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 Найдено в других БД:Публикации Чарушина В.Н. (10)
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Общее количество найденных документов : 15
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 1-10    11-15 
1.

Вид документа : Статья из журнала
Шифр издания : 54/P 91
Автор(ы) : Kopchuk D. S., Egorov I. N., Tseitler T.A., Khasanov A. F., Kovalev I. S., Zyryanov G. V., Rusinov V. L., Chupakhin O. N.
Заглавие : Preparation of triazatriphenylene cations, promising chemosensors for nitro compounds
Место публикации : Chemistry of Heterocyclic Compounds. - 2013. - Vol.49, №3. - С. 503-505
Примечания : Библиогр.: с. 505 (10 ref.)
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): triazatriphenylene --cations--nitro compounds
\\\\expert2\\NBO\\Chemistry of Heterocyclic Compounds\\2013, v.49, N 3, p. 503-505.pdf
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2.

Вид документа : Статья из журнала
Шифр издания : 54/E 97
Автор(ы) : Khasanov A. F., Kopchuk D. S., Kovalev I. S., Taniya O. S., Giri K., Slepukhin P. A., Santra S., Rahman M., Majee A., Charushin V. N., Chupakhin O. N.
Заглавие : Extended cavity pyrene-based iptycenes for the turn-off fluorescence detection of RDX and common nitroaromatic explosives
Место публикации : New Journal of Chemistry. - 2017. - Vol. 41, № 6. - С. 2309-2320
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): pyrene (chemical)--fluorescence--rdx (cyclonite)
Аннотация: Extended cavity pyrene-based iptycenes have been synthesized by using the Diels–Alder reaction between in situ generated dehydropyrenes and anthracene. The photophysical properties and the interaction of these iptycenes with nitro-explosive components were studied both in solution and in the solid state by using fluorescence spectroscopy and X-ray crystallography, respectively. Due to the presence of both the large iptycene cavity and the central pyrene core, an unprecedently high fluorescence-quenching response towards non-aromatic and non-planar 1,3,5-trinitroperhydro-1,3,5-triazine (RDX) has been observed both in solution (with an apparent Stern–Volmer constant value aKSV up to 1.53 × 103 M−1) and in the vapor phase (50–75% fluorescence quenching of the PU films doped with chemosensors). In the case of nitroaromatic explosives, nitrobenzene (NB), 2,4-DNT, TNT, and 2,4,6-trinitrophenol (TNP or picric acid, PA), pyrene-based iptycenes also demonstrate a good fluorescence-quenching response both in solutions (with apparent Stern–Volmer constant values aKSV = 0.4–8.0 × 103 M−1) and in the vapor phase (up to 90% fluorescence quenching of the PU films doped with chemosensors). The “sphere of action” fluorescence quenching model was suggested.
\\\\Expert2\\NBO\\New Journal of Chemistry\\2017 v.41 p.2309-2320.pdf
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3.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Verbitskiy E. V., Kvashnin Y. A., Zhilina E. F., Shchepochkin A. V., Rusinov G. L., Chupakhin O. N., Charushin V. N., Baranova A. A., Khokhlov K. O., Chuvashov R. D., Schapov I. E., Yakovleva Y. A., Makarova N. I., Vetrova E. V., Metelitsa A. V.
Заглавие : Synthesis and characterization of linear 1,4-diazine-triphenylamine–based selective chemosensors for recognition of nitroaromatic compounds and aliphatic amines
Место публикации : Dyes and pigments. - 2020. - Vol. 178. - С. 108344
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): aliphatic amines--fluorescence quenching--nitroaromatic compounds--pyrazine--quinoxaline--solvatochromism
Аннотация: Novel 1,4-diazine-based dyes of the D–π–A type, possessing triphenylamine as an electron-donating group, have been developed. Fluorescence studies have demonstrated that emission of these fluorophores is sensitive towards different nitroaromatic compounds and aliphatic amines, both in solutions and in a vapor phase. Moreover, these compounds can be considered as “naked-eye” fluorescent probes for solution polarity because they possess pronounced solvatochromic properties. Therefore, these compounds have to be regarded as potential multifunctional chemosensors for monitoring hazardous organic substances.
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4.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kovalev I. S., Sadieva L. K., Taniya O. S., Volkova N.N., Minin A. S., Grzhegorzhevskii K. V., Gorbunov E. B., Zyryanov G. V., Chupakhin O. N., Charushin V. N., Tsurkan M. V.
Заглавие : Bola-type pah-based fluorophores/chemosensors: synthesis via an unusual clemmensen reduction and photophysical studies
Место публикации : Journal of photochemistry and photobiology A: Chemistry. - 2021. - Vol. 420. - С. 113466
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
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5.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kovalev I. S., Sadieva L. K., Taniya O. S., Yurk V. M., Minin A. S., Santra S., Zyryanov G. V., Charushin V. N., Chupakhin O. N., Tsurkan M. V.
