Article
Chemistry, Physical
Soheila Kharratian, Hakan Urey, Mehmet C. Onbasli
Summary: Magnetoplasmonic metasurface enhances Faraday effect in a wide spectral range by utilizing surface plasmon resonances, enabling new possibilities for miniaturization and practical applications of nonreciprocal photonic devices. Optimization of system configuration allows further tuning of metasurface response and operation band to achieve higher rotation values. Guidelines for designing magnetoplasmonic metasurfaces are also presented.
Article
Materials Science, Multidisciplinary
Chen Zhe, Zhu Ling, Yiji Yong, Yang Chao
Summary: Magneto-optical materials based on Tb3Ga5O12 crystals, such as Tb2.85Er0.15Ga5O12, have high transmittance, low absorption coefficient, and high Verdet constants, making them suitable for Faraday isolators.
Article
Chemistry, Inorganic & Nuclear
Silvia Ruggieri, Silvia Mizzoni, Chiara Nardon, Enrico Cavalli, Cristina Sissa, Michele Anselmi, Pier Giorgio Cozzi, Andrea Gualandi, Martina Sanadar, Andrea Melchior, Francesco Zinna, Oliver G. Willis, Lorenzo Di Bari, Fabio Piccinelli
Summary: This study synthesized and characterized three complexes and investigated their photophysical and thermodynamic properties. The results showed that the nature of the ligands had a significant impact on the properties of the complexes, and the properties of the complexes also affected their sensitization efficiency towards the metal ions. The ttaligand was found to be the optimal antenna for sensitizing Eu-(III) luminescence, while the Coum ligand sensitized better Tb-(III) luminescence.
INORGANIC CHEMISTRY
(2023)
Article
Crystallography
Valentin L. Virgil, Anamaria Hanganu, Augustin M. Madalan
Summary: Chalcones are a type of α, β-unsaturated ketones with great structural diversity and various applications. In this study, a chalcone synthesized by condensation of 2-acetylpyridine with 2-naphthaldehyde was employed for the synthesis of two mononuclear complexes. The structures of the chalcone and complexes were characterized by single-crystal X-ray diffraction, revealing that the chalcone acts as a chelating bidentate ligand. The luminescent properties of the ligand and complexes were investigated in the solid state, and it was found that the emission of Eu(III) and Tb(III) ions are influenced by the excitation wavelength.
Article
Chemistry, Inorganic & Nuclear
Ravi Yadav, Milena Dahlen, Akhil K. Singh, Xiaofei Sun, Michael T. Gamer, Peter W. Roesky
Summary: Nonanuclear zinc-gold heterobimetallic complexes were synthesized in a two-step process using carboxy-functionalized phosphine ligands. The flexibility of the ligands was crucial for aurophilic interactions, and the photoluminescence showed clear differences between the Zn-metalloligands and the Zn-Au complex.
DALTON TRANSACTIONS
(2021)
Article
Optics
Ole Krarup, Chams Baker, Liang Chen, Xiaoyi Bao
Summary: This work presents an analytical model that accounts for the impact of optical polarization on the generation of frequency sidebands in a highly nonlinear fiber. The model enables a novel all-optical technique for detecting polarization changes with higher sensitivity.
Article
Optics
Andrey A. Knyazev, Aleksandr S. Krupin, Yuriy G. Galyametdinov
Summary: Novel hybrid systems based on the poly(methyl methacrylate) (PMMA) matrix and Eu(III) and Tb(III) tris (beta-diketonates) complexes with 1,10-phenanthroline were synthesized and analyzed as light-conversion materials. Results showed that the addition of Tb(III) complex in the system increased the relative luminescence quantum yield of Eu(III) ions by 26% due to additional energy transfer. Lanthanide complexes' structural features allow for efficient doping of PMMA matrix with larger amounts of luminophores, offering broader application opportunities for coordination Ln (III) compounds as polyfunctional materials for optics and optoelectronics.
JOURNAL OF LUMINESCENCE
(2022)
Article
Chemistry, Applied
Rashid Ilmi, Danyang Zhang, Leonardo Tensi, Houda Al-Sharji, Nawal K. Al Rasbi, Alceo Macchioni, Liang Zhou, Wai-Yeung Wong, Paul R. Raithby, Muhammad S. Khan
Summary: A series of novel lanthanide metal complexes have been synthesized and characterized. These complexes exhibit good photophysical properties and can be applied as dopants in organic light-emitting diodes.
