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Solid solution structural engineering enhances the luminescence of SrMgAl10O17:Cr3+ for agricultural lighting / Y. Ma, W. Liao, B. Quan [et al.] // J. Lumin. - 2024. - Vol. 270. - Ст. 120553, DOI 10.1016/j.jlumin.2024.120553. - Cited References: 46. - The authors would like to gratefully acknowledge funds from the Key R & D Projects in Hunan Province (2021SK2047, 2022NK2044), the Wangcheng Science and Technology Plan (KJ221017), the Science and Technology Innovation Program of Hunan Province (2022WZ1022). The work was supported by the Ministry of Science and Higher Education of the Russian Federation as part of the World-class Research Center program: ‘‘Advanced Digital Technologies’’, contract no. 075-15-2020-935. Research Foundation of Education Bureau of Hunan Province, China (22B0211) . - ISSN 0022-2313. - ISSN 1872-7883
Кл.слова (ненормированные):
Optical material -- Indoor plant cultivation -- Far-red light -- SrMgAlO
Аннотация: Lead-free non-rare earth oxide phosphors have attracted wide attention due to their environmental protection, sustainability, and potential to replace halides and fluorides in the field of plant lighting. Among them, the Cr3+-excited aluminate phosphor exhibits high brightness, high thermal stability, and far red to near-infrared (NIR) emission due to the influence of the crystal field strength (CFS). This property gives rise to a variety of strategies used to modulate the CFS, for example, single ion substitution, chemical unit co-substitution, etc. Here, we chose the substitution of a single ion, with [BaO6] gradually replacing [SrO6] to form a solid solution. Their structural characteristics and the local structure of Cr3+ are studied and discussed. The device is packaged to evaluate the feasibility of the material for practical application. The prepared phosphor had a bright far-red light emission of 693 nm under blue light excitation, and this spectrum strongly matched the absorption of plant phytochrome PFR. This work provides the design principle of far red light emission activated by Cr3+ aluminate solid solution, which can inspire further research on pc-LED lights for plant lighting.

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Держатели документа:
School of Chemistry and Materials Science, Hunan Agricultural University, Changsha 410128, PR China
Hunan Optical Agriculture Engineering Technology Research Center, Changsha 410128, PR China
World-Class Research Center “Advanced Digital Technologies”, University of Tyumen, Tyumen 625003, Russia
Dongguan Ledstar Optoelectronics Technology Co., Ltd, Dongguan, 523000, PR China

Доп.точки доступа:
Ma, Y.; Liao, W.; Quan, B.; Kong, Z.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Zolotov, A.; Cheng, M.; Chen, X.; Zhou, Zh.; Xia, M.
}
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Parshin, A. M.
Optical transmission modulation and spectral properties of self-organized nematic domains / A. M. Parshin, V. Ya. Zyryanov, V. F. Shabanov // Opt. Mater. - 2024. - Vol. 150. - Ст. 115232, DOI 10.1016/j.optmat.2024.115232. - Cited References: 24 . - ISSN 0925-3467. - ISSN 1873-1252
Кл.слова (ненормированные):
Nematic domains -- Magnetic field -- Electric field -- Light modulation -- Transmission spectrum
Аннотация: The modulation and spectral characteristics of self-organized ensembles of nematic domains with the disclination lines non-aligned and aligned in a magnetic field have been studied using an electric field. The obtained experimental voltage dependences of the light transmission agree well with the dependences calculated using the model considerations. These dependences have been compared with the electro-optical characteristics of a homogeneous planar nematic layer. The amplitude component of the optical transmission determined by light scattering and the oscillating component caused by the phase modulation have been examined. The effect of the spectral dispersion of transmission on the electro-optical characteristics of domain ensembles has been evaluated.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, 50/38 Akademgorodok, Krasnoyarsk, 330036, Krasnoyarsk region, Russia
Siberian Federal University, 79 Svobodny Pr., Krasnoyarsk, 660041, Krasnoyarsk region, Russia

