Белоусов Юрий Александрович
Базовая кафедра неорганической химии и материаловедения Института общей и неорганической химии им. Н.С. Курнакова РАН
Профессиональные интересы
Должности
- Доцент — Базовая кафедра неорганической химии и материаловедения Института общей и неорганической химии им. Н.С. Курнакова РАН
Био
- · Начал работать в НИУ ВШЭ в 2020 году.
Образование
- 2013 · Кандидат наук
- 2008 · Специалитет: Московский государственный университет им. М.В. Ломоносова, специальность «Химия», квалификация «Химик»
Опыт работы
- · 2013 г: с Химический факультет МГУ им.Ломоносова, инженер (2013-2014), научный сотрудник (2014-2019), старший преподаватель( с
- · 2019г: )
- · 2014-2017: преподаватель химии школа №171 с углубленным изучением химии
- · 2017 г: с Физический институт им. П.Н.Лебедева РАН, научный сотрудник
Награды и поощрения
- · Надбавка за публикацию в журнале из Списка А (и приравненном к нему научном издании) (2025–2026, 2024–2025, 2023–2024)
- · Надбавка за публикацию в международном рецензируемом научном издании (2022–2023, 2021–2022)
- · Лучший преподаватель — 2023–2025
Гранты и проекты
- — · на соискание учёной степени кандидата наук
Идентификаторы исследователя
- ORCID:
0000-0002-4976-4437 - ResearcherID:
O-4904-2016 - Google Scholar: https://scholar.google.com/citations?hl=ru&user=BAWmkm0AAAAJ
Публикации (24)
Why europium acylpyrazolonates are bad phosphors: lessons learned from the study of ionic and polymer complexes [MLnQ4], M = NEt4 +, Ag+
2026 · ARTICLE · en
Our series of works on acylpyrazolonates of lanthanides has shown that although these beta-diketonate ligands are effective in sensitizing the luminescence of Tb3+, Dy3+, Sm3+ ions, and IR-emitting Yb3+, there is typically a sharp drop in efficiency in the case of Eu3+. To investigate this phenomenon, three series of complexes of samarium, europium, and gadolinium with the ligand 4-benzoyl-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one (HQPh) were synthesized, namely [LnQ3(H2O)(dmf)] (Ln-1) (dmf = N,N-dimethylformamide), [NEt4][LnQ4] (Ln-2), and {AgLnQ4}n (Ln-3). The structure of the compounds was determined by single-crystal X-ray diffraction analysis, which showed that series Ln-1 consists of molecular complexes held together by hydrogen bonds, series Ln-2 consists of ionic crystals, and series Ln-3 consists of coordination polymers in which silver ions are coordinated by nitrogen atoms of the pyrazole rings, forming infinite chains. The study of optical properties revealed that for europium ions, efficient quenching occurs through an LMCT state, with the highest efficiency observed for the complex Eu-1. The transition from the ammonium salts Sm-2, Eu-2 to the heterometallic complexes Sm-3 and Eu-3 is also accompanied by some unexpected luminescence quenching.
Cyclometalated iridium(III) complexes with acyl-pyrazolone ligands – towards tunable versatile building blocks and AIE emitters with external chelating fragments
2026 · ARTICLE · en
Development of stimuli-responsive emissive materials is of great importance, and design of transition metal complexes with varying number of external chelating fragments may contribute to this field. In this work, three bis-cyclometalated iridium complexes with 2-acyl-pyrazolone ligands in both metalated and ancillary modes were synthesized and studied by various spectroscopic techniques, single-crystal X-ray diffraction and cyclic voltammetry. It was shown that the complex with cyclometalated acyl-pyrazolone (and thus, two external diketonate sites) is non-luminescent in solution, but demonstrates aggregation-induced emission. In turn, complexes with ancillary acyl-pyrazolone (and one external diketonate site, respectively) possess bright emission in the visible region, which is tunable by replacement of the cyclometalated counterpart and reversibly quenched by protonation/deprotonation. The experimental study was corroborated by quantum chemical calculations, which showed that spin density localization at the triplet excited state plays crucial role in emissive properties of the target complexes.
