X-band pulsed EPR at Novosibirsk Institute of Organic Chemistry
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Published in Doklady Physical Chemistry, 2012
In this paper, we studied the effect of a coordination compound introduced into the sample on the MARY spectrum of a radical ion pair with known properties
Recommended citation: Sergey N.V., Stass D.V., Burdukov A.B., Melnikov A.R., Molin Y.N. "The influence of coordination compounds on spin chemical processes in irradiated hydrocarbons" Dokl. Phys. Chem.. 2012. 442(1). P. 12-15.
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Published in Applied Magnetic Resonance, 2012
In this paper, a novel spectrometer for low-field studies in magnetically affected reaction yield (MARY) spectroscopy with fluorescence detection is described
Recommended citation: Kalneus E.V., Melnikov A.R., Korolev V.V., Ivannikov V.I., Stass D.V. "A Low-Field Magnetically Affected Reaction Yield (MARY) Spectrometer with Spectral Fluorescence Resolution" Appl. Magn. Res.. 2013. 44(1). P. 81-96.
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Published in Chemical Physics Letters, 2012
In this paper, we studied the formation and recombination of transient radical anions of Al, Ga, and In tris-8-oxyquinolinates
Recommended citation: Sergey N.V., Verkhovlyuk V.N., Kalneus E.V., Korolev V.V., Melnikov A.R., Burdukov A.B., Stass D.V., Molin Y.N. "Registration of radical anions of Al, Ga, In tris-8-oxyquinolinates by magnetosensitive and spectrally resolved recombination luminescence in benzene solutions" Chem. Phys. Lett.. 2012. 442. P. 32-37.
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Published in Doklady Physical Chemistry, 2013
In this work, we studied photo and radiation induced luminescence spectra of solutions of some donor–acceptor systems widely used in the radiation spin chemistry experiments, in particular, anthracene-DMA, p-terphenyl-DMA, and similar systems
Recommended citation: Melnikov A.R., Kalneus E.V., Korolev V.V., Dranov I.G., Stass D.V. "Exciplex formation upon recombination of radiation-generated radical ion pairs in nonpolar solutions" Dokl. Phys. Chem.. 2013. 452(2). P. 257-260.
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Published in Luminescence, 2014
In this work, we report the effect of X-irradiation on the luminescence of fungus Neonothopanus nambi. Application of X-rays does not change the emission spectrum, but after approximately 20 min of continuous irradiation, light production from unsupported mycelium starts growing
Recommended citation: Kobzeva T.V., Melnikov A.R., Karogodina T.Y., Zikirin S.B., Stass D.V., Molin Y.N., Rodicheva E.K., Medvedeva S.E., Puzyr A.P., Burov A.A., Bondar V.S., Gitelson J.I. "Stimulation of luminescence of mycelium of luminous fungus Neonothopanus nambi by ionizing radiation" Luminescence. 2014. 29(7). P. 703-710.
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Published in Photochemical Photobiological Sciences, 2014
In this paper, we shows a possibility of exciplex formation via irreversible recombination of radical ion pairs generated by X-irradiation of alkane solutions of N,N-dimethylaniline with various organic luminophores
Recommended citation: Melnikov A.R., Kalneus E.V., Korolev V.V., Dranov I.G., Kruppa A.I., Stass D.V. "Highly efficient exciplex formation via radical ion pair recombination in X-irradiated alkane solutions for luminophores with short fluorescence lifetimes" Photochem. Photobiol. Sci.. 2014. 13(8). P. 1169-1179.
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Published in Biochemistry, Biophysics and Molecular Biology, 2014
In this paper, we report the effect of X-irradiation on the luminescence of fungus Neonothopanus nambi
Recommended citation: Bondar V.S., Puzyr A.P., Burov A.E., Medvedeva S.E., Rodicheva E.K., Kobzeva T.V., Melnikov A.R., Karogodina T.Y., Zikirin S.B., Stass D.V., Molin Y.N., Gitelson J.I. "Effect of ionizing radiation on the luminescence of mycelium of luminous fungus Neonothopanus nambi" Dokl. Biochem. Biophys.. 2015. 460(1). P. 30-33.
