Michal Langer
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View article: Visible‐Light Photoswitchable Covalent Tetra‐ <i>Ortho</i> ‐Fluoro‐Azobenzene Carbon Nanodot Hybrids for Optostimulation
Visible‐Light Photoswitchable Covalent Tetra‐ <i>Ortho</i> ‐Fluoro‐Azobenzene Carbon Nanodot Hybrids for Optostimulation Open
Carbon nanodots (CNDs) have attracted growing interest due to their potential applications in sensing, imaging, and optically controlled bio‐applications. Herein, the covalent functionalization of citric acid/ethylenediamine‐based CNDs wit…
View article: Periodic Table Exploration of MXenes for Efficient Electrochemical Nitrate Reduction to Ammonia
Periodic Table Exploration of MXenes for Efficient Electrochemical Nitrate Reduction to Ammonia Open
Applying electrochemical nitrate reduction reaction (NO 3 RR) to produce ammonia offers a sustainable alternative to the energy‐intensive Haber‐Bosch process, which is crucial for clean energy and agricultural applications. While 2D MXenes…
View article: Functionalization of Hydrophilic and Amphiphilic Carbon Dots with Polyethylene Glycol for Electroluminescent Devices
Functionalization of Hydrophilic and Amphiphilic Carbon Dots with Polyethylene Glycol for Electroluminescent Devices Open
Carbon dots (CDs) are fluorescent carbon nanomaterials that are considered for applications in optoelectronics, sensorics, and biofields due to their low‐cost and robust synthesis, and versatile optical properties. Herein, it is demonstrat…
View article: Photoexcited Species Localize on Solvent-Accessible-Fluorophore Rich Domains inside Carbon Dots
Photoexcited Species Localize on Solvent-Accessible-Fluorophore Rich Domains inside Carbon Dots Open
View article: Electrochemical nitrate reduction to ammonia using laser-processed Nb<sub>2</sub>AlC: the role of effective Al etching
Electrochemical nitrate reduction to ammonia using laser-processed Nb<sub>2</sub>AlC: the role of effective Al etching Open
Laser processing of Nb 2 AlC, followed by an electrochemical etching approach, produces NbO x -Gr electrodes for electrochemical nitrate reduction to ammonia.
View article: Covalent carbon nanodot-azobenzene hybrid photoswitches: the impact of <i>meta</i>/<i>para</i> connectivity and sp<sup>3</sup> spacer on photophysical properties
Covalent carbon nanodot-azobenzene hybrid photoswitches: the impact of <i>meta</i>/<i>para</i> connectivity and sp<sup>3</sup> spacer on photophysical properties Open
Covalent functionalization of carbon nanodots with azobenzenes yields fluorescent, photoresponsive hybrids. Variations in molecular connectivity and spacers are investigated to reveal their impact on photochemical properties and energy tra…
View article: Unraveling the competition between charge and energy transfer in 0D/2D nanographene-graphene heterojunctions
Unraveling the competition between charge and energy transfer in 0D/2D nanographene-graphene heterojunctions Open
The charge and energy transfer processes in photoexcited 0D/2D donor/graphene heterojunctions occur through multiple different pathways. A donor deexcitation event occurring in the most prevalent Förster energy transfer mechanism (strongly…
View article: Unraveling the competition between charge and energy transfer in 0D/2D nanographene-graphene heterojunctions
Unraveling the competition between charge and energy transfer in 0D/2D nanographene-graphene heterojunctions Open
The charge and energy transfer processes in photoexcited 0D/2D donor/graphene heterojunctions occur through multiple different pathways. A donor deexcitation event occurring in the most prevalent Förster energy transfer mechanism (strongly…
View article: Two-Dimensional Layered Heterojunctions for Photoelectrocatalysis
Two-Dimensional Layered Heterojunctions for Photoelectrocatalysis Open
Two-dimensional (2D) layered nanomaterial heterostructures, arising from the combination of 2D materials with other low-dimensional species, feature a large surface area to volume ratio, which provides a high density of active sites for ca…
View article: Functional Groups Accessibility and the Origin of Photoluminescence in N/O‐containing Bottom‐up Carbon Nanodots
Functional Groups Accessibility and the Origin of Photoluminescence in N/O‐containing Bottom‐up Carbon Nanodots Open
Chemical surface functionalization of carbon nanodots (CNDs) offers a valuable opportunity to tailor multifunctionality in these nanocarbons, by engineering the composition of their molecular surface. Therefore, it is important to elucidat…
View article: Magnetic Polaron States in Photoluminescent Carbon Dots Enable Hydrogen Peroxide Photoproduction (Small 32/2023)
Magnetic Polaron States in Photoluminescent Carbon Dots Enable Hydrogen Peroxide Photoproduction (Small 32/2023) Open
Photoluminescent Carbon Dots In article number 2206587, Miroslav Medveď, Giorgio Zoppellaro, Radek Zbořil, Michal Otyepka, and co-workers report on the photogeneration of long-lived magnetic electron/hole polaron states in aspartic acid-ba…
View article: Topology of DNA G-Quadruplexes Can Be Harnessed in Holliday Junction-Based DNA Suprastructures to Control and Optimize Their Biocatalytic Properties
Topology of DNA G-Quadruplexes Can Be Harnessed in Holliday Junction-Based DNA Suprastructures to Control and Optimize Their Biocatalytic Properties Open
International audience
View article: Carbon Dots Enabling Parts‐Per‐Billion Sensitive and Ultraselective Photoluminescence Lifetime‐Based Sensing of Inorganic Mercury
Carbon Dots Enabling Parts‐Per‐Billion Sensitive and Ultraselective Photoluminescence Lifetime‐Based Sensing of Inorganic Mercury Open
One of the UN Sustainable Development Goals is to ensure universal access to clean drinking water. Among the various types of water contaminants, mercury (Hg) is considered to be one of the most dangerous ones. It is mostly its immense tox…
View article: Magnetic Polaron States in Photoluminescent Carbon Dots Enable Hydrogen Peroxide Photoproduction
Magnetic Polaron States in Photoluminescent Carbon Dots Enable Hydrogen Peroxide Photoproduction Open
Experimental data and data from theoretical simulations for Figures 1-5 in the main text of the submitted manuscript.
