A5023031841- Electrochemical sensors and biosensors
- Conducting polymers and applications
- Electrochemical Analysis and Applications
- Analytical Chemistry and Sensors
- Lignin and Wood Chemistry
- Supercapacitor Materials and Fabrication
- Advanced Chemical Sensor Technologies
- Mesoporous Materials and Catalysis
- Porphyrin and Phthalocyanine Chemistry
- Electrocatalysts for Energy Conversion
- Nanoparticles: synthesis and applications
- Plant Stress Responses and Tolerance
- Quantum Dots Synthesis And Properties
- Carbon Nanotubes in Composites
- Thallium and Germanium Studies
- Biochemical and biochemical processes
- Analytical chemistry methods development
- Advanced battery technologies research
- Photosynthetic Processes and Mechanisms
- Advanced Sensor and Energy Harvesting Materials
- Plant-Microbe Interactions and Immunity
- Photodynamic Therapy Research Studies
- Integrated Water Resources Management
- Crystallography and molecular interactions
- TiO2 Photocatalysis and Solar Cells
Poznań University of Technology
2015-2024
Tohoku University
2002-2010
Lignin to the Rescue? The increasing demand for rechargeable batteries is putting a strain on availability of certain key raw materials. second most common biopolymer and typically makes up 25% wood. derivatives are also readily available as by-products from pulp paper industry. Milczarek Inganäs (p. 1468 ) combined lignin derivatives, which electronic insulators, with polypyrole, conductive polymer, into an interpenetrating composite suitable use cathode.
A platinum electrode was modified with electropolymerized films of 4-allyl-2-methoxyphenol (eugenol) by its oxidative polymerization from an alkaline solution cyclic voltammetry. The than used to determine dopamine (DA) in excess ascorbic acid (AA) differential pulse peak positions as well relative sensitivity DA/AA were affected the potential window applied for polymerization. For between 0 and 2.2 V, potentials recorded a phosphate buffer (pH 7.4) −61 +152 mV vs Ag/AgCl AA DA,...
Lignosulfonic acid (LS1) and partially desulfonated lignosulfonic (LS2) were oxidatively deposited on a preactivated glassy carbon (GC) electrode, giving rise to redox active films showing three distinct couples at midpeak potentials (E°′) of 0.22, 0.44, 0.53 V (vs Ag/AgCl in 0.1 M H2SO4). The activity was assigned quinone moieties different degrees substitution, formed upon the oxidation electroactive groups lignosulfonate structure. most predominant couple (E°′ = 0.44 V) shifted negatively...
Participation of nitric oxide (NO) in cross-talk between ivy pelargonium (Pelargonium peltatum) leaves and Botrytis cinerea was investigated using electrochemical biochemical approaches. In response to the necrotroph, initiated a near-immediate NO burst, but specificity its generation dependent on genetic makeup host plant. resistant cultivar, strong burst followed by wave secondary generation, shown bio-imaging with DAF-2DA. The epicentre synthesis located targeted cells, which exhibited...
Renewable materials are requested for large scale electrical storage, a coming necessity with the growth of intermittent solar and wind renewable electricity generation. Biopolymers source inexpensive materials, in particular through use black liquor from paper production, waste product. Interpenetrating networks biopolymer lignosulfonate (Lig) conjugated polymer polypyrrole (Ppy) synthesized by galvanostatic polymerization pyrrole/lignosulfonate mixture acidic aqueous electrolyte. Methoxy...
Abstract Alkali lignin undergoes strong adsorption on polycrystalline gold electrodes. Subsequent oxidation in a sulfuric acid solution leads to restructured redox‐active polymer that shows features characteristic for surface confined species. Surface coverage of up 4.40×10 −10 mol cm −2 may be obtained depending the time or concentration solution. Using Laviron's approach electron‐transfer rate constant and transfer coefficient were found 8.9 s −1 0.35, respectively. The formal potential...
In this study, advanced multifunctional silica/lignin composite materials have been prepared. The main focus of study includes the chemical modification Kraft lignin, and its interaction with silica matrix, thereby providing possibility applying obtained systems in a number areas, including electrochemistry. Analysis dispersive–morphological properties revealed that samples containing 10–20 parts by weight lignin had best parameters. elemental analysis final composites, thus, indicated an...
The subject of this study was the participation nitric oxide (NO) in plant responses to wounding, promoted by nicking pelargonium (Pelargonium peltatum L.) leaves. Bio-imaging with fluorochrome 4,5-diaminofluorescein diacetate (DAF-2DA) and electrochemical situ measurement NO showed early (within minutes) transient (2 h) generation after wounding restricted site injury. In order clarify functional role relation modulation redox balance during a pharmacological approach used. A positive...
Nitroxyl (HNO) is the one-electron reduced and protonated congener of nitric oxide (•NO), owning a distinct chemical profile. Based on real-time detection, we demonstrate that HNO endogenously formed in Arabidopsis. Senescence hypoxia induce shifts redox balance, triggering decay or formation mediated by non-enzymatic •NO/HNO interconversion with cellular reductants. The stimuli-dependent generation supports competes •NO signalling, depending local environment.
Abstract The voltammetric behavior in alkaline solution of a nickel‐based chemically modified electrode (poly‐Ni(II)curcumin) prepared by oxidative electropolymerization nickel‐curcumin complex for electrooxidation aliphatic alcohols was investigated cyclic voltammetry and rotating disk technique (curcumin=1,7‐bis[4‐hydroxy‐3‐methoxyphenyl]‐1,6‐heptadiene‐3,5‐dione). dependence the oxidation current on alcohol concentration number redox centers Ni(II)/Ni(III) is discussed. From fact that...