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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Krylov A. S., Senkovska I., Kaskel S., Slysareva E. A., Krylova S. N., Yushina I. D., Vtyurin A. N.
Заглавие : Raman spectroscopy study of the switchable phases of metal-organic frameworks DUT-8
Коллективы : European conference on metal organic frameworks and porous polymers
Место публикации : 4th European conference on metal organic frameworks and porous polymers: Programme and book of abstracts. - 2021. - Ст.P-84 (S4P06). - ISBN 978-83-951195-7-6
Примечания : Cited References: 3. - Study was funded by RFBR and DFG, project number 21-52-120018
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Krylov A. S., Yushina I. D., Slyusareva E. A., Krylova S. N., Vtyurin A. N., Kaskel S., Senkovska I.
Заглавие : Raman spectroscopy study of the structural phase transitions in flexible DUT-8(Ni) under high hydrostatic pressure
Коллективы : International Conference on Metal-Organic Frameworks and Open Frameworks Compounds
Место публикации : International Conference on Metal-Organic Frameworks and Open Frameworks Compounds (MOF 2022): book of abstracts. - 2022. - P.950-951
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Krylova S. N., Zykova V. A., Senkovska I., Yushina I. D., Vtyurin A. N., Krylov A. S.
Заглавие : Low-frequency vibrational spectroscopy of DUT-8 (Me) in the open and closed pore phases
Коллективы : International Conference on Metal-Organic Frameworks and Open Frameworks Compounds
Место публикации : International Conference on Metal-Organic Frameworks and Open Frameworks Compounds (MOF 2022): book of abstracts. - 2022. - P.947
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Yushina I. D., Krylov A. S., Bol'shakov O. I., Rakitin O. A., Bartashevich E. V.
Заглавие : High-pressure transformation of dithiazolylidene-dithiazolium polyiodide with N-H…N hydrogen bond: A Raman spectroscopy study
Место публикации : Spectrochim. Acta A. - 2022. - Vol. 268. - Ст.120635. - ISSN 13861425 (ISSN), DOI 10.1016/j.saa.2021.120635
Примечания : Cited References: 24. - This work was supported by the Ministry of Science and High Education of Russian Federation, project FENU-2020-0019
Аннотация: The insight into the behavior of polyiodides under non-ambient conditions can enrich the practical applications due to obtaining materials with adjustable and tunable conducting properties. In this work Raman spectroscopy study in the range 0 – 6.5 GPa has been performed for dithiazolylidene-dithiazolium zigzag polyiodide with N-H…N hydrogen bond. Variations of band positions in the low-wavenumber region of Raman spectra have been attributed to the changes in the anionic part of the unit cell. The association of different interacting polyiodide subunits at pressure above 1.5 GPa leads to the emergence of the bands at 98 and 115 cm−1 due to consistent vibrations in the I82- zigzag. The emergence of the band at 159 cm−1 above 0.28 GPa can be assigned to N-H…N hydrogen bond vibration. The obtained results depict undergoing structure transformations: the stronger are cation…cation and anion…anion interactions the more likely is the observation of conducting properties due to the formation of polyiodide zigzag and strongly-bound hydrogen-bonded fragment.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Slyusarenko N. V., Yushina I. D., Slyusareva E. A., Golovkina E. V., Krylova S. N., Vtyurin A. N., Krylov A. S.
Заглавие : Determination of the pore direction in a crystalline metal-organic framework by Raman spectroscopy and periodic calculations based on the electron density functional theory
Колич.характеристики :10 с
Место публикации : Optoelectron. Instrum. Data Process. - 2023. - Vol. 59, Is. 6. - P.693-702. - ISSN 87566990 (ISSN), DOI 10.3103/S8756699023060134. - ISSN 19347944 (eISSN)
Примечания : Cited References: 32. - This work was supported by the Russian Foundation for Basic Research (Russian Center of Scientific Information), project no. 21-52-12018We are grateful to Dr. Irena Senkovska for the presented DUT-8 (Ni, Co) samples
Аннотация: A method for the determination of pore orientation in metal-organic framework structures by polarized Raman spectra is proposed. The method involves sensitivity of the line intensity of Raman scattering to the geometry of propagation in a crystal. The operability of the method is shown by DUT-8 (Ni, Co) crystals. The obtained results are interpreted based on analysis of symmetry and direction of vibrations within periodic calculations of the electron density functional theory. The simultaneous approach allowed us to describe the vibrations and to find the principal crystal orientation collinear to the pore direction. The information on the pore orientation is necessary for problems of adsorption and design of complex multicomponent materials based on metal-organic framework.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kenzhebayeva Yu. A., Kulachenkov N. K., Rzhevskiy S. S., Slepukhin P. A., Shilovskikh V. V., Efimova A., Alekseevskiy P., Gor G. Y., Emelianova A., Shipilovskikh S., Yushina I. D., Krylov A. S., Pavlov D. I., Fedin V. P., Potapov A. S., Milichko V. A.
