Article
Engineering, Electrical & Electronic
V. Ravisankar, V. Ramesh, B. Gunasekaran, Suresh Perumal, P. Karuppasasmy, T. Kamalesh
Summary: A novel single crystal of barium (II)-dibenzo-15-crown-5-ether-zinc (II)-tetra-thiocyanate was synthesized using the slow evaporation method at ambient temperature. The crystallography structural information was confirmed by single-crystal X-ray diffraction pattern, and the crystalline planes were investigated by powder XRD studies. The material's functional groups and optical properties were analyzed.
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Chemistry, Inorganic & Nuclear
Biing-Chiau Tzeng, Chi-Chung Liao, Peng-Yuan Jung, Si-Ying Chen, Bing-Jian Sun, Wei-Chung Cheng, Agnes H. H. Chang, Gene-Hsiang Lee
Summary: The Pt(II) complexes with strong stacking tendency in the solid state and rich luminescence are potential candidates for new mechanochromic materials and sensing applications. Six mononuclear complexes and one dinuclear complex were synthesized and their structures were characterized by X-ray diffraction. Different intermolecular Pt(II) contacts and luminescent properties were observed for these complexes.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Lin Xiang, Wang Luo, Zhi-Yuan Yue, Yi-Fang Huang, Na Wang, Le-Ping Miao, Heng-Yun Ye, Chao Shi
Summary: Molecule-based switchable dielectrics with distinct changes of dielectric constant under external stimuli are technologically important. In this study, a new crown-ether clathrate was synthesized and found to exhibit reversible phase transition and bistable dielectric response.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Kamilla M. Alves, Joao Honorato, Luciano M. Liao, Vivianne S. Velozo-Sa, Adriana P. M. Guedes, Jocely de L. Dutra, Alejando P. Ayalla, Javier Ellena, Alzir A. Batista, Pablo J. Goncalves
Summary: This study synthesized, characterized, and tested the cytotoxicity of four new palladium/pyridylporphyrin complexes. The complexes showed selective indexes close to 1.2 against breast cancer cells, and interacted moderately with CT-DNA through hydrogen bonding, π-π stacking, and electrostatic interactions.
DALTON TRANSACTIONS
(2021)
Article
Biochemistry & Molecular Biology
Alexey A. A. Bezdomnikov, Liudmila I. I. Demina, Lyudmila G. G. Kuz'mina, Galina V. V. Kostikova, Valeriy I. I. Zhilov, Aslan Yu. Tsivadze
Summary: The extraction of lithium from aqueous solutions using B15C5 in [C8mim][NTf2] was studied. Complexes of LiNTf2 with B15C5 were isolated and characterized for the first time. Differences in the extraction process of LiCl and LiNTf2 were determined via infrared spectroscopy.
Article
Chemistry, Applied
Xu Zhang, Limiao Shi, Mark A. Fox, Adam Barlow, Mahbod Morshedi, Marie P. Cifuentes, Mark G. Humphrey, Olivier Mongin, Frederic Paul, Christine O. Paul-Roth
Summary: The synthesis of a series of four porphyrin derivatives based on a meso-tetrafluorenylporphyrin core functionalized with organoruthenium endgroups is reported. The multipolar assemblies show potential electron-donors at the periphery and potential electron-acceptors at the central core. The extended networks incorporating polarizable organometallic units behave as nonlinear absorbers in the near-IR range, and the role of peripheral transition metal centers on the third-order NLO properties is discussed.
Article
Polymer Science
Zhitao Hu, Xiaohui Cao, Xiaohui Zhang, Bin Wu, Wenjun Luo, Huahua Huang, Le Li, Yongming Chen
Summary: A fast and controlled ring-opening polymerization method was reported to prepare PEG-like polyesters, poly(O-15C5), with potential biodegradability and improved immune responses.
Article
Chemistry, Physical
Dilawar Singh Sisodiya, Sk. Musharaf Ali, Anjan Chattopadhyay
Summary: Computational studies were conducted on the trans & RARR; cis and cis & RARR; trans isomerizations of photoresponsive azobis(benzo-15-crown-5). The photoexcited & pi; & pi;* state(S-2) of the trans isomer relaxes through the planar S-2 minimum and the planar S-2/S-1 conical intersection, both situated below the vertically excited S-2 state. The n & pi;* state (S-1) of this isomer has both planar and rotated minima, which may lead to a torsional conical intersection (S-0/S-1) geometry.
