A5039986507- Conducting polymers and applications
- Lipid Membrane Structure and Behavior
- Catalytic Processes in Materials Science
- Carbon Nanotubes in Composites
- Electrochemical Analysis and Applications
- Catalysts for Methane Reforming
- Supercapacitor Materials and Fabrication
- Electrochemical sensors and biosensors
- Alzheimer's disease research and treatments
- Fullerene Chemistry and Applications
- Analytical Chemistry and Sensors
- Analytical chemistry methods development
- Supramolecular Self-Assembly in Materials
- Antimicrobial Peptides and Activities
- Electrocatalysts for Energy Conversion
- Advanced Photocatalysis Techniques
- Force Microscopy Techniques and Applications
- Organic Electronics and Photovoltaics
- Catalysis and Hydrodesulfurization Studies
- Advanced Sensor and Energy Harvesting Materials
- Copper-based nanomaterials and applications
- Advanced battery technologies research
- Layered Double Hydroxides Synthesis and Applications
- Biochemical and Structural Characterization
- Advanced biosensing and bioanalysis techniques
Polish Academy of Sciences
2015-2025
Institute of Physical Chemistry
2015-2025
Lawrence Berkeley National Laboratory
2021
University of Warsaw
2020
Eaton (Taiwan)
2019
University of Guelph
2012
Warsaw University of Technology
2009-2010
Wichita State University
2005-2010
Cardinal Stefan Wyszyński University in Warsaw
2005-2009
University of Białystok
2009
We present direct visualization of pores formed by alamethicin (Alm) in a matrix phospholipids using electrochemical scanning tunneling microscopy (EC-STM). High-resolution EC-STM images show individual peptide molecules forming channels. The channels are not dispersed randomly the monolayer but agglomerate 2D nanocrystals with hexagonal lattice which average channel–channel distance is 1.90 ± 0.1 nm. STM suggest that each Alm shared between two adjacent Every channel consists six molecules....
Abstract Single‐atom catalysts (SACs) are highly enviable to exploit the utmost utilization of metallic catalysts; their efficiency by utilizing nearly all atoms often exhibit high catalytic performances. To architect isolated single atom on an ideal solid support with strong coordination has remained a crucial trial. Herein, graphene functionalized nitrile groups (cyanographene) as immobilize copper G(CN)‐Cu is reported. The precisely designed mixed‐valence (G(CN)‐Cu) deliver exceptional...
Graphitic carbon nitride (gCN(H)) is a semiconductor with high mechanical and thermal stability which provides good dispersion of metal particles. As it resistant to corrosion, constitutes an alternative black as catalyst support in polymer electrolyte membrane fuel cells (PEMFCs), e.g., alcohol oxidation reactions. In this research work, gCN (H)-supported has been characterized by spectroscopic (UV–vis, IR, Raman) microscopy techniques (SEM, TEM, AFM) order gain deeper understanding the...
A 6-aminopurine (adenine) derivative of bis(2,2′-bithienyl)methane, vis., 4-[2-(6-amino-9H-purin-9-yl)ethoxy]phenyl-4-[bis(2,2′-bithienyl)methane] or Ade-BTM, was designed and synthesized for recognition 5-fluorouracil (FU), an antitumor chemotherapy agent, by RNA-type (nucleobase pairing)-driven molecular imprinting. The prepolymerization complex stoichiometry involved one FU molecule two molecules the Ade-BTM functional monomer. Molecular structure this thermodynamically optimized via...
Abstract Staphylococcus pseudintermedius is a common commensal bacterium colonizing the skin and mucosal surfaces of household animals. However, it has recently emerged as dangerous opportunistic pathogen, comparable to S. aureus for humans. The epidemiological situation further complicated by increasing number methicillin-resistant infections evidence gene transmission driving antibiotic resistance between staphylococci human zoonotic hosts. In present study, we describe unique peptide,...
Two-dimensional (2D) supramolecular organization of asymmetric liquid crystal dimers containing two chemically different mesogenic groups, namely, cyanobiphenyl and pyreneiminomethyl phenoxy linked with an oligomethylene linker length (six or eight -CH2- units), was studied using scanning tunneling microscopy. For this purpose, monolayers these were deposited on HOPG substrate from their solutions in hexane by drop-casting imaged at nanometer resolution after drying. A detailed discussion...
Supercapacitors are energy storage devices known for their long life charge-discharge cycling stability, highly reversible charge ability, and high power density. Carbon nanomaterials, particularly carbon nanotubes (CNTs) graphene have been recognized as promising active materials due to outstanding conductivity large surface area, the two key requirements of superior supercapacitor electrode materials. Moreover, composites these nanomaterials different conducting polymers (CPs) borne out be...
