A5072553945- Radioactive element chemistry and processing
- Advanced oxidation water treatment
- Per- and polyfluoroalkyl substances research
- Photochemistry and Electron Transfer Studies
- Atmospheric chemistry and aerosols
- Radiation Effects and Dosimetry
- Ionic liquids properties and applications
- Toxic Organic Pollutants Impact
- Polymer Nanocomposite Synthesis and Irradiation
- Electrochemical Analysis and Applications
- Polyoxometalates: Synthesis and Applications
- Catalysis and Oxidation Reactions
- Advanced Photocatalysis Techniques
- Electron Spin Resonance Studies
- Advanced Chemical Physics Studies
- Analytical chemistry methods development
- Pharmaceutical and Antibiotic Environmental Impacts
- Graphite, nuclear technology, radiation studies
- Chemical Synthesis and Reactions
- Polymer crystallization and properties
- Synthesis and Biological Evaluation
- Catalytic Processes in Materials Science
- Spectroscopy and Quantum Chemical Studies
- Conducting polymers and applications
- Chemical Reactions and Mechanisms
Lodz University of Technology
1998-2024
Instytut Chemii i Techniki Jądrowej
2013-2023
Brookhaven National Laboratory
2006-2013
University of Łódź
1998-2011
Argonne National Laboratory
2007
Pairing of a Keggin or Lindqvist polyoxometalate (POM) anion with an appropriate tetraalkylphosphonium cation is shown to yield the first members new family ionic liquids (ILs). Detailed characterization one them, ambient-temperature "liquid POM" comprising salt trihexyl(tetradecyl) phosphonium cation, by voltammetry, viscometry, conductimetry, and thermal analysis indicates that it exhibits conductivity viscosity comparable those previously described inorganic−organic POM-IL hybrid but...
The pairing of selected polyoxometalate (POM) anions with appropriate tetraalkylphosphonium cations is shown to yield an original family ionic liquids, among them ambient-temperature "liquid POM".
The radiolytic methods of PFOS decomposition in aqueous solutions investigated this work for potential environmental applications are based on the use gamma rays or a beam accelerated electrons (EB) under different chemical conditions irradiated solutions. most active reagents employed hydrated from water radiolysis. There also OH and H radicals which take part occurring reactions. In presence formate 2-propanol solutions, reductive derived them (CO2−, (CH2)2C-OH) able to induce PFOS. turn,...
In chemically amplified resists for ionizing radiations such as electron beams and extreme ultraviolet (EUV), low-energy electrons play an important role in the pattern formation processes. The reactivity of acid generators with was evaluated using solvated tetrahydrofuran, which were generated by a pulsed beam. rate constants ranged from 0.6 to 1.9 ×1011 M-1 s-1.
On time scales of a nanosecond or less, radiolytically-generated excess electrons in ionic liquids undergo solvation processes and reactions that determine all subsequent chemistry the accumulation radiolytic damage. Using picosecond pulse radiolysis detection methods, we observed quantified response electron 1-methyl-1-butyl-pyrrolidinium bis (trifluoromethylsulfonyl)amide used it to understand scavenging by typical solute, duroquinone.
The reaction of hydroxyl radical (HO•) with DNA produces many primary reactive species and lesions as final products. In this study, we have examined the optical spectra intermediate derived from HO• a variety single- double-stranded oligodeoxynucleotides ct-DNA in range 1 μs to ms by pulse radiolysis using an Intensified Charged Coupled Device (ICCD) camera. Moreover, applied our published analytical protocol based on LC-MS/MS system isotopomeric internal standards enable accurate precise...
Hydrophobic room-temperature ionic liquids (ILs) hold promise as replacements for molecular diluents processing of used nuclear fuel well the development alternative separations processes, provided that solvent can be made resistant to ionizing radiation. We demonstrate 1-benzylpyridinium cations are uniquely suited radiation due occurrence charge delocalization in both their reduced and oxidized forms ILs. It is suggested excess electron hole latter ILs stabilized through formation...
Advanced Oxidation Processes (AOPs) are the water treatment techniques that commonly used forthe decomposition of non-biodegradable organic pollutants. However, some pollutants electron deficient and thus resistant to attack by reactive oxygen species (e.g., polyhalogenated compounds) but they may be degraded under reductive conditions. Therefore, methods alternative or supplementary well-known oxidative degradation ones. In this paper, 4,4'-isopropylidenebis(2,6-dibromophenol) (TBBPA,...
A shape-persistent molecule, featuring four bipyridinium units, has been synthesized that upon reduction undergoes intermolecular pimerization because of the rigid architecture molecule. The process investigated by a variety techniques, such as absorption measurements, EPR spectroscopy, well gamma and pulse radiolysis, compared with behavior model compound. Computational studies have also performed to support experimental data. most interesting feature tetramer is occurs only above threshold...
Abstract In this work, the feasibility of sterilizing a water suspension poly‐3‐hexylthiophene nanoparticles (P3HT‐NPs) is investigated using ionizing radiation, either γ ‐rays or high‐energy electrons (e‐beam). It found that regardless irradiation source, size, polydispersity, aggregation stability, and morphology NPs are not affected by treatment. Furthermore, impact radiation on physicochemical properties at different absorbed doses (10–25 kGy) dose rates (kGy time −1 ) evaluated through...
A pulse radiolysis study of isotactic polypropylene (PP) film has been carried out with the main aims investigating charge trapping in an undoped system and solute radical ion generation pyrene (Py) doped matrix. In PP, gives electron–positive hole pairs. The electron can be stabilized as a trapped electron, e. transient absorption spectrum e near-IR (up to 1800 nm) was observed temperature range 30–100 K. This IR not detected case oxidized PP. such matrix electrons scavenged by oxidation...
The photoreduction by amines and N-phenylglycine, NPG, of six styrylquinoxalin-2(1 H)-ones derivatives substituted in the styryl moiety, R-SQ, was studied using flash photolysis. photoreaction is initiated via a single electron transfer from donor (amines or NPG) to R-SQ excited triplet state, 3R-SQ*, with formation state radical ion pair charge exciplex, 3[CRIP/CTE]. These species live longer than respective 3R-SQ* have very similar transient spectra. In presence these 3[CRIP/CTE] evolve on...