A5033779185- Photochemistry and Electron Transfer Studies
- Nanoparticle-Based Drug Delivery
- Analytical Chemistry and Chromatography
- Food composition and properties
- Phenothiazines and Benzothiazines Synthesis and Activities
- Synthesis and Reactions of Organic Compounds
- Synthesis and Biological Evaluation
- Synthesis and Characterization of Heterocyclic Compounds
- Advanced Chemical Sensor Technologies
- Microbial Metabolites in Food Biotechnology
- Enzyme Production and Characterization
- bioluminescence and chemiluminescence research
- Characterization and Applications of Magnetic Nanoparticles
- Extraction and Separation Processes
- Chemical Thermodynamics and Molecular Structure
- Inorganic and Organometallic Chemistry
- Dye analysis and toxicity
- Surfactants and Colloidal Systems
- Spectroscopy and Chemometric Analyses
- Free Radicals and Antioxidants
- Nutrition and Health Studies
- Molecular Sensors and Ion Detection
- Computational Drug Discovery Methods
- Chalcogenide Semiconductor Thin Films
- Drug Solubulity and Delivery Systems
University of Zielona Góra
2009-2021
Częstochowa University of Technology
1999-2005
Pedagogical University
2004-2005
Poznań University of Economics and Business
1969-2004
Lutsk National Technical University
2003
Rzeszów University of Technology
2001
Lviv University
2000
University of Education, Winneba
1999
Stockholm University
1987
Instytut Nauk Ekonomicznych
1976
Abstract— The absorption and fluorescence spectra of riboflavin, riboflavin tetrabutyrate lumichrome have been studied in organic solvents different polarity including ethanol, acetone, dioxane, pyridine, acetic acid cyclohexane‐dioxane mixtures. molar extinction coefficients the compounds were measured character solvent sensitive changes observed are discussed. effect hydrogen bonding and/or intramolecular charge transfer complex proposed as possible explanation. Changes shape emission less...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhototautomerism of lumichromes and alloxazinesPill-Soon Song, Ming Sun, Anna Koziolowa, Jacek KoziolCite this: J. Am. Chem. Soc. 1974, 96, 13, 4319–4323Publication Date (Print):June 1, 1974Publication History Published online1 May 2002Published inissue 1 June 1974https://pubs.acs.org/doi/10.1021/ja00820a045https://doi.org/10.1021/ja00820a045research-articleACS PublicationsRequest reuse permissionsArticle Views386Altmetric-Citations85LEARN ABOUT...
Abstract— The absorption and fluorescence emission spectra of lumiflavin have been studied in nonaqueous solvents different polarity. corrected show apparent mirror symmetry to the longest wavelength maximum. In view high molar extinction coefficient maximum spectra, constant polarization across it dioxane values quantum yields Buorescence, τ→τ* character corresponding electronic transition was proposed. Roughly linear correlation found between energies on one hand, polarity expressed...
The electronic structure of some monomethyl derivatives alloxazine has been investigated by the INDO/S-Cl-1 method in both ground and two first-excited singlet states. A description intrinsic states molecules extensive use HOMO/LUMO coefficients is suggested. proposed quantitatively qualitatively characterises satisfactorily various phenomena arising from spectral properties, reactivity to interpretation NMR spectra. shows explicitly non-accidental conjunctions, arranging terms certain,...
Abstract— Fluorescence lifetimes of 3‐methyllumichrome dual fluorescence at 440 nm (alloxazinic) and 520 (isoalloxazinic) 1,3‐dimethyllumichrome, which is unable to phototautomerize, the same wavelengths have been measured in methanol‐acetic acid mixtures. The decays both lumichromes studied are exponential phototautomeric created within approximately 50 ps. From initial values about 0.9 ns 6.4 5% acetic shorten considerably with increasing concentration reaching 0.2 for...
A slow and reversible hydration of N (1) -unsubstituted alloxazines in aqueous alkaline solutions has been studied. Reaction products stable (kinetically) neutral acidic were isolated investigated by IR, NMR, UV mass spectroscopy. The possible mechanism the reaction structure is discussed.
The results of research on new magnetic materials for biomedical applications are discussed. These porous silicate glasses with fillers. To ensure the smallest number components subsequent removal from body, fillers bare magnetite nanoparticles (Fe 3 O 4 ). properties these have been investigated using ferromagnetic resonance method (FMR). FMR analysis has complemented by scanning electron microscope (SEM) measurements. In order to examine effect time degradation filling glass measurement...
Distribution of the isoelectric point (pI) was calculated for hypervariable regions Fab fragments antibody molecules, which structure is annotated in structural database SabDab. The distribution consistent with universal all organisms dividing proteome into two sets acidic and basic proteins. It shows additional fine a form narrow-sized peaks pI values. This an explanation why small change environmental pH can have strong effect on antibody-antigen affinity. To show this, typical...
Selected examples of cyclodextrin (CD) oligomers have been presented, describing their syntheses, physicochemical properties and application possibilities. The first part the review concerns CD dimers, second one deals with trimers tetramers. references are cited mainly reports that appeared during years 2001-2003. Keywords: oligomers, cd