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Published in Photochemical Photobiological Sciences, 2016
In this paper, we present a simple and universal experimental approach for the estimation of fluorescence lifetimes of X-radiation generated exciplexes
Recommended citation: Melnikov A.R., Kalneus E.V., Korolev V.V., Sherin P.S., Borovkov V.I., Stass D.V. "Estimation of the fluorescence lifetime for optically inaccessible exciplexes in nonpolar solutions under ionizing irradiation" Photochem. Photobiol. Sci.. 2016. 15(6). P. 767-778.
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Published in Zeitschrift für Physikalische Chemie, 2016
This paper describes the magnitude of magnetic field effects in exciplex emission formed by a novel acceptor-substituted diphenylacetylene and DMA
Recommended citation: Melnikov A.R., Verkhovlyuk V.N., Kalneus E.V., Korolev V.V., Borovkov V.I., Sherin P.S., Davydova M.P., Vasilevsky S.F., Stass D.V. "Estimation of the Fraction of Spin-Correlated Radical Ion Pairs in Irradiated Alkanes using Magnetosensitive Recombination Luminescence from Exciplexes Generated upon Recombination of a Probe Pair" Z. Phys. Chem.. 2016. 231(2). P. 239-267.
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Published in Dalton Transactions, 2017
This paper compares photoluminescence, radiodensity and X-ray induced luminescence properties of eight related octahedral molybdenum and tungsten cluster complexes
Recommended citation: Evtushok D.V., Melnikov A.R., Vorotnikova N.A., Vorotnikov Y.A., Ryadun A.A., Kuratieva N.V., Kozyr K.V., Obedinskaya N.R., Kretov E.I., Novozhilov I.N., Mironov Y.V., Stass D.V., Efremova O.A., Shestopalov M.A. "A comparative study of optical properties and X-ray induced luminescence of octahedral molybdenum and tungsten cluster complexes" Dalton Trans.. 2017. 46(35). P. 11738-11747.
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Published in The Journal of Chemical Physics, 2017
In this work, we propose a model for describing exciplex formation under X-ray radiation
Recommended citation: Kipriyanov A.A., Melnikov A.R., Stass D.V., Doktorov A.B. "Comparison of exciplex generation under optical and X-ray excitation" J. Chem. Phys.. 2017. 147(9). Art. Num. 094102.
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Published in The Journal of Physical Chemistry A, 2018
In this work, we show that recombination exciplexes of simple substituted diphenylacetylenes with tertiary amines can be a convenient source of tunable deep-blue emission with possible applications in organic electroluminescent systems
Recommended citation: Melnikov A.R., Davydova M.P., Sherin P.S., Korolev V.V., Stepanov A.A., Kalneus E.V., Benassi E., Vasilevsky S.F., Stass D.V. "X-ray Generated Recombination Exciplexes of Substituted Diphenylacetylenes with Tertiary Amines: A Versatile Experimental Vehicle for Targeted Creation of Deep-Blue Electroluminescent Systems" J. Phys. Chem. A. 2018. 122(5). P. 1235-1252.
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Published in The Journal of Physical Chemistry A, 2018
In this work, the radical anions of two fluorinated diphenylacetylene derivatives with nonequivalent magnetic nuclei and unknown hyperfine coupling constants were investigated by MARY spectroscopy
Recommended citation: Sannikova V.A., Davydova M.P., Sherin P.S., Babenko S.V., Korolev V.V., Stepanov A.A., Nikul’shin, P.V., Kalneus E.V., Vasilevsky S.F., Benassi E., Melnikov A.R. "Determination of Hyperfine Coupling Constants of Fluorinated Diphenylacetylene Radical Anions by Magnetic Field-Affected Reaction Yield Spectroscopy" J. Phys. Chem. A. 2019. 123(2). P. 505-516.
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Published in Inorganic Chemistry Frontiers, 2019
We present the syntheses of two new water-soluble hexarhenium cluster complexes with terminal amphiphilic phosphine ligands, and delineate their photoluminescence and X-ray excited optical luminescence (XEOL) properties
Recommended citation: Ivanov A.A., Konovalov D.I., Pozmogova T.N., Solovieva A.O., Melnikov A.R., Brylev K.A., Kuratieva N.V., Yanshole V.V., Kirakci K., Lang K., Cheltygmasheva S.N., Kitamura N., Shestopalova L.V., Mironov Y.V., Shestopalov M.A. "Water-soluble Re6-clusters with aromatic phosphine ligands – from synthesis to potential biomedical applications" Inorg. Chem. Front.. 2019. 6(4). P. 882-892.
