MECHANOLUMINESCENT HOST-GUEST SYSTEMS BASED ON 9-HEXYL-9H-CARBAZOLE AND 8-HYDROXYQUINOLINE AS INDICATORS FOR Zn, Al AND Mg CATIONS

Mechanoluminescent properties of a host-guest system based on carbazole and 8-hydroxiquinoline are reported. Sensing response toward Zn, Al and Mg cations are studied.This work was supported by the Russian Science Foundation grant # 19-73-10144-P

Detection of Anti-viral Drug Riamilovir and Herbicides in Aqueous Media by Using Pyrene-based Fluorescent Chemosensors

Two ethyleneglycol esters of 1-pyrene carboxylic acid were studied as chemosensors for the fluorescence “turn-off” detection of two nitro-containing analytes, such as antiviral drug Riamilovir (Triazavirin ®) and herbicidal agent dinitro-ortho-cresol (DNOC). In both cases the dramatic fluorescence quenching was observed with quenching constants as high as 3·104 M-1 and limits of detection (LOD) as low as 100 ppb

Bispyrenylalkane Chemosensor for the Naked-eye Detection of Nitro-explosives

Pyrene-based compounds have a great potential as fluorescent chemosensors for various analytes including common nitro-explosives, such as 2,4,6-trinitrotoluene (TNT). Compounds having two pyrene units in one molecule, such as bispyrenylalkanes, are able to form stable, bright emissive in a visual wavelength region excimers both in non-polar and polar environments. In this work we wish to report that in non-polar solvents the excimer has poor chemosensing properties while in aqueous solutions it provides significant “turn-off” fluorescence response to TNT in the sub-nanomolar concentrations

Synthesis of Furfural from Pre-Ball-Milled Sunflower Husks

This work was supported by the Russian Foundation for Basic Research, project # 19-73-10144

Pyrene-Derived Grignard Reagent(s): Preparation and Use in Key Carbonylation/Carboxylation Reactions

This work was supported by the Russian Foundation for Basic Research, project # 19-73-10144

AGGREGATION OF 1,5-DI(PYRENYL-1)PENTANE IN AQUEOUS ORGANIC MEDIA

This work was supported by Science Foundations (Grant # 21-13-00304) and Grants Council of the President of the Russian Federation (NSh-2700.2020.3

Platinum(II) Acetylacetonate Complex Based on 5-(3-Aminophenyl)-2-(2-thienyl)pyridine: Synthesis, Crystal Structure, and Photophysical Properties

Abstract: The Pt(II) acetylacetonate complex [(L)Pt(Acac)] based on aminophenyl-substituted 2-(2-thienyl)pyridine (L) was synthesized, its photophysical properties were studied and compared with these properties for a similar complex containing no amino group in the ligand. The structure of the complex was confirmed by X-ray diffraction (CIF file CCDC no. 2144689), 1H and 13C NMR spectroscopy, ESI mass spectrometry, and elemental analysis. © 2022, Pleiades Publishing, Ltd.Russian Science Foundation, RSF: 18-73-10119-PThis study was supported by the Russian Science Foundation (grant no. 18-73-10119-P)

Synthesis of meso-2,2’-bipyridyl-substituted calix[4]arenes and their response to metal cations

A convenient synthetic approach to meso-substituted with 2,2’-bipyridine and 1-(pyridin-2-yl)isoquinoline residues calix[4]arenes is reported. This approach involves the reaction of generated in situ 2-lithio-calix[4]arene with 1,2,4-triazine precursor with the following aromatization of the obtained adduct, and the aza-Diels-Alder reaction of the 1,2,4-triazinyl-substituted calix[4]arene with 2,5-norbornadien or in-situ generated 1,2-dehydrobenzene. The UV/fluorescence response of thus obtained meso-pyridyl-substituted calix[4]arenes to metal cations is studied

Urea-containing oligomers/polymers as chemosensors for visual detection of phosphate anions

Isomeric urea-containing polymeric/oligomeric chemosensors for anions were prepared by means of interaction of isomeric diaminobihenyls with triphosgene. An intensive "turn-on"fluorescence response toward phosphate anion in solutions was observed. © 2021 Author(s).Russian Foundation for Basic Research, РФФИ, (19-53-55002)This work was supported by Russian Foundation for Basic Researches (Grant # 19-53-55002)