Sensitivity-Range Integral (SRI): A Novel Approach to Evaluating and Optimizing Luminescent Thermometers. Case Study of Thermometric Properties Governed by Intermolecular CT States in Isomeric Eu/Tb Coordination Compounds
2026 в печати · ARTICLE · en
The design of lanthanide-based molecular thermometers remains a major challenge, as their temperature sensitivity is strongly governed by subtle structural factors and the presence of competing relaxation pathways. A novel metric to compare application potential was proposed: Sensitivity−Range Integral (SRI). The SRI accounts both for sensitivity and operating range, providing clearer performance insights. In this work, we investigate Eu3+, Tb3+, and mixed-metal Eu/Tb coordination compounds [LnL3(bipy)] with two structurally isomeric ligands: 4,4,4-trifluoro-1-(1-methyl-1H-pyrazol-3-yl)butane-1,3-dione (HL1 ) and 4,4,4-trifluoro-1-(1-methyl-1H-pyrazol-5-yl)butane-1,3-dione (HL2 ). Both ligand isomers form neutral mononuclear complexes with square-antiprismatic Ln3+ coordination environments, but distinct intermolecular interactions enable different intermolecular charge-transfer (CT) states, which modulate the temperature-dependent luminescence response. Mixed-metal Eu/Tb complexes show excellent relative thermal sensitivities 6.0%×K –1 for Eu/TbL1 and 8.5%×K –1 for Eu/TbL2 . The achieved SRI values for the investigated compounds are the highest among any earlier reported thermometers: 734% for Eu/TbL1 and 970% for Eu/TbL2 . These results highlight the crucial role of ligand design and CT states in tuning the performance of molecular luminescent thermometers and provide design guidelines for the next generation of lanthanide-based optical sensors.
Thermodynamic vs. kinetic control: Case study of Eu(III) molecular and polymer β-diketonate complexes
2025 · ARTICLE · en
Crystal engineering of lanthanide coordination compounds plays crucial role in the design of emitters with set properties. Reaction of Eu(OH)3 and 4,4,4-trifluoro-1-(1,5-dimethyl-1H-pyrazol-4-yl)butane-1,3-dione (HL) in various media led to the formation of 8 new crystal structures with the general formula [Eu(L)3(Solv1 )x](Solv2 )y, where Solv1 , Solv2 and x, y vary in the choice of solvent (Solv = MeOH, EtOH, i-PrOH, n-PrOH, i-BuOH, n-BuOH, t-BuOH, H2O) and x = 1, 2; y = 0, 1. Moreover, a linear polymer with the formula [Eu(L)3(H2O)]n was isolated from its ethanol solution. The nature of the solvent plays crucial role in the crystal engineering of molecular Eu3+ diketonates. Molecular complexes were confirmed to be kinetic products of the reaction that undergo transformation to thermodynamically stable polymer complex [Eu(L)3(H2O)]n. Variation of the alcohol steric hindrance results in redistribution of Stark subbands and Eu3+ lifetimes, allowing for fine tuning of the luminescent properties of the complexes. Our findings pave the way for selective synthesis of novel materials for optoelectronics and biomedicine.
Real world luminescence thermometry through a novel mixed-metal Eu/Tb complex with furan-containing 1,3-diketone
2025 · ARTICLE · en
This study explores the effects of minor chemical structure modifications on the thermometric performance of a novel mixed-metal complex [Tb0.94Eu0.06L3(TPPO)2] (HL – 4,4,4-trifluoro-1-(furan-2-yl)butan-1,3- dione, TPPO – triphenylphosphine oxide). By replacing NO3 with an HL anion, we observed a significant enhancement in the complex’s luminescent properties, including a shift in the high-sensitivity temperature range from 250 K to 150 K and a 3.3-fold increase in the relative thermal sensitivity (Sr). The modified behavior of the charge transfer (CT) state improved the energy transfer efficiency between Eu3+ and Tb3+ ions. Additionally, a convolutional neural network (CNN) was employed to analyze temperature-dependent luminescence data under real-world conditions, yielding superior accuracy and precision to conventional methods. This combination of structure variation and machine learning advances the potential of luminescent thermometers in real-world applications.
Combining materials design and deep learning: AI-enhanced luminescence thermometry with a novel Eu3+/Tb3+polymeric coordination compound
2025 · ARTICLE · en
Conventional thermal sensors often face limitations due to their reliance on direct contact and restricted measurement ranges, leading to the emergence of novel techniques like luminescence thermometry. However, sensitivity of luminescent thermometers is limited by the only used Boltzmann-based Mott–Seitz model, which is imperfect. To overcome this, we complemented Mott–Seitz model applying machine learning algorithms, achieving supreme accuracy improvement. Thus, here we report a combined approach to luminescence thermometry, utilizing novel mixed-metal polymer Eu3+/Tb3+ tris-complex and a deep learning algorithm. The complex, synthesized using 4,4,4-trifluoro-1-(5,5-dimethyl-1H-pyrazol-4-yl)butane-1,3-dione, exhibits maximum relative thermal sensitivity of 5.5% K−1 and a temperature uncertainty ranging from 0.1 to 1.8 K across a wide temperature range (190 to 300 K). We enhanced accuracy seven-fold from RMSE 2.54 K for the conventional intensity ratio method to RMSE 0.36 K for combined method using convolutional neural network. These results highlight the potential of combined approach to achieve record-high precision thermometers even for common compounds.