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Published in Journal of Inclusion Phenomena and Macrocyclic Chemistry, 2019
In this work, we describe a pulsed mode of radiation generation for the NovoFEL
Recommended citation: Shevchenko O.A., Melnikov A.R., Tararyshkin S.V., Getmanov Y.V., Serednyakov S>S., Bykov E.V., Kubarev V.V., Fedin M.V., Veber S.L. "Electronic Modulation of THz Radiation at NovoFEL: Technical Aspects and Possible Applications" Materials. 2019. 12(19). Art. Num. 3063
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Published in Proceedings of the 39th International Free-Electron Laser Conference, FEL 2019, 2019
In this work, we propose a simple way of fast control of the FEL lasing which is based on periodic phase shift of electron bunches with respect to radiation stored in optical cavity
Recommended citation: Shevchenko O.A., Bykov E.V., Fedin M.V., Getmanov Y.V., Melnikov A.R., Serednyakov S.S., Tararyshkin S.V., Veber S.L. "Electronic Modulation of the FEL-Oscillator Radiation Power Driven by ERL" Proc. FEL’19. 2019. 39. P. 98-101.
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Published in Journal of Inclusion Phenomena and Macrocyclic Chemistry, 2020
The intracomplex reaction of anthraquinone-2,6-disulfonate in triplet excited state with beta-cyclodextrin and the reaction of 3AQDS:CD complex with external quencher, N-Acetyl-l-Tyrosine, have been studied using laser flash photolysis, 1H NMR and 1H CIDNP
Recommended citation: Babenko S.V., Melnikov A.R., Tsentalovich Y.P., Kruppa A.I. "Exploring the reactivity of $$\beta$$-cyclodextrin-encapsulated anthraquinone-2,6-disulfonate." J. Incl. Phenom. Macro.. 2020. 97(1). P. 121-127.
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Published in IEEE Transactions on Terahertz Science and Technology, 2020
In this work, we describe the 120-m beamline for transporting the radiation of the Novosibirsk FEL facility, consisting of three FELs of the terahertz (THz), far-infrared, and mid-infrared ranges
Recommended citation: Kubarev V.V., Sozinov G.I., Scheglov M.A., Vodopyanov A.V., Sidorov A.V., Melnikov A.R., Veber S.L. "The Radiation Beamline of Novosibirsk Free-Electron Laser Facility Operating in Terahertz, Far-Infrared, and Mid-Infrared Ranges." IEEE Trans. Terahertz Sci. Technol.. 2020. 10(6). P. 634-646.
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Published in AIP Conference Proceedings, 2020
In this work, the current status (2020) of the EPR endstation at the NovoFEL facility is described
Recommended citation: Melnikov A.R., Kiskin M.A., Getmanov Y.V., Shevchenko O.A., Fedin M.V., Veber S.L. "Technical and software improvements of the EPR spectroscopy endstation at the NovoFEL facility: Status 2020." AIP Conf. Proc.. 2020. 2299(1). Art. Num. 030010.
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Published in Optics & Laser Technology, 2021
In this work, we present the design and fabrication of multimodal hollow THz waveguides used at the X-band Electron Paramagnetic Resonance endstation of the Novosibirsk Free Electron Laser facility
Recommended citation: Melnikov A.R., Samsonenko A.A., Getmanov Y.V., Shevchenko O.A., Shevchenko D.A., Stepanov A.A., Fedin M.V., Yurkin M.A., Veber S.L. "Broadband multimodal THz waveguides for efficient transfer of high-power radiation in space-confined conditions." Opt. Laser Technol.. 2021. 143. Art. Num. 107375.
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Published in Sensors, 2021
This paper presents the use pyroelectric film sensors for detecting EPR signals
Recommended citation: Melnikov A.R., Zikirin S.B., Kalneus E.V., Ivannikov V.I., Grishin Y.A., Anisimov O.A. "Application of Pyroelectric Sensors Based on PVDF Films for EPR Spectra Detection by Heat Release." Sensors. 2021. 21(24). Art. Num. 8426.
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Published in Russian Chemical Bulletin, 2022
In this paper, we studied effects of powerful terahertz radiation on the spin state of Cu(II) based paramagnetic system
Recommended citation: Tumanov S.V., Melnikov A.R., Artiukhova N.A., Bogomyakov A.S., Shevchenko O.A., Getmanov Y.V., Ovcharenko V.I., Fedin M.V., Veber S.L. "Temperature dynamics of magnetoactive compounds under terahertz irradiation: characterization by an EPR study." Russ. Chem. Bull.. 2022. 71(7). P. 1378-1384.