Заглавие : Computer vision vs. spectrofluorometer-assisted detection of common nitro-explosive components with bola-type PAH-based chemosensors
Место публикации : RSC Advances. - 2021. - Vol. 11, № 42. - С. 25850-25857
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Computer vision (CV) algorithms are widely utilized in imaging processing for medical and personal electronics applications. In sensorics CV can provide a great potential to quantitate chemosensors' signals. Here we wish to describe a method for the CV-assisted spectrofluorometer-free detection of common nitro-explosive components, e.g. 2,4-dinitrotoluene (DNT) and 2,4,6-trinitrotoluene (TNT), by using polyaromatic hydrocarbon (PAH, PAH = 1-pyrenyl or 9-anthracenyl) – based bola-type chemosensors. The PAH components of these chemical bolas are able to form stable, bright emissive in a visual wavelength region excimers, which allows their use as extended matrices of the RGB colors after imaging and digital processing. In non-polar solvents, the excimers have poor chemosensing properties, while in aqueous solutions, due to the possible micellar formation, these excimers provide “turn-off” fluorescence detection of DNT and TNT in the sub-nanomolar concentrations. A combination of these PAH-based fluorescent chemosensors with the proposed CV-assisted algorithm offers a fast and convenient approach for on-site, real-time, multi-thread analyte detection without the use of fluorometers. Although we focus on the analysis of nitro-explosives, the presented method is a conceptual work describing a general use of CV for quantitative fluorescence detection of various analytes as a simpler alternative to spectrofluorometer-assisted methods.
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6.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Nikonov I. L., Khalymbadzha I. A., Sadieva L. K., Savchuk M. I., Starnovskaya E. S., Kopchuk D. S., Kovalev I. S., Kim G. A., Chupakhin O. N.
Заглавие : Benzo[de]naphtho[1,8-gh]quinolines: synthesis, photophysical studies and nitro explosives detection
Место публикации : Chimica Techno Acta. - 2021. - Vol. 8, № 4. - Ст.20218415
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): benzo[de]naphtha [1,8-gh]quinolones--fluorescence--sensor--explosives
Аннотация: A rational synthetic approach to substituted naphtho[1,8-gh]quinolines based on intramolecular cyclization in the presence of potassium in the series of (naphthalen-1-yl)isoquinolines is described. The photophysical properties of the obtained compounds were studied; in particular, fluorescence emission was detected in the range 454-482 nm with a quantum yield of up to 54%. We also calculated the HOMO-LUMO energies and optimized molecular structures for the resulting fluorophores. Based on the results of fluorescence titration, the Stern-Volmer constants (up to 21587 M-1) and the detection limits of nitroanalytes (up to 1.4 ppm) were calculated, confirming the possibility of their use as potential chemosensors for the visual detection of nitro-containing explosives.
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7.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Nikonov I. L., Sadieva L. K., Savchuk M. I., Starnovskaya E. S., Kopchuk D. S., Kovalev I. S., Kim G. A., Chupakhin O. N.
Заглавие : New naphtho[1,8-ef]perimidines: synthesis, fluorescence studies and application for detection of nitroanalytes
Место публикации : Chimica Techno Acta. - 2021. - Vol. 8, № 4. - Ст.20218416
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): naphtho[1,8-ef]perimidines--fluorescence--sensor--explosives
Аннотация: A rational approach to the synthesis of substituted naphtho[1,8-ef]perimidines based on SNH methodology and cyclization reaction in the series of condensed azines with naphthalene substituents was presented. Photophysical properties of the obtained fluorophores were studied, in particular, green fluorescence in the 485–536 nm range with quantum yield up to 32.4% was detected. HOMO-LUMO energy values and distributions for the new compounds were calculated by the DFT method in comparison with nitroanalytes and perylene. Based on the data obtained, as well as on the results of fluorescence titration, the possibility of using the new diazaperylenes as potential chemosensors for the visual detection of nitro-containing explosives was shown.
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8.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kovalev I. S., Sadieva L. K., Taniya O. S., Yurk V. M., Minin A. S., Kopchuk D. S., Zyryanov G. V., Charushin V. N., Chupakhin O. N.
Заглавие : Bispyrenylalkane chemosensor for the naked-eye detection of nitro-explosives
Место публикации : Chimica Techno Acta. - 2021. - Vol. 8, № 2. - С. 20218209
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): detection of explosives in aqueous media--chemical sensors--fluorescence quenching--pyrene-based fluorophores
Аннотация: Pyrene-based compounds have a great potential as fluorescent chemosensors for various analytes including common nitroexplosives, 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 subnanomolar concentrations.
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9.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kovalev I. S., Sadieva L. K., Taniya O. S., Kopchuk D. S., Zyryanov G. V., Ulomsky E. N., Rusinov V. L., Chupakhin O. N.
Заглавие : Detection of anti-viral drug riamilovir and herbicides in aqueous media by using pyrene-based fluorescent chemosensors
Место публикации : Chimica Techno Acta. - 2021. - Vol. 8, № 2. - С. 20218208
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): covid-19--riamilovir--triazavirin--detection in aqueous media--fluorescence quenching
Аннотация: 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.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kovalev I. S., Sadieva L. K., Taniya O. S., Yurk V. M., Minin A. S., Kopchuk D. S., Zyryanov G. V., Ulomsky E. N., Rusinov V. L., Charushin V. N., Chupakhin O. N.
Заглавие : Pyrene-based lipophilic/biphilic chemosensors for the fluorescence "turn-off" detection of nitroanalytes in aqueous media
Место публикации : AIP Conference Proceedings. - 2021. - Vol. 2388, № 1. - Ст.030015
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Two approaches towards “turn off” fluorescence detection of nitroanalytes (dinitro-ortho-cresol (DNOC), 2,4,6-trinitrotoluene (TNT) and Riamilovir (Triazavirin ®) are reported such as by tuning the chemosensors structure or by changing the environment. In both cases the great response was achieved with Stern-Volmer quenching constants (KSV) as high as 2.28–3.14 × 104 M−1 (for structure modification approach) and 4.67 × 105 M−1 (for changing of environment approach).
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