Zobrazeno 1 - 10
of 42
pro vyhledávání: '"Natalya A. Vodolazkaya"'
Autor:
Olena M. Obukhova, Nikolay O. Mchedlov-Petrossyan, Natalya A. Vodolazkaya, Leonid D. Patsenker, Andrey O. Doroshenko
Publikováno v:
Colorants; Volume 1; Issue 1; Pages: 58-90
The equilibrium between different tautomers that can be colored or colorless is an important feature for rhodamine dyes. Presently, this phenomenon is mostly discussed for rhodamine B. Herein, we studied the tautomerism and acid–base dissociation (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8bcc6bb863dde01092431deef449d491
Autor:
Irina V. Omelchenko, Nikolay O. Mchedlov-Petrossyan, Klaus Steinbach, Oleg V. Shishkin, Natalya A. Vodolazkaya, Sergey V. Shekhovtsov, Denis V. Samoylov
Publikováno v:
Coloration Technology. 134:390-399
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::78cbbba602ac12889152829538a170cb
https://doi.org/10.1111/cote.12351
https://doi.org/10.1111/cote.12351
Publikováno v:
Journal of Molecular Liquids. 225:696-705
The four-step dissociation of two fluorescein dyes bearing the amino group in 4′- and 5′-positions of the phthalic moiety was studied in water. The constants describing the equilibria H4R2 + ⇄ H3R+ ⇄ H2R ⇄ HR− ⇄ R2 − were determined u
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7cebb9e479c10888c14bb32cf82c7649
https://doi.org/10.1016/j.molliq.2016.10.121
https://doi.org/10.1016/j.molliq.2016.10.121
Autor:
Nikolay O. Mchedlov-Petrossyan, Tatiana A. Cheipesh, Natalya A. Vodolazkaya, Andrey O. Doroshenko, Alexander D. Roshal
Publikováno v:
Methods and applications in fluorescence. 4(3)
Among the vast set of fluorescein derivatives, the double charged R2- anions of aminofluoresceins are known to exhibit only low quantum yields of fluorescence, [Formula: see text]. The [Formula: see text] value becomes as high as that of the fluoresc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d5aa1cef2ddfdfe32d0c912d0d063040
https://pubmed.ncbi.nlm.nih.gov/28355149
https://pubmed.ncbi.nlm.nih.gov/28355149
Publikováno v:
Journal of Molecular Liquids. 187:381-388
The stepwise ionization H 2 R ⇄ HR − ⇄ R 2 − of six halogenated fluorescein dyes was studied by vis spectroscopy. The ‘apparent’ p K a a values were determined in the reversed Aerosol OT (AOT) microemulsion in n -octane at a water:surfact
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::797fd07b1774754dce627994268da0fd
https://doi.org/10.1016/j.molliq.2013.08.018
https://doi.org/10.1016/j.molliq.2013.08.018
Publikováno v:
Electroanalysis
Electroanalysis, Wiley-VCH Verlag, 2013, 25 (12), pp.2595-2603. ⟨10.1002/elan.201300415⟩
Electroanalysis, Wiley-VCH Verlag, 2013, 25 (12), pp.2595-2603. ⟨10.1002/elan.201300415⟩
International audience; Pt mu disc electrodes have been modified by mesoporous organosilica thin films by electrochemically assisted self-assembly (EASA) of mercaptopropyltrimethoxysilane (MPTMS), tetraethoxysilane (TEOS), and the surfactant cetyltri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6b8fdf22c0d49e4f8442bd65af106a91
https://doi.org/10.1002/elan.201300415
https://doi.org/10.1002/elan.201300415
Autor:
Andriy Marynin, Elena N. Obukhova, Leonid D. Patsenker, Natalya A. Vodolazkaya, B. M. Krasovitskii, Nikolay O. Mchedlov-Petrossyan, Andrey O. Doroshenko
Publikováno v:
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy. 170
Rhodamine dyes are widely used as molecular probes in different fields of science. The aim of this paper was to ascertain to what extent the structural peculiarities of the compounds influence their absorption, emission, and acid-base properties unde
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b730f5fe19c414c6c9a1c40a65257bea
https://pubmed.ncbi.nlm.nih.gov/27423469
https://pubmed.ncbi.nlm.nih.gov/27423469
Autor:
Yuriy N. Surov, Natalya V. Salamanova, Nikolay O. Mchedlov-Petrossyan, Natalya A. Vodolazkaya, Andrey O. Doroshenko
Publikováno v:
Journal of Molecular Liquids. 157:105-112
Stepwise ionization and tautomerism of fluorescein (Fl) and its 2,7-dichloroderivative (2,7-DCFl) were studied using vis-spectroscopy in AOT-stabilized reversed microemulsions of water in n-octane (water:surfactant ratio W = 20). The ‘apparent’ p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cb9e18aed63e2e50e0452b3a4c1688ad
https://doi.org/10.1016/j.molliq.2010.08.013
https://doi.org/10.1016/j.molliq.2010.08.013
Autor:
Wei-Chuan Sun, Nikolay O. Mchedlov-Petrossyan, Kyle R. Gee, Yuliya A. Gurina, Natalya A. Vodolazkaya
Publikováno v:
The Journal of Physical Chemistry B. 114:4551-4564
The stepwise ionization (H(3)R(+)==H(2)R==HR(-)==R(2-)) of four fluorescein fluoro derivatives was studied by visible spectroscopy. The pK(a) values were determined in water, in 50 mass % aqueous ethanol, in oil-in-water microemulsions (benzene + CTA
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::186da4429e8b48844b8e5628a115c31c
https://doi.org/10.1021/jp909854s
https://doi.org/10.1021/jp909854s
Autor:
Nikolay O. Mchedlov-Petrossyan, Natalya V. Salamanova, Yuliya A. Gurina, Natalya A. Vodolazkaya
Publikováno v:
Journal of Molecular Liquids. 145:188-196
Lyophilic nanosized aqueous dispersions belong to organized solutions widely used as media for various chemical reactions. Stepwise ionization and tautomerism of Fluorescein and its ten derivatives and one thio-analogue were studied by using Vis-spec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::097f2c1c90b6c919f708986cccf6afb6
https://doi.org/10.1016/j.molliq.2008.11.007
https://doi.org/10.1016/j.molliq.2008.11.007