JOURNAL OF PHYSICAL CHEMISTRY A
(2023)
Article
Engineering, Chemical
Yu Dong, Qing Zhu, Wenhao Zou, Junkai Fang, Zhengjin Yang, Tongwen Xu
Summary: The separation of lithium isotopes through membrane-based technologies is a challenging research direction due to the similarities in physicochemical properties of 6Li+ and 7Li+. In this study, we developed a dibenzo-15-crown-5-based polymeric membrane, PIM-DB15C5-TB, for lithium isotope separations. The membrane exhibited good 6Li+/7Li+ selectivity and abundant free volumes for 6Li+/7Li+ transport. By applying this membrane in electrodialysis, a 6Li+/7Li+ selectivity of 1.16 was achieved. This work proposes a strategy for developing polymeric membranes for selective separation of lithium isotopes.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Environmental
Tuo Xin, Rongkun Zhou, Qiuju Xu, Xiangcheng Yuan, Zilong Zheng, Yiqing Li, Qi Zhang, Jinzhang Liu
Summary: This study explores the improvement of zinc anode performance in aqueous rechargeable zinc-ion batteries by adding the organic additive 15-crown-5 ether (15-CE-5) into the electrolyte. The experimental results show that the modified electrolyte with the optimal concentration of 15-CE-5 enhances the performance of the zinc anode, leading to longer cycle life and stable capacity.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Inorganic & Nuclear
Biing-Chiau Tzeng, Chung-Lun Wu, Jun-Wei Hung, Su-Ying Chien, Gene-Hsiang Lee
Summary: The reaction of potassium (aza-15-crown-5)dithiocarbamate with Au, Ag, and Cu metals was studied, resulting in different coordination systems, and the size of alkaline metal ions has a significant impact on the structures.
DALTON TRANSACTIONS
(2022)
Article
Nanoscience & Nanotechnology
Atazaz Ahsin, Tabish Jadoon, Khurshid Ayub
Summary: Alkalides, obtained by doping alkali metals with crown ethers, have shown promise as nonlinear optical materials with high static and frequency-dependent nonlinearities. Density functional theory calculations confirm their thermodynamic stability and excellent electronic and optical properties.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2022)
Article
Electrochemistry
Tatiana V. Shishkanova, Natalie Stepankova, Martin Tlusty, Tomas Tobrman, Bronislav Jurasek, Martin Kuchar, Miroslava Trchova, Premysl Fitl, Martin Vrnata
Summary: The aim of this study is to develop an impedimetric sensor based on host-guest interaction for detecting new psychoactive substances. The synthesized material forms hydrogen bonds with the analytes, which is crucial for obtaining useful analytical signals. The study successfully quantified synthetic cathinones and 2-aminoindane in specified concentration ranges.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Physical
Levon S. Atabekyan, Vitaly G. Avakyan, Alexander K. Chibisov, Vyacheslav N. Nuriev, Alexey V. Medvedko, Alexander V. Koshkin, Sergey P. Gromov
Summary: This study investigated the photoprocesses of DSB and its complexes with barium and lead perchlorate in MeCN, revealing the most efficient intersystem crossing in the lead perchlorate complex. Quantum chemistry methods were used to calculate the geometry, structure, and transition energies of DSB, as well as the orbital structures of the complexes with barium cation, leading to conclusions about the possibility of a [2 + 2]- photocycloaddition reaction.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2021)
Article
Telecommunications
Muyiwa Balogun, Stanislav Derevyanko
Summary: NFT is a new field of optical communications that can resist nonlinearity and dispersion, using orthogonal Hermite-Gaussian spectral forms as waveform carriers to improve system performance. The proposed multiplexing scheme outperforms current NFT systems in terms of spectral efficiency and bit error rate when neglecting the effects of inline noise.
IEEE COMMUNICATIONS LETTERS
(2022)
Article
Chemistry, Inorganic & Nuclear
Kirill P. Birin, Ivan Shlykov, Ivan N. Senchikhin, Liudmila Demina, Yulia G. Gorbunova, Aslan Yu Tsivadze
Summary: The post-modification of UiO-type materials with a porphyrin bearing phosphonic acid moieties has been reported for the first time. The prolonged interaction of UiO-66 and tetrakis(4-phosphonatophenyl)porphyrinato nickel(II) resulted in the formation of a hybrid material with preserved crystallinity. The hybrid material was characterized and found to maintain thermal stability up to 400 degrees C, with the weight ratio of the grafted porphyrin estimated to be approximately 18%.
Article
Chemistry, Inorganic & Nuclear
Alexander G. Martynov, Marina A. Polovkova, Gayane A. Kirakosyan, Evgeny N. Zapolotsky, Sergey P. Babailov, Yulia G. Gorbunova
Summary: This study investigates the structural assignments of Ln(2)[(15C5)4Pc]3 complexes using NMR relaxation and paramagnetic lanthanide induced shifts (LIS) data. The analysis reveals isostructurality in the complete series of triple-decker complexes in solution. DFT calculations for model complexes with methoxy-substituted ligands show good agreement with experimental NMR data.
