sensitive Photodetectors
Regulated Charge Transfer in Donor‐Acceptor Metal–Organic Frameworks for Highly‐Sensitive Photodetectors Open
In photo‐induced charge separation, organic thin films with donor and acceptor chromophores are vital for uses such as artificial photosynthesis and photodetection. The main challenges include optimizing charge separation efficiency and id…
View article: Geregelter Ladungstransfer in metallorganischen Donor‐Akzeptor‐Gerüstverbindungen für hochempfindliche Photodetektoren
Geregelter Ladungstransfer in metallorganischen Donor‐Akzeptor‐Gerüstverbindungen für hochempfindliche Photodetektoren Open
Bei der photoinduzierten Ladungstrennung sind organische Dünnschichten mit Donor‐ und Akzeptor‐Chromophoren für Anwendungen wie künstliche Photosynthese und Photodetektion von entscheidender Bedeutung. Eine der größten Herausforderungen is…
View article: Dynamic control and quantification of active sites on ceria for CO activation and hydrogenation
Dynamic control and quantification of active sites on ceria for CO activation and hydrogenation Open
Ceria (CeO2) is a widely used oxide catalyst, yet the nature of its active sites remains elusive. This study combines model and powder catalyst studies to elucidate the structure-activity relationships in ceria-catalyzed CO acti…
View article: Atomically Smooth Fully Hydroxylated CeO<sub>2</sub>(001) Films on YSZ(001)
Atomically Smooth Fully Hydroxylated CeO<sub>2</sub>(001) Films on YSZ(001) Open
View article: Surface Structure and Chemistry of CeO<sub>2</sub> Powder Catalysts Determined by Surface-Ligand Infrared Spectroscopy (SLIR)
Surface Structure and Chemistry of CeO<sub>2</sub> Powder Catalysts Determined by Surface-Ligand Infrared Spectroscopy (SLIR) Open
ConspectusCerium is the most abundant rare earth element in the Earth's crust. Its most stable oxide, cerium dioxide (CeO2, ceria), is increasingly utilized in the field of catalysis. It can catalyze redox and acid-base reaction…
View article: Integrating Biocatalysts into Metal‐Organic Frameworks: Disentangling the Roles of Affinity, Molecular Weight, and Size
Integrating Biocatalysts into Metal‐Organic Frameworks: Disentangling the Roles of Affinity, Molecular Weight, and Size Open
The integration of biocatalysts within metal‐organic frameworks (MOFs) is attracting growing interest due to its potential to both enhance biocatalyst stability and sustain biocatalyst activity in organic solvents. However, the factors tha…
View article: Boosting CO2 separation in porphyrinic MOF-based mixed matrix membranes via central metal atom integration
Boosting CO2 separation in porphyrinic MOF-based mixed matrix membranes via central metal atom integration Open
As atmospheric CO2 levels continue to rise, contributing to the climate crisis, there is an increasing urgency to separate this gas from others and to expedite related research. Metal-Organic Frameworks (MOFs), known for their porosity and…
View article: Infrared Reflection-Absorption Spectroscopy (IRRAS) applied to oxides: Ceria as a case study
Infrared Reflection-Absorption Spectroscopy (IRRAS) applied to oxides: Ceria as a case study Open
Infrared Reflection-Absorption Spectroscopy (IRRAS), a pivotal tool in the study of the surface chemistry of metals, has recently also gained substantial impact for oxide surfaces, despite the inherent challenges originating from their die…
View article: Large language models in electronic laboratory notebooks: Transforming materials science research workflows
Large language models in electronic laboratory notebooks: Transforming materials science research workflows Open
In recent years, there has been a surge in research efforts dedicated to harnessing the capabilities of Large Language Models (LLMs) in various domains, particularly in material science. This paper delves into the transformative role of LL…
View article: Cover Picture: Structure and Chemical Reactivity of Y‐Stabilized ZrO<sub>2</sub> Surfaces: Importance for the Water‐Gas Shift Reaction (Angew. Chem. Int. Ed. 27/2024)
Cover Picture: Structure and Chemical Reactivity of Y‐Stabilized ZrO<sub>2</sub> Surfaces: Importance for the Water‐Gas Shift Reaction (Angew. Chem. Int. Ed. 27/2024) Open
Zirconia, essential for fuel cells and catalysis, but also prevalent in fashion jewelry (cover imgage, center), is studied in a Research Article (e202404775) by Yuemin Wang, Christof Wöll et al. The research bridges substantial gaps in pre…
View article: Titelbild: Struktur und chemische Reaktivität von Yttrium‐stabilisierten ZrO<sub>2</sub>‐Oberflächen: Zur Bedeutung für die Wassergas‐Shift‐Reaktion (Angew. Chem. 27/2024)