Заглавие : Light-driven anisotropy of 2D metal-organic framework single crystal for repeatable optical modulation
Колич.характеристики :11 с
Место публикации : Commun. Mater. - 2024. - Vol. 5, Is. 1. - Ст.48. - ISSN 26624443 (eISSN), DOI 10.1038/s43246-024-00485-5
Примечания : Cited References: 84. - V.A.M. acknowledges the financial support from the Russian Science foundation (Grant Numb. 22-72-10027 “Flexible hybrid materials as active layer in memory devices”, work on pump-probe and nonlinear optical spectroscopuy) and the Priority 2030 Federal Academic Leadership Program. Y.A.K. acknowledges the financial support from the Russian Science foundation (Grant Numb. 19-79-10259 for transmission optical spectroscopy with heating and laser mode). S.S. acknowledges the financial support by the Government of the Russian Federation through the ITMO Fellowship and Professorship Program. P.A. acknowledge AFM Centre of ITMO University for help with the MOF mechanical characterization. Temperature-dependent SCXRD analysis was carried out at XRD facilities of NIIC operating with the support from the Ministry of Science and Higher Education of the Russian Science Federation (project 121031700321-3). The authors would like to thank Mirko Schoenitz and Irina Molodetsky for discussion of crystallographic data. A.K. acknowledges the financial support from RFBR and DFG (Grant Numb. 21-52-12018 for Raman measurements). Raman experiments have been performed in the Center of Common Use of the Krasnoyarsk Scientific Center SB RAS
Аннотация: Structural transformations of metal-organic frameworks (MOFs) go through a complex energy landscape with multiple intermediate states. Although the transformations allow controlling the functional properties of the MOFs, an imbalance between MOF flexibility and rigidity sets a fundamental barrier to achieving fast and multiple transformations. Here, we study the stimuli-responsive structural transformation in a 2D MOF assembled from paddle-wheel secondary building units joined by a semi-flexible organic ligand with 1,2,4-triazole and carboxylate groups with a rigid adamantane cage between them. The structure results in a distinctive combination of MOF flexibility and rigidity, thus, facilitating a continuous transformation driven by laser light. We reveal the laser-induced anisotropic thermal expansion nature of such transformation, initiating optical changes of the 2D MOF. The latter is utilized for fast and highly repeatable optical modulation of over 10,000 cycles. The endurance of such a 2D MOF-based optical modulator during 1 year of storage at ambient conditions paves the way to design tunable and robust MOFs for diverse applications.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Krylov A. S., Shipilovskikh S. A., Krylova S. N., Slyusarenko N. V., Timofeeva M., Kenzhebayeva Yu. A., Bachinin S. V., Yushina I. D., Cherepakhin A. V., Shestakov N. P., Nemtsev I. V., Vtyurin A. N., Milichko V. A.
Заглавие : Application of DUT-4 MOF structure switching for optical and electrical humidity sensing
Колич.характеристики :6 с
Место публикации : Dalton Trans. - 2024. - Vol. 53, Is. 8. - P.3459-3464. - ISSN 14779226 (ISSN), DOI 10.1039/D4DT00038B. - ISSN 14779234 (eISSN)
Примечания : Cited References: 37. - The authors acknowledge the support by the state assignment of the Kirensky Institute of Physics FRC KSC SB RAS, also this work was financially supported by the RFBR (Russian Foundation for Basic Research), project no. 21-52-12018. S. A. S. acknowledges the financial support by the Russian Science Foundation (chemical part, Grant No. 22-73-10069 "Design and application of flexible metal organic frameworks for photonics devices"). V.A.M. acknowledges the Priority 2030 Federal Academic Leadership Program Ivan Sergeev (student in ITMO Univ.) for supporting in IV curve analysis. Raman, FTIR and SEM experiments were performed in the Center for Common Use of the Krasnoyarsk Scientific Center SB RAS (Krasnoyarsk, Russia)
Аннотация: The threshold structural transformation of the DUT-4 metal–organic framework (MOF) from an ordered to distorted phase during exposure to ambient conditions has been revealed. The in situ X-ray diffraction analysis, in situ Raman and FTIR spectroscopy, scanning electron microscopy and synchronous thermal analysis have been used for investigation. The reversible effect of exposure time and humidity on such a phase transition has been confirmed. We also demonstrated that the observed phase transition correlated well with changes in the optical and electronic properties of DUT-4, paving the way to a new family of MOF-based phase change materials for optoelectronic applications.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Yushina I. D., Matveychuk Y. V., Krylov A. S.
Заглавие : Theoretical insights into the mechanical properties of DUT-8(Ni) MOF in the open and closed pore phases
Колич.характеристики :8 с
Место публикации : Cryst. Growth Des. - 2024. - Vol. 24, Is. 4. - P.1570-1577. - ISSN 15287483 (ISSN), DOI 10.1021/acs.cgd.3c01154. - ISSN 15287505 (eISSN)
Примечания : Cited References: 48. - The work was financially supported by the Russian Foundation for Basic Research and DFG project number no. 21-52-12018
Аннотация: Insights into the mechanical properties of DUT-8(Ni) MOF crystals capable of structural phase transitions are presented. The open and closed pore phases of DUT-8(Ni) are drastically different in their mechanical behavior. For the open-pore phase, a huge anisotropy of compressibility and shear modulus is observed, caused by the presence of two orthogonal motives formed by aromatic linkers bound with Ni atoms via Ni–O bonds. The possibility of easy shifting of linkers with breaking and formation of new Ni–O and Ni–N bonds at the application of shear stress, which is at the same time more stable at uniaxial stress, is shown on the basis of the stiffness tensor analysis. This fact assumes the flexibility of the open-pore phase crystals and their ability for structural transformation. The less prominent anisotropy of elastic moduli and the increased values of these moduli for the closed-pore phase crystals indicate the predominantly hardness and absence of flexibility of this phase.
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