Editorial Material
Chemistry, Multidisciplinary
Yu. G. Gorbunova, V. P. Fedin, V. A. Blatov
RUSSIAN CHEMICAL REVIEWS
(2022)
Article
Chemistry, Inorganic & Nuclear
A. A. Sinelshchikova, Yu. Yu. Enakieva, M. S. Grigoriev, Yu. G. Gorbunova
Summary: Two hydrogen-bonded organic frameworks were synthesized under solvothermal conditions. The stability of the frameworks is maintained by the formation of numerous hydrogen bonds, and the negative charge in the frameworks is compensated by dimethylammonium cations.
JOURNAL OF STRUCTURAL CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Alexander A. Dmitrienko, Andrey P. Kroitor, Liudmila Demina, Yulia G. Gorbunova, Alexander B. Sorokin, Alexander G. Martynov
Summary: In this study, an extensive study on the replacement of axial ligands in ruthenium(II) complexes with tetra-tert-butyl-phthalocyanine was reported. By performing oxidative decarbonylation and heating reactions, different N-donor ligands were successfully introduced into the complexes. A simplified TD-DFT method was used to explain the difference in UV-Vis spectra of the synthesized complexes. The findings provide a convenient way for the selective synthesis of ruthenium phthalocyaninates carrying N-donor aromatic ligands.
Article
Biochemistry & Molecular Biology
Evgeniya A. Safonova, Filipp M. Kolomeychuk, Daniil A. Gvozdev, Aslan Yu. Tsivadze, Yulia G. Gorbunova
Summary: This study demonstrated, for the first time, the efficient singlet oxygen (SO) generation ability of P(V) phthalocyanines (Pcs), specifically unsubstituted and alpha- and beta-octabutoxy-substituted P(V)Pcs. The photophysical and photochemical properties of these compounds can be fine-tuned by varying the substituents in the Pc ring and P(V) axial ligands. The introduction of electron-donating butoxy groups, especially in the alpha-position, increased the photostability of P(V)Pcs. Furthermore, the photostability depended on the nature of axial ligands, with higher stability observed in the order of OPh < OMe < OH for beta-BuO-substituted P(V)Pcs.
Article
Chemistry, Analytical
Elizaveta Kozhina, Sergey Bedin, Alexander Martynov, Stepan Andreev, Alexey Piryazev, Yuri Grigoriev, Yulia Gorbunova, Andrey Naumov
Summary: The most relevant technique for portable (on-chip) sensors is Surface Enhanced Raman Scattering (SERS). This strategy fails for large molecules and nano-objects, whose SERS spectra are irreproducible at low concentrations. SERS-mapping is proposed as a solution to this problem. The distributions of SERS parameters for small (malachite green (MG)) and large (phthalocyanine, H2Pc*) molecules are analyzed, showing negligible fluctuations for small MG and noticeable distribution for large H2Pc* due to random arrangement of molecules with respect to hot spot areas.
Article
Chemistry, Analytical
Irina I. Shepeleva, Kirill P. Birin, Daria A. Polivanovskaia, Alexander G. Martynov, Alexander V. Shokurov, Aslan Yu. Tsivadze, Sofiya L. Selektor, Yulia G. Gorbunova
Summary: Detection of nitroaromatic compounds (NAC) is important due to their hazardous nature. A new pyrene-imidazoporphyrin dyad is reported to exhibit an unusual 'turn-on' response to NAC with the appearance of a new band attributed to exciplex emission. The dyad's porphyrin backbone allows for ratiometric detection using its own fluorescence as an internal reference signal. Association constants of the dyad are reported to be in the order of 10(4) M-1.
Article
Chemistry, Inorganic & Nuclear
Maxim A. Faraonov, Alexander G. Martynov, Marina A. Polovkova, Salavat S. Khasanov, Yulia G. Gorbunova, Aslan Yu. Tsivadze, Akihiro Otsuka, Hideki Yamochi, Hiroshi Kitagawa, Dmitri V. Konarev
Summary: Two forms of binuclear heteroleptic triple-decker terbium(III) phthalocyaninate have been synthesized, including a solvent-free powder and a crystal solvate. The crystal structure shows different Tb-N distances and a twist angle between the outer and inner decks. The magnetic properties reveal single-molecule magnet behavior in both forms, but with different dynamic characteristics.