Titelbild: Struktur und chemische Reaktivität von Yttrium‐stabilisierten ZrO<sub>2</sub>‐Oberflächen: Zur Bedeutung für die Wassergas‐Shift‐Reaktion (Angew. Chem. 27/2024) Open
Zirconia, essential for fuel cells and catalysis, but also prevalent in fashion jewelry (cover imgage, center), is studied in a Research Article (e202404775) by Yuemin Wang, Christof Wöll et al. The research bridges substantial gaps in pre…
View article: Highly Active Oxidation Catalysts through Confining Pd Clusters on CeO<sub>2</sub> Nano‐Islands
Highly Active Oxidation Catalysts through Confining Pd Clusters on CeO<sub>2</sub> Nano‐Islands Open
CeO 2 ‐supported noble metal clusters are attractive catalytic materials for several applications. However, their atomic dispersion under oxidizing reaction conditions often leads to catalyst deactivation. In this study, the noble metal cl…
View article: Highly Active Oxidation Catalysts through Confining Pd Clusters on CeO<sub>2</sub> Nano‐Islands
Highly Active Oxidation Catalysts through Confining Pd Clusters on CeO<sub>2</sub> Nano‐Islands Open
CeO 2 ‐supported noble metal clusters are attractive catalytic materials for several applications. However, their atomic dispersion under oxidizing reaction conditions often leads to catalyst deactivation. In this study, the noble metal cl…
View article: Enhancing the Quality of MOF Thin Films for Device Integration Through Machine Learning: A Case Study on HKUST‐1 SURMOF Optimization
Enhancing the Quality of MOF Thin Films for Device Integration Through Machine Learning: A Case Study on HKUST‐1 SURMOF Optimization Open
Metal–organic Frameworks (MOFs), especially as thin films, are increasingly recognized for their potential in device integration, notably in sensors and photo detectors. A critical factor in the performance of many MOF‐based devices is the…
View article: Investigation of MOF-525 and post-metalated MOF-525 as nanofillers in mixed matrix membranes for CO2 separation
Investigation of MOF-525 and post-metalated MOF-525 as nanofillers in mixed matrix membranes for CO2 separation Open
Over the past twenty years, metal-organic frameworks (MOFs) have emerged as extensively developed porous class of materials and are increasingly recognized as promising candidates for membrane-based CO2 separation. This potential primarily…
View article: Determining Structures of Layer‐by‐Layer Spin‐Coated Zinc Dicarboxylate‐Based Metal‐Organic Thin Films
Determining Structures of Layer‐by‐Layer Spin‐Coated Zinc Dicarboxylate‐Based Metal‐Organic Thin Films Open
Thin films of crystalline solids with substantial free volume built from organic chromophores and metal secondary building units (SBUs) are promising for engineering new optoelectronic properties through control of interchromophore couplin…
View article: Atomically smooth CeO2(001) films on YSZ(001)
Atomically smooth CeO2(001) films on YSZ(001) Open
CeO2 is a non-inert support material for heterogeneous catalysis applications. Here, we present a facile growth procedure for the preparation of CeO2(0 0 1) thin films supported by YSZ(0 0 1) suitable for combined catalytic and structural …
View article: Polarization-dependent effects in vibrational absorption spectra of 2D finite-size adsorbate islands on dielectric substrates
Polarization-dependent effects in vibrational absorption spectra of 2D finite-size adsorbate islands on dielectric substrates Open
In the last years, Infrared Reflection-Absorption Spectroscopy (IRRAS) became a standard technique to study vibrational excitations of molecules. These investigations are strongly motivated by perspective applications in monitoring chemica…
View article: Optimized Detection of Volatile Organic Compounds Utilizing Durable and Selective Arrays of Tailored UiO-66-X SURMOF Sensors
Optimized Detection of Volatile Organic Compounds Utilizing Durable and Selective Arrays of Tailored UiO-66-X SURMOF Sensors Open
Metal-organic frameworks (MOFs), with their well-defined and highly flexible nanoporous architectures, provide a material platform ideal for fabricating sensors. We demonstrate that the efficacy and specificity of detecting and differentia…
View article: Spatiotemporal insights into forced dynamic reactor operation for fast light-off of Pd-based methane oxidation catalysts
Spatiotemporal insights into forced dynamic reactor operation for fast light-off of Pd-based methane oxidation catalysts Open
Spatial profiling uncovers axial gradients in a monolithic methane oxidation catalyst during dynamic operation, which enables a substantial activity enhancement.