Доп.точки доступа:
Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; Shabanov, V. F.; Шабанов, Василий Филиппович; Паршин, Александр Михайлович
}
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Characterizing aptamer interaction with the oncolytic virus VV-GMCSF-Lact / M. A. Dymova, D. O. Malysheva, V. K. Popova [et al.] // Molecules. - 2024. - Vol. 29, Is. 4. - Ст. 848, DOI 10.3390/molecules29040848. - Cited References: 46. - This study was supported by the Russian Science Foundation grant No. 22-64-00041, available online: https://rscf.ru/en/project/22-64-00041/ (accessed on 6 February 2024). This work was supported by the Russian state-funded project for ICBFM SB RAS (grant number 121030200173-6) . - ISSN 1420-3049
Кл.слова (ненормированные):
aptamer -- oncolytic virus -- glioma -- dynamic light scattering -- microscale thermophoresis
Аннотация: Aptamers are currently being investigated for their potential to improve virotherapy. They offer several advantages, including the ability to prevent the aggregation of viral particles, enhance target specificity, and protect against the neutralizing effects of antibodies. The purpose of this study was to comprehensively investigate an aptamer capable of enhancing virotherapy. This involved characterizing the previously selected aptamer for vaccinia virus (VACV), evaluating the aggregation and molecular interaction of the optimized aptamers with the recombinant oncolytic virus VV-GMCSF-Lact, and estimating their immunoshielding properties in the presence of human blood serum. We chose one optimized aptamer, NV14t_56, with the highest affinity to the virus from the pool of several truncated aptamers and built its 3D model. The NV14t_56 remained stable in human blood serum for 1 h and bound to VV-GMCSF-Lact in the micromolar range (Kd ≈ 0.35 μM). Based on dynamic light scattering data, it has been demonstrated that aptamers surround viral particles and inhibit aggregate formation. In the presence of serum, the hydrodynamic diameter (by intensity) of the aptamer–virus complex did not change. Microscale thermophoresis (MST) experiments showed that NV14t_56 binds with virus (EC50 = 1.487 × 109 PFU/mL). The analysis of the amplitudes of MST curves reveals that the components of the serum bind to the aptamer–virus complex without disrupting it. In vitro experiments demonstrated the efficacy of VV-GMCSF-Lact in conjunction with the aptamer when exposed to human blood serum in the absence of neutralizing antibodies (Nabs). Thus, NV14t_56 has the ability to inhibit virus aggregation, allowing VV-GMCSF-Lact to maintain its effectiveness throughout the storage period and subsequent use. When employing aptamers as protective agents for oncolytic viruses, the presence of neutralizing antibodies should be taken into account.

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Держатели документа:
Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences, Lavrentiev av. 8, 630090 Novosibirsk, Russia
Department of Natural Sciences, Novosibirsk State University, Pirogova str. 1, 630090 Novosibirsk, Russia
State Research Center of Virology and Biotechnology “Vector”, 630559 Koltsovo, Russia
Laboratory for Biomolecular and Medical Technologies, Krasnoyarsk State Medical University Named after Prof. V.F. Voyno-Yasenetsky, Partizana Zheleznyaka str. 1, 660022 Krasnoyarsk, Russia
Federal Research Center KSC SB RAS, 50 Akademgorodok, 660036 Krasnoyarsk, Russia
Kirensky Institute of Physics, 50/38 Akademgorodok, 660012 Krasnoyarsk, Russia

