Kateřina Holá

ORCID: 0000-0003-0172-5217
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About
Contact & Profiles
Research Areas
  • Carbon and Quantum Dots Applications
  • Graphene and Nanomaterials Applications
  • Nanocluster Synthesis and Applications
  • Graphene research and applications
  • Quantum Dots Synthesis And Properties
  • Nanoparticle-Based Drug Delivery
  • Luminescence and Fluorescent Materials
  • Cancer Genomics and Diagnostics
  • Molecular Junctions and Nanostructures
  • Education, Psychology, and Social Research
  • Nanoplatforms for cancer theranostics
  • Advancements in Battery Materials
  • Prostate Cancer Treatment and Research
  • Advanced biosensing and bioanalysis techniques
  • X-ray Diffraction in Crystallography
  • Crystallization and Solubility Studies
  • Electromagnetic wave absorption materials
  • Nanoparticles: synthesis and applications
  • Advanced Photocatalysis Techniques
  • Aerosol Filtration and Electrostatic Precipitation
  • Human Motion and Animation
  • Linguistic and Cultural Studies
  • Curcumin's Biomedical Applications
  • Fullerene Chemistry and Applications
  • Consumer Attitudes and Food Labeling

University Hospital Olomouc
2024-2025

Palacký University Olomouc
2013-2025

Regional Centre of Advanced Technologies and Materials
2013-2020

Moravská Vysoká Skola Olomouc
2020

Uppsala University
2019-2020

Charles University
2017

Carbon dots (CDs) are a stable and highly biocompatible fluorescent material offering great application potential in cell labeling, optical imaging, LED diodes, optoelectronic technologies. Because their emission wavelengths provide the best tissue penetration, red-emitting CDs of particular interest for applications biomedical Current synthetic strategies enabling red-shifted include increasing CD particle size (sp2 domain) by proper strategy tuning surface chemistry with suitable...

10.1021/acsnano.7b06399 article EN ACS Nano 2017-11-14

Carbon dots that exhibit near-infrared fluorescence (NIR CDs) are considered emerging nanomaterials for advanced biomedical applications with low toxicity and superior photostability targeting compared to currently used photoluminescence agents. Despite progress in the synthesis of NIR CDs, there remains a key obstacle using them as an vivo theranostic agent. This work demonstrates newly developed sulfur nitrogen codoped CDs highly efficient photothermal therapy (PTT) mouse models...

10.1038/s41377-018-0090-1 article EN cc-by Light Science & Applications 2018-11-21

We describe the synthesis of Gd(III)-doped carbon dots as dual fluorescence-MRI probes for biomedical applications. The derived show uniform particle size (3–4 nm) and gadolinium distribution form stable dispersions in water. More importantly, they exhibit bright fluorescence, strong T1-weighted MRI contrast low cytotoxicity.

10.1039/c2jm35592b article EN Journal of Materials Chemistry 2012-01-01

Abstract Materials based on metallic elements that have d orbitals and exhibit room temperature magnetism been known for centuries applied in a huge range of technologies. Development carbon magnets containing exclusively sp is viewed as great challenge chemistry, physics, spintronics materials science. Here we describe series organic prepared by simple controllable route the substitution fluorine atoms fluorographene with hydroxyl groups. Depending chemical composition (an F/OH ratio) 3...

10.1038/ncomms14525 article EN cc-by Nature Communications 2017-02-20

We present the first example of covalent chemistry on fluorographene, enabling attachment –SH groups through nucleophilic substitution fluorine in a polar solvent. The resulting thiographene-like, 2D derivative is hydrophilic with semiconducting properties and bandgap between 1 2 eV depending F/SH ratio. Thiofluorographene applied DNA biosensing by electrochemical impedance spectroscopy.

10.1002/adma.201500094 article EN Advanced Materials 2015-02-18

Luminescent solar concentrators (LSCs) are light-management devices and used for harvesting concentrating light from a large area to their edges. Being semitransparent devices, LSCs show great promise future utilization in glass walls of urban buildings as environmentally friendly photovoltaic power plants. The development cheap eco-safe materials, the extension LSC operation range, enhancement optical efficiency key challenges, which need be solved order transform energetically passive into...

10.1039/c9nr10029f article EN Nanoscale 2020-01-01

Cationic quaternized carbon dots (QCDs) and anionic graphene oxide sheets (GO) are combined via non-covalent interactions following a self-assembly pathway to form highly biocompatible fluorescent hybrid materials. These hybrids act as selective probes with controlled labelling of the cell nucleus or cytoplasm depending on QCD loading.

10.1039/c4cc02637c article EN Chemical Communications 2014-06-19

Artificial photosynthesis is seen as a path to convert and store solar energy into chemical for our society. In this work, highly fluorescent aspartic acid-based carbon dots (CDs) are synthesized employed photosensitizer drive photocatalytic hydrogen evolution with an [FeFe] hydrogenase (CrHydA1). The direct interaction in CDs from l-aspartic acid (AspCDs)/CrHydA1 self-assembly systems, which visualized native gel electrophoresis, has been systematically investigated understand the...

10.1021/acscatal.0c02474 article EN cc-by ACS Catalysis 2020-06-22

Mimicking nature is always beneficial for improving the performance of artificial systems.

10.1039/c8ta12146j article EN cc-by Journal of Materials Chemistry A 2019-01-01

Superparamagnetism is a phenomenon caused by quantum effects in magnetic nanomaterials. Zero-valent metals with diameters below 5 nm have been suggested as superior alternatives to superparamagnetic metal oxides, having greater superspin magnitudes and lower levels of disorder. However, synthesis such nanometals has hindered their chemical instability. Here we present method for preparing air-stable iron nanoparticles trapped between thermally reduced graphene oxide nanosheets exhibiting...

10.1038/ncomms12879 article EN cc-by Nature Communications 2016-09-15

Curcumin possesses wide-ranging anti-inflammatory and anti-cancer properties its biological activity can be linked to potent antioxidant capacity. Superparamagnetic maghemite (γ-Fe2 O3 ), called surface-active nanoparticles (SAMNs) were surface-modified with curcumin molecules, due the presence of under-coordinated Fe(III) atoms on nanoparticle surface. The so-obtained curcumin-modified SAMNs (SAMN@curcumin) had a mean size 13±4 nm. SAMN@curcumin was characterized by transmission scanning...

10.1002/chem.201402820 article EN Chemistry - A European Journal 2014-07-30
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