Publications by authors named "E Kirilova"
In this research, we explore the synthesis of and characterize α-aminophosphonates derived from anthraquinone and benzanthrone, focusing on their fluorescence properties and potential applications in confocal laser scanning microscopy (CLSM). The synthesized compounds exhibit notable solvatochromic behavior, emitting fluorescence from green to red across various solvents. Spectroscopic analysis, including H-, C-, and P-NMR, FTIR, and mass spectrometry, confirms the chemical structures.
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- New fluorophores were developed from benzanthrone derivatives, specifically by substituting a bromine atom with secondary cyclic amines.
- The inclusion of a nitro group enhances the reaction and improves the absorption and luminescent properties of these compounds in different organic solvents.
- These new dyes show increased hyperpolarizability and have potential uses in optical limiter devices and optoelectronics.
Background: Osteoporosis is a common chronic disease characterized by low bone mineral density (BMD) and microarchitectural deterioration of the bone, which are associated with increased risk of fragility fractures. Currently the most popular tool is the fracture risk assessment model FRAX to calculate the 10-year probability of major osteoporotic fractures (MOF) and hip fractures (HF).
Objective: To investigate the prevalence of low BMD at axial sites and fracture risk in Bulgarian population.
Sustainable agricultural practices are still essential due to soil degradation and crop losses. Recently, the relationship between plants and nanoparticles (NPs) attracted scientists' attention, especially for applications in agricultural production as nanonutrition. Therefore, the present research was carried out to investigate the effect of FeO NPs at low concentrations (0, 1, 10, and 20 mg/L) on three genotypes of barley ( L.
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- New substituted azomethines of benzanthrone were created through a condensation reaction, resulting in imines that were reduced to amines using sodium borohydride.
- These new compounds were analyzed using various techniques like NMR, IR, and fluorescence spectroscopy, revealing their enhanced luminescence compared to the original azomethines.
- Their photophysical properties showed significant sensitivity to solvent polarity, indicating potential for use as luminescent dyes with notable absorption and emission characteristics.