Доп.точки доступа:
Dymova, M. A.; Malysheva, D. O.; Popova, V. K.; Dmitrienko, E. V.; Endutkin, A. V.; Drokov, D. V.; Mukhanov, V. S.; Byvakina, A. A.; Kochneva, G. V.; Artyushenko, P. V.; Shchugoreva, I. A.; Rogova, A. V.; Tomilin, F. N.; Томилин, Феликс Николаевич; Kichkailo, A. S.; Richter, V. A.; Kuligina, E. V.
}
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    Structure-based machine learning enables discovery of Mn4+-activated red-light fluorides for ultrawide-gamut mini-light-emitting diodes / Yu. Wang, W. Tang, Ch. Zhang [et al.] // Adv. Funct. Mater. - 2024. - Vol. 34, Is. 14. - Ст. 2313490, DOI 10.1002/adfm.202313490. - Cited References: 61. - This research was financially supported by the National Key R& D Program of China (Grant No. 2022YFB3503800) and the National Natural Science Foundation of China (Grant Nos. 52202170 and 52322208). This research was supported by the Tyumen Oblast Government, as part of the West-Siberian Interregional Science and Education Center's project No. 89-DON (3) . - ISSN 1616-301X. - ISSN 1616-3028
   Перевод заглавия: Структурное машинное обучение позволяет обнаружить Mn4+-активированные фториды красного света для мини-светодиодов со сверхширокой гаммой
Кл.слова (ненормированные):
fluorides -- mini-light-emitting diodes -- Mn4+ -- red light -- wide-gamut displays
Аннотация: Mn4+-activated fluorides with a saturated red color and sharp line emission are ideal for applications in the light-emitting diodes (LEDs) backlight for displays. However, the emissions attributed to 2E→4A2 parity and spin-forbidden transitions limit the design and adjustments of emission wavelength and chromaticity coordinates. Herein, machine learning algorithms are used to build a wavelength-prediction model for Mn4+-activated fluorides. The model precisely identifies the key structural features that affect wavelengths and discovers target materials. The predicted candidate Cs2NaAlF6:Mn4+ (CNAF) with a long-wavelength zero-phonon-line emission at 628 nm exhibits a redshift in comparison with other reported Mn4+-activated fluorides and commercial K2SiF6:Mn4+, but maintains narrow spectral emission with full-width half maximum (FWHM) of 11.2 nm. The redshift and narrow spectra result in a color purity of 99.7% and Commission Internationale de L'Eclairage (CIE) chromaticity coordinate of (0.7032,0.2967) that is close to the pure red-light point of Recommendation BT. 2020 (Rec. 2020). Moreover, CNAF is prepared as a transparent red-light film, and the device fabricated using the blue-light mini-LEDs, green quantum-dot film, and CNAF film exhibits a wide color-gamut of 121.5% National Television Standards Committee (NTSC) or 90.6% Rec. 2020, suggesting that CNAF has potential for wide-color-gamut displays.

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Держатели документа:
School of Physics and Optoelectronics, South China University of Technology, Guangzhou 510641, P. R. China
State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, P. R. China
Laboratory of Crystal Physics, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk 660036, Russia
Department of Engineering Physics and Radioelectronic, Siberian Federal University, Krasnoyarsk 660041, Russia
Laboratory of Theory and Optimization of Chemical and Technological Processes, University of Tyumen, Tyumen 625003, Russia
Guangdong-Hong Kong-Macao Joint Laboratory for Intelligent Micro-Nano Optoelectronic Technology, School of Physics and Optoelectronic Engineering, Foshan University, Foshan 528225, China

Доп.точки доступа:
Wang, Yuanjing; Tang, Wenyu; Zhang, Chuang; Molokeev, M. S.; Молокеев, Максим Сергеевич; Ming, Hong; Zhou, Yayun; Peng, Shuai; Song, Enhai; Zhang, Qinyuan
}
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Absorption spectra of the purple nonsulfur bacteria light-harvesting complex: A DFT study of the B800 part / L. V. Begunovich, E. A. Kovaleva, M. M. Korshunov, V. F. Shabanov // J. Photochem. Photobiol. A: Chem. - 2024. - Vol. 450. - Ст. 115454, DOI 10.1016/j.jphotochem.2023.115454. - Cited References: 42. - This work was supported by the state assignment of the Ministry of Science and Higher Education of the Russian Federation. Authors would like to thank Information Technology Centre, Novosibirsk State University for providing access to their supercomputers. L.V.B. would like to thank Irkutsk Supercomputer Center of SB RAS for providing the access to HPC-cluster «Akademik V.M. Matrosov» (Irkutsk Supercomputer Center of SB RAS, Irkutsk: ISDCT SB RAS; http://hpc.icc.ru, accessed 20.10.2023) . - ISSN 1010-6030. - ISSN 1873-2666
Кл.слова (ненормированные):
Photosynthesis -- LH2 -- Light harvesting -- Rhodoblastus acidophilus -- Bacteriochlorophyll -- DFT -- DFTB -- Optical spectra
Аннотация: We’ve studied the B800 part of Rhodoblastus acidophilus light-harvesting complex (LH2) by several quantum chemical techniques based on the density functional theory (DFT) and determined the specific method and a minimal reliable model suitable for further studies of the LH2. In addition to bacteriochlorophyll a molecules, the minimal model includes two α and one β chain amino acids. Within the model, we are able to reproduce the contribution of the B800 ring of nine bacteriochlorophyll a molecules to the near infrared Qy absorption band. We also discuss the use of hybrid DFT calculations for precise energy and optical estimations and DFT-based tight binding (DFTB) method for the large-scale calculations. Crucial importance of Hartree-Fock exchange interaction for the correct description of B800 peak position was shown.

