publikace
Smart Materials for Water Purification: A New Catalyst Breaks Down Pharmaceutical Residues Even Without Light
The study explores the underlying mechanisms that allow this dual-function catalyst to work both in light and in darkness – without external energy input. The material combines copper, manganese, and titanium oxides to initiate two distinct degradation pathways. It decomposes diclofenac within minutes, offering a promising strategy for sustainable water treatment. The results were published […]
Hungarian Mine Green”, a Semi-Natural Copper Pigment From Banská Bystrica Region (Slovakia) – Analytical Evidence and Laboratory Replication
This study presents the results of a comprehensive investigation of the “Hungarian mine green” pigment which was precipitated from drainage water containing basic Cu sulfates and represented an important commodity with the peak of its production in 16th and 17th century in Banská Bystrica region (Slovakia). Morphological and compositional fingerprints of this pigment have been […]
High Temperature Interactions of Lead Palmitate with Linseed Oil
This study reveals that heating lead palmitate in linseed oil leads to the formation of mixed lead palmitate–stearate compounds and a metastable high-temperature polymorph with unique structural features. These transformations, even at moderate heating, suggest complex chemical changes that may contribute to long-term degradation in oil paintings. The findings emphasize the need for careful temperature […]
Cationic Polyhedral Chalcogenaboranes: Activation without breaking Wade’s Rules
This study reports the first cationic chalcogenaboranes that retain the same skeletal electron pair count as their neutral counterparts, defying Wade’s rules. The ionization significantly enhances their electrophilicity, enabling reactions with very weak bases. Furthermore, it allows for regioselective control over interactions with hard and soft bases by modulating the LUMO. https://onlinelibrary.wiley.com/doi/10.1002/anie.202419677
Site-specific substitution in atomically precise carboranethiol-protected nanoclusters and concomitant changes in electronic properties
This study presents the synthesis and structural modification of a silver-based nanocluster [Ag17(o1-CBT)12]3- (Ag17) by incorporating Au and Cu at specific sites, forming AuAg16, Ag13Cu4, and AuAg12Cu4. These modifications systematically alter their structural, electronic, and optical properties, with Au stabilizing the core and Cu enhancing photoluminescence and prolonging excited-state lifetimes. The study demonstrates a tunable […]
Expanding Luminescence Horizons in Macropolyhedral Heteroboranes
The macropolyhedral compound anti-B18H22 was long thought to be the only boron hydride compound that exhibited fluorescence when illuminated with ultraviolet light. We have recently shown that new and, indeed, some previously known macropolyhedral compounds, containing sulphur or selenium, and exhibiting a wide range of structural types, possess luminescent properties. https://onlinelibrary.wiley.com/doi/full/10.1002/ange.202401872
Trace and Minor Element Analysis of Azurite Blues in Fine Arts: Possibilities and Limitations in Provenance Studies
This study investigates azurite (and malachite) pigments from important European deposits with special focus on their trace elemental composition. Using advanced analytical techniques, researchers discovered that specific trace elements, such as rare earth elements or uranium, can be key indicators of pigment provenance. These findings were applied to historical artworks, revealing that the overall trace […]
Experimental and Computational 77Se NMR Spectroscopic Study on Selenaborane Cluster Compounds
The study investigates the correlation between calculated and measured 77Se NMR chemical shifts in various selenaborane cluster compounds, showing that low-level quantum chemical calculations can reliably predict these shifts. This predictive ability helps in understanding the molecular structure of selenaboranes and efficiently locating 77Se resonances in experimental data. The findings highlight how accurate prediction of […]