Exploring the luminescent and thermometric potentials of samarium(iii) diketonate complexes with extended fluoroalkyl chains
2025 · ARTICLE · en
We synthesized and investigated a new series of Sm3+ 1,3-diketonate complexes with CnF2n+1-homologous thiophene-containing ligands. A clear correlation was found between the number of fluorine atoms in the 1,3-diketone's carbon chain and the luminescent properties of the samarium(III) complexes. The ligand modification method employed facilitates targeted and significant enhancements in the photoluminescence quantum yield (PLQY). Notably, the PLQY value peaked at 5.2% for the complex with n = 4 before decreasing with longer chains, a trend contrasting with that observed for Eu and Nd complexes. Temperature-dependent shifts in the CIE coordinates were observed, making these compounds suitable as luminescent thermometers with a sensitivity of 2.2% K−1 and resolution of 0.2 K at 120 K
Precision across temperatures: Eu/Tb luminescent thermometer with exceptionally high and stable sensitivity from 180 to 320 K
2024 · ARTICLE · en
Luminescence thermometry, leveraging the temperature-dependent luminescent properties of coordination compounds, offers precise and remote temperature measurement. However, many existing luminescent thermometers exhibit a narrow peak in temperature sensitivity, restricting their effective operating range. In this study, we synthesized new complexes [LnL2(NO3)(TPPO)2], where Ln = Eu (1), Tb (2), Gd (3), Tb0.94Eu0.06 (4), (HL - 4,4,4-trifluoro-1-(furan-2-yl) butan-1,3-dione, TPPO - triphenylphosphine oxide, which demonstrate an exceptionally wide and stable range of maximum temperature sensitivity of 3 %×K−1, spanning from 180 to 320 K. Furthermore, the temperature uncertainty remained low and stable across the same temperature region, ensuring reliable measurements. An unusual behavior was observed in the ion-to-ion energy transfer process rate constant, which exhibited an additional peak between 120 and 180 K. This phenomenon warrants further investigation to fully understand the underlying mechanisms. The obtained results allow for creation of new highly efficient luminescent thermometers tailored for specific complex applications, including cryobiology and microfluidics
Dynamics of the Ligand Excited States Relaxation in Novel β-Diketonates of Non-Luminescent Trivalent Metal Ions
2023 в печати · ARTICLE · en
Complexes emitting in the blue spectral region are attractive materials for developing white-colored light sources. Here, we report the luminescence properties of novel coordination compounds based on the trivalent group 3, 13 metals, and the 1-phenyl-3-methyl-4-cyclohexylcarbonyl-pyrazol-5-onate (QCH) ligand. [M(QCH)3] (M = Al, Ga, and In), [M(QCH)3(H2O)] (M = Sc, Gd, and Lu), [Lu(QCH)3(DMSO)], and [La(QCH)3(H2O)(EtOH)] complexes were synthesized and structurally characterized by a single-crystal X-ray diffraction study. It has been found that the luminescence quantum yields of the ligand increase by one order of magnitude upon metal coordination. A significant correspondence between the energies of the ligand’s excited states and the luminescence quantum yields to the metal ion’s atomic numbers was found using molecular spectroscopy techniques. The replacement of the central ion with the heavier one leads to a monotonic increase in singlet state energy, while the energy of the triplet state is similar for all the complexes. Time-resolved measurements allowed us to estimate the intersystem crossing (ISC) rate constants. It was shown that replacing the Al3+ ion with the heavier diamagnetic Ga3+ and In3+ ions decreased the ISC rate, while the replacement with the paramagnetic Gd3+ ion increased the ISC rate, which resulted in a remarkably bright and room-temperature phosphorescence of [Gd(QCH)3(H2O)].
Fine-Tuning of the Optical and Electrochemical Properties of Ruthenium(II) Complexes with 2-Arylbenzimidazoles and 4,4′-Dimethoxycarbonyl-2,2′-bipyridine
2023 в печати · ARTICLE · en
A series of cyclometalated complexes of ruthenium (II) with four different substituents in the aryl fragment of benzimidazole was synthesized in order to study the effect of substituent donation on the electronic structure of the substances. The resulting complexes were studied using X-ray diffraction, NMR spectroscopy, MALDI mass spectrometry, electron absorption spectroscopy, luminescence spectroscopy, and cyclic voltammetry as well as DFT/TDDFT was also used to interpret the results. All the complexes have intense absorption in the range of up to 700 nm, the triplet nature of the excited state was confirmed by measurement of luminescence decay. With an increase in substituent donation, a red shift of the absorption and emission bands occurs, and the lifetime of the excited state and the redox potential of the complex decrease. The combination of these properties shows that the complexes are excellent dyes and can be used as photosensitizers.
Курсы (2)
-
Теоретическая неорганическая химия и химия элементов · 4 раза
2025/2026, 2024/2025, 2023/2024, 2022/2023 · Бакалавриат · рус
-
Химия элементов
2021/2022 · Бакалавриат · рус