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Держатели документа:
Federal Research Center KSC SB RAS, Krasnoyarsk, Russia
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russia

Доп.точки доступа:
Begunovich, L. V.; Kovaleva, E. A.; Korshunov, M. M.; Коршунов, Максим Михайлович; Shabanov, V. F.; Шабанов, Василий Филиппович
}
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Tikhomirov, A. A.
Photo-biological effectiveness of PAR for radish plant communities irradiated using an LED source with an adjustable spectrum / A. A. Tikhomirov, M. S. Molokeev, V. V. Velichko // Light Eng. - 2024. - Vol. 32, Is. 2. - P. 70–77, DOI 10.33383/2023-063. - Cited References: 15. - The study was carried out with financial support within the framework of State Assignment 121101300066-7 of the Ministry of Education and Science and the Strategic Academic Leadership Program "Priority-2030" for the Siberian Federal University . - ISSN 0236-2945. - ISSN 2541-9935
Кл.слова (ненормированные):
spectral composition of radiation -- spectral effectiveness of radiation -- variable radiation spectrum -- fluorescent LEDs -- radish productivity
Аннотация: The aim of the current study was to find the most effective spectral modes of irradiation of short-season plants (for example, radish) using a fluorescent LED irradiator with a variable spectrum. The research methodology was based on the species-specific response of plants to the spectral composition of light. Photo-biological experiments were carried out to find effective spectral composition of PAR for cultivating radish communities under stable and variable irradiation modes of electrical lighting. It was shown that under stable irradiation modes, the highest productivity of economically useful radish biomass had been achieved at spectral composition with a maximum of 60 % radiation in the (600–700) nm region in a variable spectral irradiation mode. The variable spectral irradiation mode turned out to be the most effective when the spectral composition with the dominance of red rays was changed to the spectral composition with the dominance of blue rays. There were no significant differences between the best production parameters for stable and variable modes of irradiation of radish plants, which indicates the expediency of choosing the stable spectral mode of irradiation of radish plants as a short-season crop under electrical illumination. The results obtained can be used to select spectral irradiation modes for short-season plants grown under electrical lighting in northern regions and in isolated rooms in various climatic zones using "City-farm" technologies.

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Держатели документа:
Biophysics Institute of the Siberian branch of Russian Academy of Sciences, Krasnoyarsk, Russia
Reshetnyov Siberian State University of Science and Technology, Krasnoyarsk, Russia
Institute of Physics SB RAS, Krasnoyarsk, Russia
Siberian Federal University, Krasnoyarsk, Russia

Доп.точки доступа:
Molokeev, M. S.; Молокеев, Максим Сергеевич; Velichko, V. V.
}
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Near-unity PLQY and high anti-thermal quenching red luminescence from one-dimensional hybrid manganese chloride for efficient and stable white light-emitting diodes / B. Su, M. S. Molokeev, R. Chen, T. Zhang // J. Mater. Chem. C. - 2024, DOI 10.1039/D4TC01477D. - Cited References: 46 . - Article in press. - ISSN 2050-7526. - ISSN 2050-7534
Аннотация: The discovery of novel Mn2+-based metal halides with excellent luminescence properties and thermostability is particularly of great importance for solid-state lighting (SSL). Herein, a novel one-dimensional hybrid manganese chloride (TMA)MnCl3 of a hexagonal system with a P63/m space group is synthesized via a simple saturation crystallization method. Under 443 nm excitation, (TMA)MnCl3 single crystals exhibit a strong broad-band red emission peak at 645 nm originating from the 4T1 → 6A1 transition of Mn2+ ions with a full width at half maximum of 99 nm and a photoluminescence quantum yield (PLQY) of 98.6%. Moreover, (TMA)MnCl3 shows a high anti-thermal quenching behavior, and the integrated PL intensity still retains 100% of the initial intensity measured at 300 °C, caused by the high structural rigidity. Benefiting from its strong blue light excitation, high PLQY, and excellent thermal stability, a stable white light-emitting diode device is fabricated by combining a 465 nm blue LED chip, green-emitting Lu3Al5O12:Ce3+ and the (TMA)MnCl3 red phosphor with a high color rendering index of 94.3% and a correlated color temperature of 3995 K. This work develops a novel hybrid manganese chloride red-emitter and paves a new path to explore high-performance phosphors excited by blue light for SSL.