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Published in The Journal of Chemical Physics, 2022
This theoretical paper describes a kinetic model of the irreversible reaction between the spin-1/2 and spin-1 particles in an encounter complex with the reactive doublet state
Recommended citation: Bagryansky V.A., Melnikov A.R., Molin Y.N., Borovkov V.I. "The role of Heisenberg spin exchange and the quantum Zeno effect in the spin-selective reaction between spin-1/2 and spin-1 particles." J. Chem. Phys.. 2023. 157(6). Art. Num. 064306.
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Published in Journal of Magnetic Resonance Open, 2022
This paper describes a homemade X-band pulsed EPR spectrometer
Recommended citation: Isaev N.P., Melnikov A.R., Lomanovich K.A., Dugin M.V., Ivanov M.Y., Polovyanenko D.N., Veber S.L., Bowman M.K., Bagryanskaya E.G. "A broadband pulse EPR spectrometer for high-throughput measurements in the X-band." J. Magn. Res. Open. 2022. 14-15. Art. Num. 100092.
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Published in Physical Chemistry Chemical Physics, 2023
In this paper, we demonstrate that the use of Carr–Parcel–Meiboom–Gill blocks followed by multiple echo integration is a promising route for sensitivity gain in pulsed EPR utilizing photo-excited triplet states
Recommended citation: Sannikova N.E., Melnikov A.R., Veber S.L., Krumkacheva O.A., Fedin M.V. "Sensitivity optimization in pulse EPR experiments with photo-labels by multiple-echo-integrated dynamical decoupling." Phys. Chem. Chem. Phys.. 2023. 25(17). P. 11971-11980.
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Published in Polymers, 2023
This work compares the performance of six different detectors, based on either LaTiO3 crystal or different polymeric films, using monochromatic radiation of the Novosibirsk Free Electron Laser facility (NovoFEL) in the frequency range of 0.9–2.0 THz
Recommended citation: Melnikov A.R., Kalneus E.V., Getmanov Y.V., Shevchenko D.A., Gerasimov V.V., Anisimov O.A., Fedin M.V., Veber S.L. "Comparative Study of Single Crystal and Polymeric Pyroelectric Detectors in the 0.9–2.0 THz Range Using Monochromatic Laser Radiation of the NovoFEL." Polymers. 2023. 15(20). Art. Num. 4124.
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Published in High Energy Chemistry, 2023
The nature of the photoprocess of Nickel(II) Diselenophosphinate in CCl4 were determined y the EPR, steady-state and time-resolved optical spectroscopy methods
Recommended citation: Mikheylis A.V., Grivin V.P., Pozdnyakov I.P., Melnikov A.A., Melnikov A.R., Sadykov E.Kh., Artem’ev A.V. "Photophysics and Photochemistry of Nickel(II) Diselenophosphinate in CCl4." High Energy Chem.. 2023. 57(3). P. S433-S440.
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Published in The Journal of Chemical Physics, 2024
In this paper, we proposed an inductive detection of temperature-induced magnetization dynamics as applied to the study of molecular spin systems and describe the general design and construction of an induction probehead
Recommended citation: Melnikov A.R., Ivanov M.Y., Samsonenko A.A., Getmanov Y.V., Nikovskiy I.A., Matiukhina A.K., Zorina-Tikhonova E.N., Voronina J.K., Goloveshkin A.S., Babeshkin K.A., Efimov N.N., Kiskin M.A., Eremenko I.L., Fedin M.V., Veber S.L. "Inductive detection of temperature-induced magnetization dynamics of molecular spin systems ." J. Chem. Phys.. 2024. 160(22). Art. Num. 224201.
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Published in The Journal of Physical Chemistry Letters, 2024
This paper describes an interesting method to compare the performance of different mocelular electron spin qubits
Recommended citation: Borodulina A.V., Melnikov A.R., Bochkin G.A., Fedin M.V., Fel’dman, E.B., Veber S.L. "Calculation of π Using a Molecular Electron Spin Qubit Implemented by Pulsed Electron Paramagnetic Resonance." J. Phys. Chem. Lett.. 2024. 15(31). P. 8026-8031.