Nitroaromatics belong to the group of toxic components aerosol particles and atmospheric hydrometeors that enter atmosphere through biomass burning fuel combustion. In present work, we report on cytotoxic effects a 2-, 3- 4-nitrophenol mixture model eukaryotic-like cell membrane compared it with in vitro cellular models BEAS-2B (immortalized bronchial epithelial cells) A549 (cancerous alveolar cells). A selected biomembrane comprised DMPC (1,2-dimyristoyl-sn-glycero-3-phosphocholine), DPPC...
Amyloid β, Aβ(1–42), is a component of senile plaques present in the brain Alzheimer's disease patients and one main suspects responsible for pathological consequences disease. Herein, we directly visualize Aβ activity toward brain-like model membrane demonstrate that this strongly depends on oligomer size. PeakForce quantitative nanomechanical mapping mode atomic force microscopy imaging revealed interaction large-size (LS) oligomers, corresponding to high-molecular-weight with total lipid...
Simultaneously, the p-synephrine 1 template was imprinted, and a ferrocene redox probe covalently immobilized in (bis-bithiophene)-based polymer, resulting molecularly imprinted polymer (MIP) deposited on Pt electrode as thin film to form self-reporting MIP film-based chemosensor. After subsequent extraction from film, analyte determined with differential pulse voltammetry (DPV) (redox probe)-free solution. That possible because internal generated DPV analytical signal. The thickness...
CO2 methanation is a very promising technology for the production of alternative fuels with simultaneous use greenhouse gases. Therefore, intensive research carried out on optimization catalysts excellent properties operation in area low temperatures. Here, we present catalyst composed 19 wt % NiO supported alumina/calcium aluminate. The was modified V2O5 order to be suited extrusion and scale-up frame power gas technology. Samples various vanadium contents (Ni–xV, where x represents amount...
The behavior, secondary structure, and orientation of a recently discovered bacteriocin-like peptide BacSp222 in lipid model system supported at gold electrode was investigated by chronocoulometry, polarization modulation infrared reflection absorption spectroscopy (PM-IRRAS), attenuated total reflectance (ATR-IR) spectroscopy. IR spectra show that the structure is predominantly α-helical. Analysis amide I region shows α-helical fragment inserted into bilayer potential range which stable...
We revealed a general guidance on preparation of electrochemically stable meso forms nickel-salen based polymers suitable as new anode materials for electrochemical devices. Electrochemical performance complexes, used monomers polymers, was directly related to the salen ligand structure. have considered it in specially designed and synthesized herein form polymer, vis., poly[meso-N,N′-bis-(3-methylosalicylidene)-2,3-butanediaminonickel(II)]. Then, conditions providing environment appropriate...
The only representative of cathelicidin peptides in humans is LL-37, a multifunctional antimicrobial peptide (AMP) that part the innate immune response. Details LL-37 direct activity against pathogens are not well understood at molecular level. Here, we present research on mechanism interaction between and model multicomponent bilayer lipid membrane (BLM), mimicking microbial cell membrane. Electrochemical impedance spectroscopy (EIS), high-resolution atomic force microscopy (AFM) imaging,...
A new redox conducting polymer, viz. poly[meso-N,N′-bis(salicylidene)-2,3-butanediaminonickel(II)], poly[meso-Ni(II)-SaldMe], belonging to the Schiff base polymer family, was electrochemically synthesized. The charge transfer and polymerization mechanism were unraveled by simultaneous cyclic voltammetry (CV) in situ UV–vis, FTIR-ATR, ex low-temperature ESR spectroscopy. With latter, a short-living paramagnetic transient form of electro-oxidized poly[meso-Ni(II)-SaldMe] detected. This...
Neurodegeneration in Alzheimer's disease is associated with disruption of the neuronal cell membrane by amyloid β (Aβ) peptide. However, mechanism and resulting changes properties remain to be elucidated. To address this issue, herein interaction monomers (AβMs) oligomers (AβOs) a floating bilayer lipid (fBLM) was studied using electrochemical IR spectroscopy techniques. measurements showed that both Aβ forms interacted similarly hydrophobic core (lipid acyl chains), causing conformational...
Alzheimer's disease (AD) is characterized by progressive neurodegeneration associated with amyloid β (Aβ) peptide aggregation. The aggregation of Aβ monomers (AβMs) leads to the formation oligomers (AβOs), neurotoxic form, capable permeating cell membrane. Here, we investigated effect a fluorene-based active drug candidate, named K162, on both and AβO toxicity toward bilayer lipid membrane (BLM). Electrochemical impedance spectroscopy (EIS), atomic force microscopy (AFM), molecular dynamics...