Article
Nanoscience & Nanotechnology
Kuen-Lin Chen, Ping-Huang Tsai, Chin-Wei Lin, Jian-Ming Chen, You -Jun Lin, Pradeep Kumar, Chien -Chung Jeng, Chiu-Hsien Wu, Li -Min Wang, Hsuan-Ming Tsao
Summary: In this study, we conducted an experiment for in vitro Alzheimer's disease assay using biofunctionalized magneto-plasmonic nanoparticles and magneto-optical Faraday effect. The results showed that the biofunctionalized nanoparticles effectively enhanced the detection sensitivity and agreed with the clinical samples, suggesting their potential for disease assay applications.
NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE
(2022)
Article
Chemistry, Multidisciplinary
Yuliya A. Bryleva, Alexander V. Artem'ev, Ludmila A. Glinskaya, Mariana I. Rakhmanova, Denis G. Samsonenko, Vladislav Yu. Komarov, Maxim I. Rogovoy, Maria P. Davydova
Summary: Six centrosymmetric mononuclear Eu3+ and Tb3+ complexes of the type [LnL(2)(hfac)(3)] have been synthesized using different phosphine oxide ligands, displaying bright solid-state photoluminescence. The emission spectra of Eu(iii) complexes strongly depend on the coordination environment of the Eu3+ ion, with asymmetric coordination geometry resulting in large radiative rate constants. Additionally, the crystals of the Eu(iii) and Tb(iii) complexes exhibit triboluminescence upon breaking under ambient conditions.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Inorganic & Nuclear
Alexandre Homberg, Federica Navazio, Antoine Le Tellier, Francesco Zinna, Alexandre Fuerstenberg, Celine Besnard, Lorenzo Di Bari, Jerome Lacour
Summary: This research successfully synthesized a series of chiral amide-based bis-pyridine substituted polyether macrocycles through a simple two-step synthesis protocol, with one ligand showing efficient complexation with terbium(iii) ions, leading to interesting chiroptical properties observed in absorbance and fluorescence.
DALTON TRANSACTIONS
(2022)
Article
Nanoscience & Nanotechnology
Daria O. Ignatyeva, Andrey A. Voronov, Polina Shilina, Pavel O. Kapralov, Sergey Yagupov, Yuliya A. Mogilenec, Mark B. Strugatsky, Vladimir Belotelov
Summary: The study demonstrates that optical anisotropy can enhance the magneto-optical activity if the incident light polarization and angle of incidence are properly set. The research focuses on iron borate FeBO3 crystals and shows a significant increase in magneto-optical activity, resulting in nearly 100% magneto-optical light modulation magnitude. This finding is crucial for various practical applications, including magneto-optical microscopy and pump-probe studies.
Article
Physics, Multidisciplinary
Tianming Li, Chengping Yin, Feng Wu
Summary: This letter proposes a heterojunction structure composed of a one-dimensional photonic crystal and a Weyl semimetal layer to achieve giant Faraday rotation without an external magnetic field.
Article
Materials Science, Ceramics
Yeming Zhang, Shunsuke Murai, Ayaka Maeno, Hironori Kaji, Masahiro Shimizu, Yasuhiko Shimotsuma, Zhijun Ma, Jianrong Qiu, Katsuhisa Tanaka
Summary: In this study, the application of TASB glasses in MO devices was investigated, revealing systematic variations in MO properties with B2O3 content and clarifying the effects of B2O3 on the local glass structures and Tb ion valence states. The TASB glass system showed promise for stable fiber-based Faraday effect devices due to its relatively high Verdet constant and suitable rheology.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Nanoscience & Nanotechnology
Shuang Xia, Daria O. Ignatyeva, Qing Liu, Jun Qin, Tongtong Kang, Weihao Yang, Yiqin Chen, Huigao Duan, Longjiang Deng, Di Long, Martin Veis, Vladimir Belotelov, Lei Bi
Summary: This paper reports a magneto-optical all-dielectric metasurface based on a Ce:YIG thin film and a two-dimensional array of silicon nanoresonators. Compared to a bare Ce:YIG film, the device exhibits a four times enhancement of the Faraday effect and the MO figure of merit (FOM) at a wavelength of 1370 nm. The enhanced Faraday rotation and FOM are achieved by increasing the interaction time between light and magnetic material, as indicated by the increase in local field inside the Ce:YIG film when exciting the hybrid Mie resonance-waveguide modes. This makes the dielectric MO metasurfaces promising candidates for free-space MO devices.