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Держатели документа:
School of Materials Science and Engineering, Xi’an University of Science and Technology, Xi’an, Shaanxi, P. R. China
Laboratory of Crystal Physics, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk 660036, Russia
Department of Engineering Physics and Radioelectronics, Siberian Federal University, Krasnoyarsk 660041, Russia
Research and Development Department, Kemerovo State University, Kemerovo, Russia

Доп.точки доступа:
Su, B.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Chen, R.; Zhang, T.
}
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Light-driven anisotropy of 2D metal-organic framework single crystal for repeatable optical modulation / Yu. A. Kenzhebayeva, N. K. Kulachenkov, S. S. Rzhevskiy [et al.] // Commun. Mater. - 2024. - Vol. 5, Is. 1. - Ст. 48, DOI 10.1038/s43246-024-00485-5. - 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 . - ISSN 2662-4443
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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Держатели документа:
School of Physics and Engineering, ITMO University, St Petersburg, 197101, Russia
Postovsky Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, Ekaterinburg, 620137, Russia
Center for Advancing Electronics, Technische Universitat Dresden, 01069, Dresden, Germany
Otto H. York Department of Chemical and Materials Engineering, New Jersey Institute of Technology, University Heights, Newark, NJ, 07102, USA
South Ural State University, Chelyabinsk, 454080, Russia
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russia
Nikolaev Institute of Inorganic Chemistry SB RAS, Novosibirsk, 630090, Russia
Institut Jean Lamour, Universit de Lorraine, UMR CNRS 7198, 54011, Nancy, France

Доп.точки доступа:
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.; Крылов, Александр Сергеевич; Pavlov, D. I.; Fedin, V. P.; Potapov, A. S.; Milichko, V. A.
}
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    Machine-learning-driven discovery of Mn4+-doped red-emitting fluorides with short excited-state lifetime and high efficiency for mini light-emitting dIode displays / H. Ming, Ya. Zhou, M. S. Molokeev [et al.] // ACS Mater. Lett. - 2024. - Vol. 6. - P. 1790-1800, DOI 10.1021/acsmaterialslett.4c00263. - Cited References: 39. - This work was financially supported by the National Key Research and Development Program of China (No. 2022YFB3503800), National Natural Science Foundation of China (Grants Nos. 52202170 and 52322208), Natural Science Foundation of Guangdong Province (No. 2022A1515140032) and Distinguished Youth Foundation of Guangdong Scientific Committee (No. 2023B1515020059). This work was also supported by the Tyumen Oblast Government, as part of the West-Siberian Interregional Science and Education Center’s Project No. 89-DON (3). H. Ming acknowledges the fellowship support from the China Scholarship Council (CSC No. 202206150038) . - ISSN 2639-4979
   Перевод заглавия: Открытие на основе машинного обучения фторидов красного излучения, легированных Mn4+, с коротким временем жизни в возбужденном состоянии и высокой эффективностью для мини-светодиодных дисплеев
Аннотация: The discovery of high-efficiency Mn4+-activated fluoride red phosphors with short excited-state lifetimes (ESLs) is urgent and crucial for high-quality, wide-color-gamut display applications. However, it is still a great challenge to design target phosphors with both short ESL and high luminescence efficiency. Herein, we propose an efficient machine learning approach based on a small dataset to establish the ESL prediction model, thereby facilitating the discovery of new Mn4+-activated fluorides with short ESLs. Such a model can not only accurately predict the ESLs of Mn4+ in fluorides but also quantify the impact of structure features on ESLs, therefore elucidating the “structure-lifetime” correlations. Guided by the correlations, two new Mn4+-doped tetramethylammonium (TMA)-based hybrid fluorides (TMA)2BF6:Mn4+ (B = Sn or Hf) with both short ESLs (τ ≤ 3.7 ms) and high quantum efficiencies (internal QEs ˃ 92%, external QEs ˃ 55%) have been discovered successfully. A prototype displayer with excellent performance (∼124% National Television Standards Committee (NTSC) color gamut) is assembled by employing a (TMA)2SnF6:Mn4+-based white Mini-LED backlight module, demonstrating its practical prospects in high-quality displays. This work not only brings promising candidates for Mn4+-doped fluoride phosphors but also provides a valuable reference for accelerating the discovery of new promising phosphors.