View article: Magnetic Polaron States in Photoluminescent Carbon Dots Enable Hydrogen Peroxide Photoproduction
Magnetic Polaron States in Photoluminescent Carbon Dots Enable Hydrogen Peroxide Photoproduction Open
Photoactivation of aspartic acid‐based carbon dots (Asp‐CDs) induces the generation of spin‐separated species, including electron/hole (e − /h + ) polarons and spin‐coupled triplet states, as uniquely confirmed by the light‐induced electro…
View article: Communication of molecular fluorophores with other photoluminescence centres in carbon dots
Communication of molecular fluorophores with other photoluminescence centres in carbon dots Open
The establishment of structure-photoluminescence (PL) relationships remains an ultimate challenge in the field of carbon dots (CDs).
View article: Graphene Nanobeacons with High‐Affinity Pockets for Combined, Selective, and Effective Decontamination and Reagentless Detection of Heavy Metals
Graphene Nanobeacons with High‐Affinity Pockets for Combined, Selective, and Effective Decontamination and Reagentless Detection of Heavy Metals Open
Access to clean water for drinking, sanitation, and irrigation is a major sustainable development goal of the United Nations. Thus, technologies for cleaning water and quality‐monitoring must become widely accessible and of low‐cost, while…
View article: Microbial Resistance: Silver Covalently Bound to Cyanographene Overcomes Bacterial Resistance to Silver Nanoparticles and Antibiotics (Adv. Sci. 12/2021)
Microbial Resistance: Silver Covalently Bound to Cyanographene Overcomes Bacterial Resistance to Silver Nanoparticles and Antibiotics (Adv. Sci. 12/2021) Open
Silver covalently bound to cyanographene overcomes bacterial‐resistance mechanisms to silver nanoparticles, eliminating such highly persistent microorganisms at concentrations thirty times lower than free silver nanoparticles. The strong c…
View article: Silver Covalently Bound to Cyanographene Overcomes Bacterial Resistance to Silver Nanoparticles and Antibiotics
Silver Covalently Bound to Cyanographene Overcomes Bacterial Resistance to Silver Nanoparticles and Antibiotics Open
The ability of bacteria to develop resistance to antibiotics is threatening one of the pillars of modern medicine. It was recently understood that bacteria can develop resistance even to silver nanoparticles by starting to produce flagelli…
View article: Progress and challenges in understanding of photoluminescence properties of carbon dots based on theoretical computations
Progress and challenges in understanding of photoluminescence properties of carbon dots based on theoretical computations Open
View article: Biomimetic Materials: Stretch‐Healable Molecular Nanofibers (Adv. Theory Simul. 10/2020)
Biomimetic Materials: Stretch‐Healable Molecular Nanofibers (Adv. Theory Simul. 10/2020) Open
Ultra-stretchable self-healable nanofibers have been designed by Michal Otyepka, Petr Král, and co-workers, inspired by spider silk, which has fascinating properties and molecular structures. The nanofibers, reported in article number 2000…
View article: Stretch‐Healable Molecular Nanofibers
Stretch‐Healable Molecular Nanofibers Open
Ultrastretchable nanofibers formed by covalently linked molecular flakes are introduced. Molecular dynamics simulations show that mixed coronene and perfluorocoronene molecular flakes in aqueous solutions form linear stacks having predomin…
View article: Structural Dynamics of Carbon Dots in Water and <i>N</i>,<i>N</i>-Dimethylformamide Probed by All-Atom Molecular Dynamics Simulations
Structural Dynamics of Carbon Dots in Water and <i>N</i>,<i>N</i>-Dimethylformamide Probed by All-Atom Molecular Dynamics Simulations Open
Carbon dots (CDs), one of the youngest members of the carbon nanostructure family, are now widely experimentally studied for their tunable fluorescence properties, bleaching resistance, and biocompatibility. Their interaction with biomolec…