Article
Chemistry, Multidisciplinary
Koji Kubota, Tsubura Endo, Minami Uesugi, Yuta Hayashi, Hajime Ito
Summary: The study presents a palladium-catalyzed solid-state C-N cross-coupling of carbazoles with aryl halides via a high-temperature ball-milling technique, allowing for the efficient synthesis of N-arylcarbazole derivatives without the use of large amounts of organic solvents. Importantly, this method enables the coupling of poorly soluble aryl halides with large polyaromatic structures that are barely reactive under conventional solution-based conditions.
Article
Chemistry, Inorganic & Nuclear
Mingoo Jin, Rempei Ando, Hajime Ito
Summary: One-dimensional cationic coordination polymers can construct helical structures with different folding modes by diverse coordination geometries, leading to a change in emission wavelength in luminescent crystals.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Organic
Koji Kubota, Keisuke Kondo, Tamae Seo, Hajime Ito
Summary: This study investigates the unique reactivity of solid-state substrates and the effect of reaction temperature on the reaction rate. The results show that solid-state substrates with high melting points exhibit low reactivity, but the reaction rate can be accelerated by increasing the reaction temperature.
Article
Chemistry, Multidisciplinary
Yunpeng Gao, Chi Feng, Tamae Seo, Koji Kubota, Hajime Ito
Summary: The study demonstrates the efficient palladium-catalyzed Sonogashira coupling of solid aryl halides using high-temperature ball milling, resulting in a variety of materials-oriented polyaromatic alkynes and the synthesis of novel luminescent materials. The utility of this method is further exemplified by the rapid synthesis of a fluorescent metal-organic framework precursor, showcasing the potential of Sonogashira coupling for the preparation of functional materials.
Article
Chemistry, Physical
Mingoo Jin, Hajime Ito
Summary: This review summarizes the recent progress in stimuli-responsive mechanisms of Au(I) complexes, including crystal phase transitions and molecular rotation in crystalline media.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS
(2022)
Article
Chemistry, Multidisciplinary
Daichi Kato, Osamu Tomita, Ryky Nelson, Maria A. Kirsanova, Richard Dronskowski, Hajime Suzuki, Chengchao Zhong, Cedric Tassel, Kohdai Ishida, Yosuke Matsuzaki, Craig M. Brown, Koji Fujita, Kotaro Fujii, Masatomo Yashima, Yoji Kobayashi, Akinori Saeki, Itaru Oikawa, Hitoshi Takamura, Ryu Abe, Hiroshi Kageyama, Tatiana E. Gorelik, Artem M. Abakumov
Summary: Layered bismuth oxyhalides with bilayered (Bi2O2) fluorite slabs are promising visible-light photocatalysts due to their excellent stability and the ability to adjust band levels. Manipulating the Bi2O2 slab allows control over the structure and properties, creating new research opportunities.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Pan Gao, Julong Jiang, Satoshi Maeda, Koji Kubota, Hajime Ito
Summary: The use of calcium-based heavy Grignard reagents (R-CaX) in organic synthesis is not well-explored compared to conventional magnesium-based Grignard reagents (R-MgX). This is mainly due to the lack of a simple method to access organocalcium nucleophiles from readily available starting materials. In this study, the researchers demonstrate a mechanochemical technique using ball milling to generate calcium-based heavy Grignard reagents without complicated pre-activation processes. The method allows for the development of novel cross-electrophile-coupling reactions mediated by arylcalcium nucleophiles, which is difficult using conventional Grignard reagents.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Physical
Suguru Yoshida, Hirofumi Akamatsu, Alexandra S. Gibbs, Shogo Kawaguchi, Venkatraman Gopalan, Katsuhisa Tanaka, Koji Fujita
Summary: In this study, it is found that the competition between octahedral rotations and deformations in AgRTiO4 leads to biaxial negative thermal expansion (NTE), which is different from conventional materials. The analysis of calculated electronic structures reveals the essential role of Ag-O-Ti covalent bonding in enhancing the octahedral deformation.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Inorganic & Nuclear
Yumi Matsuo, Yuko Matsukawa, Masahiro Kitakado, George Hasegawa, Suguru Yoshida, Ryoto Kubonaka, Yuya Yoshida, Tatsushi Kawasaki, Eiichi Kobayashi, Chikako Moriyoshi, Saneyuki Ohno, Koji Fujita, Katsuro Hayashi, Hirofumi Akamatsu
Summary: A novel perovskite fluoride, LixCoF3, with an exceptionally low tolerance factor has been synthesized through low-temperature lithium intercalation. The compound exhibits a high-temperature LiNbO3-type structure and undergoes a paramagnetic-to-antiferromagnetic transition.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Physical
Sourav Kr. Saha, Tomoya Takano, Koji Fushimi, Masatoshi Sakairi, Ryosuke Saito
Summary: The curing behavior of cement paste and formation of passive film on iron were studied using electrochemical techniques and X-ray photoelectron spectroscopy (XPS). The open circuit potential of iron was monitored in cement paste with a pH of -13 for 56 days, and the results showed that the iron was kept in a passive state. The results of electrochemical impedance spectroscopy revealed an increasing trend of film and cement paste resistance with curing time. XPS analysis provided evidence that the formation of ferric hydroxide and ferric oxide was efficient in passivating the iron. The iron surface receded from corrosion due to the high-alkaline environment of cement paste and the formation of a passive film.
