A5073833992- Oxidative Organic Chemistry Reactions
- Analytical Chemistry and Sensors
- Gold and Silver Nanoparticles Synthesis and Applications
- Advanced biosensing and bioanalysis techniques
- Radical Photochemical Reactions
- Porphyrin and Phthalocyanine Chemistry
- Vanadium and Halogenation Chemistry
- Spectroscopy and Quantum Chemical Studies
- Electrochemical sensors and biosensors
- Plasmonic and Surface Plasmon Research
- Orbital Angular Momentum in Optics
- Catalytic Processes in Materials Science
- Nanocluster Synthesis and Applications
- Photonic and Optical Devices
- Surface Chemistry and Catalysis
- Gas Sensing Nanomaterials and Sensors
University of Chemistry and Technology, Prague
2018-2024
Gold nanoparticles with shape-determined chirality enable the attainment of plasmon-associated optical activities exceeding those exhibited by all previously known natural objects. These nanoparticles, together their subdiffraction light focusing and excitation chiral, plasmon-related near-fields, offer a range very interesting applications. Herein, we propose use these chiral plasmon for asymmetric organic catalysis implementation optically active probes (alkoxyamines). Plasmon triggering...
Distinct advantages of surface enhanced Raman scattering (SERS) in molecular detection can benefit the enantioselective discrimination specific configurations. However, many recent methods still lack versatility and require customized anchors to chemically interact with studied analyte. In this work, we propose utilization helicoid-shaped chiral gold nanoparticles arranged an ordered array on a grating for SERS recognition. This arrangement ensured homogeneous distribution plasmonic hot...
Plasmon-assisted transformations of organic compounds represent a novel opportunity for conversion light to chemical energy at room temperature. However, the mechanistic insights interaction between plasmon and molecules is still under debate. Herein, we proposed comprehensive study plasmon-assisted reaction mechanism using unsymmetric iodonium salts (ISs) as an probe. The experimental theoretical analysis allow us exclude possible thermal effect or hot electron transfer. We found that with...
Abstract Chiral nanophotonic platforms provide a means of creating near fields with both enhanced asymmetric properties and intensities. They can be exploited for optical measurements that allow enantiomeric discrimination at detection levels > 6 orders magnitude than is achieved conventional chirally sensitive spectroscopic methods based on circularly polarized light. Here it shown surface Raman spectroscopy (SERS) such local probe the field environment. It used to achieve chiral...
Abstract In this paper, the utilization of plasmon‐induced cleavage CI bond in structure iodonium salt followed by grafting organic radicals to Au surface is proposed. The plasmon excited coupling Au‐covered optical fiber with laser light source, wavelength corresponding absorption band, and immersion solution salt. Grafting procedure monitored through shift resonanse (SPR) position during transmission. Further verifications are performed using enhanced Raman spectroscopy (SERS) scanning...
The chiral recognition of organic compounds is vital importance in the field pharmacology and medicine. Unfortunately, common analytical routes used this are significantly restricted by time spent equipment demands. In work, we propose an unprecedented alternative, aimed at enantiomer discrimination estimation their concentrations uncomplicated instantaneous manner. proposed approach based on creation optical fiber probe with two pronounced plasmonic bands attributed to gold silver. or...
Covalent organic frameworks (COFs) are an emerging class of crystalline networks that covalently built from components and featured by merits low density, well-defined pore aperture, large surface area, inherent porosity, facilely tailored functionality, ordered channel structure.Among other applications, COF compounds can be utilized for CO2 detection.It Is known the preparation COFs is commonly associated with hard experimental conditions (high pressure, inert atmosphere, high...
The main goal of this work is to create a highly sensitive optical sensor based on the principle plasmon surface resonance (SPR) for inorganic salts.The experimental concept includes creation fiber probe with anion capturing agent(ACA) through diazonium chemistry selective-entrapping targeted compounds and their trace amounts detection.The characterization obtained structures properties were performed using SERS, AFM UV-Vis methods.The created hybrid used measure presence concentration...
Plasmon-assisted transformations of organic compounds represent a novel opportunity for conversion light to chemical energy at room temperature. Herein, we propose comprehensive investigation plasmon-triggered decomposition iodonium salts containing various substituents (ISs). We found that plasmon interaction with unsymmetrical ISs led the intramolecular excitation electron followed by regioselective cleavage C–I bond formation electron-rich radical species. Such unprecedented brings...
<p>Plasmon-assisted transformations of organic compounds represent a novel opportunity for conversion light to chemical energy at room temperature. Herein, we propose comprehensive investigation plasmon-triggered decomposition iodonium salts containing various substituents (ISs). We found that plasmon interaction with unsymmetrical ISs led the intramolecular excitation electron followed by regioselective cleavage C–I bond formation electron-rich radical species. Such unprecedented...