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Держатели документа:
State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, and Guangdong Engineering Technology Research and Development Center of Special Optical Fiber Materials and Devices, South China University of Technology, Guangzhou 510641, China
School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China
International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba 305-0047, Japan
Laboratory of Crystal Physics, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk 660036, Russia
Laboratory of Theory and Optimization of Chemical and Technological Processes, University of Tyumen, Tyumen 625003, Russia
Institute of Engineering Physics and Radioelectronics, Siberian Federal University, Krasnoyarsk 660041, Russia
School of Physics and Optoelectronics, South China University of Technology, Guangzhou 510641, China
Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials and College of Materials, Xiamen University, Xiamen 361005, China
Guangdong-Hong Kong-Macao Joint Laboratory for Intelligent Micro-Nano Optoelectronic Technology, School of Physics and Optoelectronic Engineering, Foshan University, Foshan 528225, China

Доп.точки доступа:
Ming, H.; Zhou, Ya.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Zhang, Ch.; Huang, L.; Wang, Yu.; Sun, H.-T.; Song, E.; Zhang, Q.
}
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10.

    Паршин, Александр Михайлович.
    Структурные, магнитные, электрические и оптические когерентности в самоорганизованных ансамблях нематических доменов / А. М. Паршин // Жидк. крист. и их практич. использ. - 2023. - Т. 23, № 2. - С. 71-80 ; Liq. Cryst. Appl., DOI 10.18083/LCAppl.2023.2.71. - Библиогр.: 34 . - ISSN 1991-3966. - ISSN 2499-9644
   Перевод заглавия: Structural, magnetic, electric and optical coherences in self-organized ensembles of nematic domains
Кл.слова (ненормированные):
нематик -- поликарбонат -- магнитное поле -- электрическое поле -- интенсивность света -- nematic liquid crystal -- polycarbonate -- magnetic field -- electric field -- light intensity
Аннотация: Исследованы структурные, магнито- и электрооптические свойства самоорганизованного ансамбля нематических доменов, сформированных на пленке поликарбоната в присутствии остаточного растворителя. Пленка наносилась на одну из плоскопараллельных стеклянных пластин жидкокристаллической ячейки. Магнитное поле, стабилизирующее планарную ориентацию жидкого кристалла, прикладывалось параллельно, а переориентирующее электрическое поле направлялось перпендикулярно поверхностям ячейки. Получены зависимости интенсивности прошедшего через доменный ансамбль света от электрического напряжения при различных фиксированных значениях магнитного поля. Проведено сравнение экспериментальных зависимостей с расчетными, определенными с использованием процедуры минимизации свободной энергии жидкого кристалла, с хорошим совпадением результатов. Из сопоставления структурной, магнитной и электрической длин когерентностей оценено взаимное влияние структурных элементов ансамбля и эффекты фазовой модуляции света.
Structural, magneto- and electro-optical properties of a self-organized ensemble of nematic domains (SEND) formed on a polycarbonate film in the presence of a residual solvent have been studied. The film was deposited on one of the plane-parallel glass plates of a liquid-crystal cell. The magnetic field stabilizing the planar orientation of the liquid crystal was applied in parallel, while the reorienting electric field was directed perpendicular to the cell surfaces. The dependences of the intensity of light transmitted through the domain ensemble on the electric voltage are obtained for various fixed values of the magnetic field. The experimental dependences are compared with the calculated ones determined using the procedure for minimizing the free energy of the liquid crystal, with good agreement between the results. From a comparison of the structural, magnetic, and electrical coherence lengths, the mutual influence of the structural elements of the ensemble and the effects of phase modulation of light are estimated.

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Держатели документа:
Институт физики им. Л. В. Киренского, Федеральный исследовательский центр «Красноярский научный центр Сибирского отделения Российской академии наук», Красноярск, Россия
Сибирский Федеральный Университет, Красноярск, Россия

Доп.точки доступа:
Parshin, A. M.

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