V
Vitali I. Stsiapura
Researcher at Hrodna State University
Publications - 24
Citations - 1301
Vitali I. Stsiapura is an academic researcher from Hrodna State University. The author has contributed to research in topics: Quantum dot & Excited state. The author has an hindex of 11, co-authored 23 publications receiving 1166 citations. Previous affiliations of Vitali I. Stsiapura include University of Reims Champagne-Ardenne & University of Virginia.
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Journal ArticleDOI
Thioflavin T as a molecular rotor: fluorescent properties of thioflavin T in solvents with different viscosity.
Vitali I. Stsiapura,A. A. Maskevich,V. A. Kuzmitsky,Vladimir N. Uversky,Irina M. Kuznetsova,Konstantin K. Turoverov +5 more
TL;DR: The photophysical model successfully explains the fluorescent properties of ThT in solvents with different viscosities and supports the idea that the reason for the characteristic increase in the ThT fluorescence intensity accompanying its incorporation into the amyloid fibrils is determined by the rigidity of the dye environment.
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Energy Transfer in Aqueous Solutions of Oppositely Charged CdSe/ZnS Core/Shell Quantum Dots and in Quantum Dot-Nanogold Assemblies
Richard Wargnier,Alexandre Baranov,Vladimir G. Maslov,Vitali I. Stsiapura,Mikhail Artemyev,Michel Pluot,and Alyona Sukhanova,Igor Nabiev +7 more
TL;DR: In this article, the authors demonstrate that the nanoscale assemblies of water-solubilized, oppositely charged CdSe/ZnS core/shell quantum dots and of quantum dot and nanogold particles make it possible to develop FRET-based sensors with a donor quenching efficiency close to 100%.
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Computational study of thioflavin T torsional relaxation in the excited state.
Vitali I. Stsiapura,A. A. Maskevich,V. A. Kuzmitsky,Konstantin K. Turoverov,Irina M. Kuznetsova +4 more
TL;DR: According to the model, a twisted internal charge-transfer (TICT) process takes place for the ThT molecule in the excited singlet state, resulting in a transition from the fluorescent locally excited (LE) state to the nonfluorescent TICT state, accompanied by torsion angle phi growth from 37 to 90 degrees.
Journal ArticleDOI
Spectral properties of thioflavin T in solvents with different dielectric properties and in a fibril-incorporated form.
A. A. Maskevich,Vitali I. Stsiapura,Valeriy A Kuzmitsky,Irina M. Kuznetsova,Olga I. Povarova,Vladimir N. Uversky,Konstantin K. Turoverov +6 more
TL;DR: It is proposed that at phi = 90 degrees (270 degrees), the relatively low barrier (only 700 cm-1) of the internal rotation of the benzthiazole and aminobenzene rings relative to each other gives rise to a subpopulation of ThT molecules possessing a violated system of the pi-conjugated bonds of the Benzthiazolic rings.
Journal ArticleDOI
Charge transfer process determines ultrafast excited state deactivation of thioflavin T in low-viscosity solvents.
TL;DR: First direct experimental results about photoinduced TICT-state formation for Thioflavin T (ThT) confirm the earlier proposed model that twisted internal charge transfer process takes place in the excited state of the dye and that ThT behaves as a molecular rotor.