Author: Uladzimir Bildziukevich

0000000000661475

AUTHOR

Uladzimir Bildziukevich

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Spectral and microscopic study of self-assembly of novel cationic spermine amides of betulinic acid

2016

Supramolecular characteristics of two spermine amides of betulinic acid (1 and 2) were studied by measuring and evaluating their UV-VIS-NIR spectra in aqueous acetonitrile and DOSY-NMR spectra in tetradeuteromethanol, accompanied by atomic force microscopy (AFM) images, scanning electron microscopy (SEM) micrographs, and transmission electron microscopy (TEM) micrographs. Fibrous supramolecular self-assembly of 1 and 2 was observed by AFM images, as well as by the SEM and TEM micrographs. Bathochromic shifts of the absorbance maximum at 870nm to 1015-970nm in the UV-VIS-NIR spectra were observed with increasing water content in the acetonitrile/water systems, indicating formation of fibrous…

Magnetic Resonance SpectroscopyScanning electron microscopeClinical BiochemistrySupramolecular chemistrymacromolecular substancesDOSY-NMRMicroscopy Atomic Force010402 general chemistry01 natural sciencesBiochemistryAbsorbancechemistry.chemical_compoundEndocrinologyMicroscopy Electron TransmissionBathochromic shiftBetulinic AcidAcetonitrileta116Molecular BiologyPharmacologyAqueous solutionMolecular Structure010405 organic chemistryChemistryOrganic Chemistryta1182technology industry and agricultureAmidesTriterpenes0104 chemical sciencesCrystallographyTransmission electron microscopySEMTEMSpermineMicroscopy Electrochemical ScanningAFMPentacyclic TriterpenesChirality (chemistry)Steroids

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PEPhysical Sciences and Engineering
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