SURFACES AND INTERFACES
(2023)
Article
Electrochemistry
K. Fushimi, H. Yanagimoto, S. Nakatsuji, S. Shoji, Y. Kitagawa, Y. Hasegawa, K. Baba
Summary: A liquid-phase ion gun (LPIG) was used to create a local H2S enriched environment near the surface of Cr-containing steel in Na2S solutions, aiming to induce sulfide stress cracking on the specimen surface. Acidification of the local solution below pH 4, creating a pseudo-sour environment, was achieved by anodically polarizing the LPIG Pt microelectrode at a potential of 1.90 V vs SHE in a 1.5 mM Na2S solution. Under this pseudo-sour environment, sulfides were formed on the specimen surface depending on the concentration of Cr, specimen potential, and chloride ion in solution. When subjected to tensile stress and operated with LPIG, cracks were formed on the surface of Cr-containing steels using a four-point bending tester.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
Takayuki Nakanishi, Yuichi Hirai, Jian Xu, Takashi Takeda, Shunsuke Watanabe, Atsuo Yasumori, Shou Hakamada, Yuichi Kitagawa, Yasuchika Hasegawa
Summary: Luminescent lanthanide coordination polymer crystals (LCPCs) are of great interest in materials chemistry due to their unique and customizable functional properties. These crystals offer a high degree of structural tunability, including size- and morphology-dependent properties, making them promising materials for various applications such as light emitting diodes.
SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Yuichi Hirai, Stann Van Baaren, Takahito Ohmura, Takayuki Nakanishi, Takashi Takeda, Yuichi Kitagawa, Yasuchika Hasegawa, Remi Metivier, Clemence Allain
Summary: In pursuit of new mechanically responsive luminescent materials, the study aims to differentiate triboluminescence (TL) from photoluminescence (PL). A beta-diketonate ligand with tert-butyl groups is used to quench Eu-III-centered PL and provide efficient photosensitization of Tb-III ions. Nanomechanical tests reveal the ductility of the crystals, making them ideal for accumulating deformation energy before breakage. Additionally, the study investigates the TL/PL color difference and mechanochromic luminescence (MCL) in a Tb-III/Eu-III heterodinuclear complex.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yuichi Kitagawa, Kaori Shima, Takuma Nakai, Marina Kumagai, Shun Omagari, Pedro Paulo Ferreira da Rosa, Sunao Shoji, Koji Fushimi, Yasuchika Hasegawa
Summary: In this study, a photosensitizer design strategy using a dinuclear luminescent lanthanide complex was demonstrated, which exhibited thermally-assisted photosensitized emission. The complex consisted of Tb(III) ions, six tetramethylheptanedionates, and a phosphine oxide bridge containing a phenanthrene frameworks. The phenanthrene ligand and Tb(III) ions acted as the energy donor and acceptor parts, respectively. The efficient thermally-assisted photosensitized emission of the Tb(III) acceptor resulted in a pure-green colored emission with a high photosensitized emission quantum yield of 73%.
COMMUNICATIONS CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Morito Namba, Hiroshi Takatsu, Riho Mikita, Yao Sijia, Kantaro Murayama, Hao-Bo Li, Ryo Terada, Cedric Tassel, Hiroki Ubukata, Masayuki Ochi, Regino Saez-Puche, Elias Palacios Latasa, Naoki Ishimatsu, Daisuke Shiga, Hiroshi Kumigashira, Katsuki Kinjo, Shunsaku Kitagawa, Kenji Ishida, Takahito Terashima, Koji Fujita, Takeaki Mashiko, Keiichi Yanagisawa, Koji Kimoto, Hiroshi Kageyama
Summary: In this study, an anionic approach was demonstrated to induce intersite charge transfer (ICT) in the oxyhydride perovskite EuVO2H, resulting in increased conductivity and transition temperature (T-C). Furthermore, a large perpendicular magnetic anisotropy was observed in thin films, providing new possibilities for materials with novel functions.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