Article
Chemistry, Inorganic & Nuclear
Alexander G. Martynov, Anna E. Ovchenkova, Pavel V. Dorovatovskii, Marina A. Polovkova, Anna E. Ovchenkova, Kirill P. Birin, Gayane A. Kirakosyan, Yulia G. Gorbunova, Aslan Yu. Tsivadze
Summary: The stabilization of different conformers of crown- and butoxy-substituted Tb(III) and Y(III) trisphthalocyaninates by altering the solvation environment has been demonstrated through crystallographic characterization, analysis of intermolecular solvent-solvate interactions, and NMR characterization. Solvation-induced conformational switching can be used to control the magnetic properties of lanthanide trisphthalocyaninates.
INORGANIC CHEMISTRY
(2023)
Article
Biochemistry & Molecular Biology
Alexander G. Martynov, Kirill P. Birin, Gayane A. Kirakosyan, Yulia G. Gorbunova, Aslan Yu. Tsivadze
Summary: We report the synthesis of isomeric heteronuclear terbium and yttrium triple-decker phthalocyaninates, which undergo solvation-induced switching between different conformations. By analyzing the H-1 NMR spectra, we determine that the axial component of the magnetic susceptibility tensor is particularly sensitive to conformational switching when terbium is placed in the switchable M site. This result provides a new tool for controlling the magnetic properties of lanthanide complexes with phthalocyanine ligands.
Article
Biochemistry & Molecular Biology
Stepan M. M. Korobkov, Kirill P. P. Birin, Anatole N. N. Khodan, Oleg Yu. Grafov, Yulia G. G. Gorbunova, Aslan Yu. Tsivadze
Summary: A method for successfully grafting unsymmetrical A(2)BC-type 5,15-bis(4-butoxyphenyl)-10-(4-carboxyphenyl)-20-(phenanthrenoimidazolyl)-porphyrin onto the surface of nanostructured aluminum oxyhydroxide modified with a single SiO2 layer (NAOM) has been developed. This method allows for the preparation of a new porphyrin-containing hybrid material through a straightforward surface modification procedure of NAOM. The 3D heterostructure obtained was extensively characterized using XPS, TEM, and diffuse reflectance spectroscopy, and the stability of the material against leaching as well as the porphyrin immobilization ratio of approximately 14% by weight were revealed.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Multidisciplinary
Elena E. Bardina, Eugeniya V. Makotchenko, Kirill P. Birin, Iraida A. Baidina, Taisiya S. Sukhikh, Alexander S. Novikov, Yulia G. Gorbunova, Aslan Yu. Tsivadze, Artem L. Gushchin
Summary: In this study, a new gold(iii) complex [Au(TBPP)][AuCl4] (1) was synthesized and characterized. The crystal structure of 1 and two other crystalline phases were analyzed, revealing weak intermolecular interactions between the [Au(TBPP)](+) cationic complex and [AuCl4](-) anions, HOAc molecules, and neighboring [Au(TBPP)](+) cations. Density functional theory calculations confirmed the noncovalent nature of these interactions.
Article
Chemistry, Inorganic & Nuclear
Ekaterina A. Zhigileva, Yulia Yu. Enakieva, Anna A. Sinelshchikova, Vladimir V. Chernyshev, Ivan N. Senchikhin, Konstantin A. Kovalenko, Irina A. Stenina, Andrey B. Yaroslavtsev, Yulia G. Gorbunova, Aslan Yu. Tsivadze
Summary: Herein, a novel anionic hydrogen-bonded organic framework (HOF-IPCE-1Pd) based on a new complex of palladium(ii) with meso-tetrakis(4-(phosphonatophenyl))porphyrin is reported. The framework shows high crystallinity, simple synthetic procedure, and is easily regenerated. The directed structural transformation of the framework and the absorption of ammonia and water molecules led to the formation of a more hydrolytically stable structure (HOF-IPCE-1Pd-NH3) with a proton conductivity of 1.27 x 10(-3) S cm(-1) at 85 degrees C and 85% RH, which is one of the highest among all known porphyrin-based HOFs. It is noteworthy that the reversible absorbance of water/ammonia molecules preserves the crystal structure of HOF-IPCE-1Pd-NH3.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Inorganic & Nuclear
Marina V. Volostnykh, Gayane A. Kirakosyan, Anna A. Sinelshchikova, Polina A. Loboda, Pavel V. Dorovatovskii, Maxim A. Mikhaylov, Aslan Yu. Tsivadze, Maxim N. Sokolov, Yulia G. Gorbunova
Summary: This study reports the coordinated design and synthesis of stable supramolecular cluster-porphyrin (CP) hybrids based on an octahedral molybdenum(ii) iodide cluster and a ruthenium porphyrin. The supramolecular assembly of the cluster with the porphyrin has been studied, and the formation of discrete cluster-porphyrin adducts with different numbers of coordinated porphyrins has been observed. The coordination-based supramolecular approach provides new stable cluster-multiporphyrin arrays, which can be promising for the design of photoactive materials.
DALTON TRANSACTIONS
(2023)