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Published in Russian Journal of Coordination Chemistry, 2024
In this work a simple and scalable approach to obtain qubit candidates based on stable organic radical 3-carboxy-proxyl and MOF-808 framework was demonstrated
Recommended citation: Tomilov A.S., Yazikova A.A., Melnikov A.R., Smirnova K.A., Poryvaev A.S., Fedin M.V. "Scalable Approach for Grafting Qubit Candidates onto the Surface of MOF-808 Framework." Russ. J. Coord. Chem.. 2024. 50(9). P. 646-652.
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Published in Sensors, 2024
We characterized the performance of the PVDF sensor at helium temperatures.
Recommended citation: Sinelnikov A.N., Melnikov A.R., Getmanov Y.V., Kolomeec D.A., Kalneus E.V., Fedin M.V., Veber S.L. "Temperature Dependence of the Sensitivity of PVDF Pyroelectric Sensors to THz Radiation: Towards Cryogenic Applications." Sensors. 2024. 24. Art. Num. 5808.
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Published in The Journal of Physical Chemistry C, 2025
This paper is about nitric oxide (NO) in MOF-808 matrix
Recommended citation: Yazikova A.A., Tomilov A.S., Afimchenko N.A., Zilberberg I.L., Melnikov A.R., Smirnova K.A., Poryvaev A.S., Fedin M.V. "Paramagnetic Gas Adsorbed in Metal–Organic Framework: A Promising Platform for Spin Qubits Design." J. Phys. Chem. C. 2025. 129(17). P. 8455-8463.
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Published in The Journal of Applied Physics, 2025
This theoretical paper compares E2 and M1 transitions in single-molecule magnets
Recommended citation: Maryasov A.G., Melnikov A.R., Fedin M.V., Veber S.L. "Inter-Kramers electric quadrupole transitions in high-spin systems induced by resonant alternating inhomogeneous electric field." J. Appl. Phys.. 2025. 138(12). Art. Num. 123906.
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The electron paramagnetic resonance (EPR) endstation at the Novosibirsk free electron laser facility allows performing continuous wave and time-resolved EPR experiments under pulsed irradiation of the system under study by terahertz (THz, 25-111 cm−1, 90-400 μm; 0.75-3.3 THz) radiation. Recently, several improvements of experimental equipment and software have been carried out at the endstation to realize the pulsed EPR spectroscopy, including the use of THz radiation pulses. Herein, we present the current status of the EPR spectroscopy endstation. First, an X-band pulsed EPR spectrometer is described, which was developed for spin relaxation measurements and for applications in pulsed dipolar and hyperfine spectroscopy. The Atomize modular open source software is used to control the spectrometer. The software allows the operator to observe the processed signal (after Fourier transform, phase cycling, etc.) in real time, both for setting up the experiment (selection of magnetic field, setting of pulse intervals, etc.) and for monitoring the progress of the experiment. Second, two specialized probeheads are presented, which were created to perform different types of experiments under THz radiation in Faraday geometry. The first is a microwave probehead for pulsed EPR experiments, while the second allows an inductive detection of temperature-induced magnetization dynamics. To evaluate the performance, several coordination compounds were investigated using low-energy pulses of a terahertz free electron laser of the Novosibirsk free electron laser facility. These experimental capabilities were applied to investigate THz-assisted processes in a family of field-induced Co(II)-based single-ion magnets (SIMs) with S = 3/2, whose structural and magnetic properties had been thoroughly characterized in prior studies. By varying the wavelength of THz radiation, three cases were studied in detail: (i) off-resonance irradiation, (ii) THz-pumping of mS = −3/2 ↔ mS = −1/2 transitions, and (iii) THz-pumping of mS = +3/2 ↔ mS = +1/2 transitions. Experiments (i) revealed temperature-induced magnetization dynamics caused by lattice heating under THz irradiation. Experiments (ii) and (iii) clearly demonstrated direct excitation of spin transitions by THz radiation, resulting in a non-equilibrium population of the ground state. By tuning the THz wavelength, the SIM magnetization could be polarized in both directions: toward “heating” or “cooling”. In absolute values, at a base temperature of 3.4 K, THz excitation induced a 0.4 K temperature shift in the spin system. This work was supported by the Russian Science Foundation 23-73-00042.
Semester-long course of lectures and seminars, Novosibirsk State University, Department of Natural Sciences, 2021
Introduction to magnetic resonance for graduate students
Annual course of lectures and seminars, Novosibirsk State University, Department of Natural Sciences, 2022
Fundamental annual course on the structure of matter