A5032129515- Advanced Photocatalysis Techniques
- Electron Spin Resonance Studies
- Advanced oxidation water treatment
- Lanthanide and Transition Metal Complexes
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Nanomaterials for catalytic reactions
- Water Quality Monitoring and Analysis
- Perovskite Materials and Applications
- Magnetism in coordination complexes
- melanin and skin pigmentation
- Advanced NMR Techniques and Applications
- Environmental remediation with nanomaterials
- Ga2O3 and related materials
- Photosynthetic Processes and Mechanisms
- Molecular Sensors and Ion Detection
- Analytical Chemistry and Sensors
- Catalytic Cross-Coupling Reactions
- Ferrocene Chemistry and Applications
- Dendrimers and Hyperbranched Polymers
- Gas Sensing Nanomaterials and Sensors
- Ocular Infections and Treatments
- Bone health and treatments
- Fungal Infections and Studies
- Studies on Chitinases and Chitosanases
Mahidol University
2015-2025
Institute of Catalysis and Petrochemistry
2015-2017
University of Pittsburgh
2004-2016
Max Planck Institute for Biophysical Chemistry
2013
University of Wisconsin–Madison
2001
Antiaggregation drugs play an important role in therapeutic approaches for Alzheimer's disease. Although a large number of small molecules that inhibit the aggregation tau protein have been identified, little is known about their mode action. Here, we reveal mechanism and nature species are generated by interaction with organic compound pthalocyanine tetrasulfonate (PcTS). We demonstrate PcTS interferes filament formation targeting into soluble oligomers. A combination NMR spectroscopy,...
Zinc oxide (ZnO) nanoparticles have recently been identified as a promising candidate for advanced nanophotonics applications and quantum technologies. This work reports the formation of luminescent point defects describes their photophysical properties. In particular, it is shown using correlative photoluminescence, cathodoluminescence, electron paramagnetic resonance (EPR), X‐ray absorption near‐edge spectroscopy that green luminescence at 2.48 eV an EPR line g = 2.00 belong to surface...
Pulsed electron–electron double resonance (PELDOR, also known as DEER) has become a method of choice to measure distances in biomolecules. In this work we show how the performance can be improved at high EPR frequencies (94 GHz) using variable dual frequency irradiation mode cavity order obtain enhanced resolution toward orientation selection. Dipolar evolution traces representative RNA duplex and an α-helical peptide were analysed terms possible bi-radical structures by considering inherent...
Abstract A visible light mediated photocatalyst-free synthesis of N -substituted 2-aminobenzimidazoles directly from o -phenylenediamines and isothiocyanates is developed in a one-pot fashion. This reaction proceeds through three steps: -substitution -phenylenediamines, thiourea formation cyclodesulfurization. method enables the rapid efficient structurally diverse 2-aminobenzimidazoles, achieving yields up to 92% across 69 examples. The practicality demonstrated by gram-scale synthesis. key...
This study presents an appealing approach to sustainable catalysis using cellulose filter paper as a support for copper-catalyzed reactions. The was functionalized with thiol groups through reaction thioglycolic acid, which served dual purpose: partially reducing Cu(II) Cu(I) and stabilizing active copper species via Cu–S interactions. Spectroscopic analysis confirmed the formation of highly dispersed multi-valent Cu2O/CuO on thiol-functionalized cellulose, resulting in efficient catalyst....
Dermatophytes are keratinophilic fungi that the most common cause of fungal skin infections worldwide. Melanin has been isolated from several important human pathogens, and polymeric pigment is now recognized as an virulence determinant. This study investigated whether dermatophytes, including Trichophyton rubrum , mentagrophytes Epidermophyton floccosum Microsporum gypseum, produce melanin or melanin-like compounds in vitro during infection. Digestion pigmented microconidia macroconidia...
Melanins are synthesized by organisms of all biological kingdoms and comprise a heterogeneous class natural pigments. Certain these polymers have been implicated in the pathogenesis several important human fungal pathogens. This study investigated whether skin pathogen Malassezia furfur produces melanin or melanin-like compounds. A melanin-binding monoclonal antibody (MAb) labelled vitro cultivated yeast cells M. furfur. In addition, melanization yeasts hyphae was detected anti-melanin MAb...
We demonstrate the use of electron spin resonance (ESR) to determine long-range distances and flexibility in water-soluble bis-peptide molecular rods. Bis-peptide oligomers with 4-8 monomer units were synthesized. ESR determined that end-to-end length peptides is linearly proportional number monomers. The linear shape is, therefore, easily interpreted from data. In addition, rods was quantified directly ESR-determined distance distribution functions. Quantitative information on chain...
A strategic preparation of ferrocenated compounds as aerobic catalysts was successfully carried out for the decolorization methylene blue and oxidation phenylboronic acid without light irradiation excess addition hydrogen peroxide.
The effects of appended hydroxyl groups and the chain length a series (imino)pyridine ligands on copper coordination copper-catalyzed aerobic oxidation alcohols were investigated.
Protein spin labeling to yield the nitroxide-based R1 side chain is a powerful method measure protein dynamics and structure by electron resonance. However, measurements are complicated flexibility of chain. While analysis approaches for solvent-exposed α-helical environment have been developed partially account flexibility, similar work in β-sheets lacking. The goal this study provide first essential steps understanding conformational preferences within edge β-strands using X-ray...
A bis-BODIPY-based fluorescent probe (BODIPY-NN) is developed for Cu 2+ detection in aqueous solutions and living cells. The sensing mechanism based on the situ generation of a benzimidazole–triazole receptor induced by ions.
Vibrio spp. play a crucial role in the global recycling of highly abundant recalcitrant biopolymer chitin marine ecosystems through their ability to secrete chitin-degrading enzymes efficiently hydrolyse chitinous materials and use them as major carbon source. In this study, first crystal structures complete four-domain chitin-active AA10 lytic polysaccharide monooxygenase from chitinolytic bacterium campbellii type strain ATCC BAA-1116 are reported. The apo copper-bound Vh LPMO10A were...