Article
Chemistry, Organic
Hui Li, Ying Yang, Fenfen Xu, Zhaozhao Duan, Riqiang Li, Herui Wen, Wei Tian
Summary: By designing and synthesizing four monomers, a sequence-controlled supramolecular copolymer was successfully self-assembled. The resulting SCP exhibited K+ responsiveness and regulatable fluorescence properties, making it potential for creating smart adaptive materials such as honeycomb-patterned films.
ORGANIC CHEMISTRY FRONTIERS
(2021)
Article
Chemistry, Inorganic & Nuclear
Guotao Wang, Qixia Bai, Hui Liu, Zhengguang Li, Zhiyuan Jiang, Zhe Zhang, Yiming Li, Pingshan Wang
Summary: We achieved the adjustable self-assembly of metallosupramolecular cages by utilizing the steric hindrance effect, which allows for the precise control of their shape and size.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Adrian Saura-Sanmartin, Alberto Martinez-Cuezva, Marta Marin-Luna, Delia Bautista, Jose Berna
Summary: A flexible benzylic amide macrocycle with two carboxylic acid groups was used as the organic ligand to prepare robust copper(II)- and zinc(II)-based metal-organic frameworks in this study. These frameworks crystallized in the C2/m space group, forming non-interpenetrated channels with a large solvent-accessible volume. The absence of threads in these novel materials led to improvements in dimensionality, pore size, and dynamic guest adaptability. The materials showed high efficiency in encapsulating fullerene C60 and selective recognition of different fullerenes, particularly in mixtures of C60 and C70.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Organic
Yan-Yan Xu, Hong-Kun Liu, Ze-Kun Wang, Bo Song, Dan-Wei Zhang, Hui Wang, Zhiming Li, Xiaopeng Li, Zhan-Ting Li
Summary: The study found that two organic cages were prepared in situ in water through the 2 + 3 hydrazone coupling of two pyridinium-derived trialdehydes and oxalohydrazide. These cages can promote two- or three-component hydrazone condensation reactions, increasing the yields of the resulting products.
JOURNAL OF ORGANIC CHEMISTRY
(2021)
Review
Chemistry, Multidisciplinary
Qingqing Fang, Yan Xu, Xiaosheng Yan, Tao Jiang, Yunbao Jiang
Summary: Metal-coordination-directed macrocyclic complexes have potential applications in biosensing and therapeutics, but current synthetic methods face challenges in controlling the formation of uncontrolled multicyclic cages and linear oligomers/polymers. This mini-review outlines state-of-art synthetic approaches using foldable ligands or amphiphilic ligands to achieve predictable and controllable structures of metal-coordination-directed macrocyclic complexes.
FRONTIERS IN CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Guo-Ling Li, Zhu Zhuo, Bin Wang, Xue-Li Cao, Hai-Feng Su, Wei Wang, You-Gui Huang, Maochun Hong
Summary: This study presents a series of Jr-stacked cages based on hierarchical self-assemblies with pi-stacking interactions, showcasing their versatility in incorporating various species through different hydrogen-bonding modes. The cages are able to stabilize reactive species and encapsulate molecules within their voids, contributing to the construction of diverse hierarchical superstructures. This research provides insights into the chemistry and assembly of supramolecular cages based on pi-pi stacking interactions.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Review
Chemistry, Inorganic & Nuclear
Tomoki Tateishi, Masahiko Yoshimura, Shun Tokuda, Fuyuki Matsuda, Daishi Fujita, Shuhei Furukawa
Summary: Cage-like molecules formed by the coordination of metal ions and organic links have unique chemical properties and design flexibility, and are pushing the boundaries of science. This review article compares coordination cages (CCs) and metal-organic cages (MOCs) from two distinct chemistry communities, highlighting their similarities and differences. The article provides insights into synthetic conditions and identifies new research directions in the field.
COORDINATION CHEMISTRY REVIEWS
(2022)
Article
Chemistry, Multidisciplinary
Christophe Lachance-Brais, Christopher D. Hennecker, Asem Alenaizan, Xin Luo, Violeta Toader, Monica Taing, C. David Sherrill, Anthony K. Mittermaier, Hanadi F. Sleiman
Summary: Nucleobase mimicking small molecules have been discovered as a strategy to reconfigure DNA, promising to extend the structural and functional diversity of nucleic acids. In this work, the addition of substituted cyanuric acid molecules successfully programmed polyadenine strands to assemble into supramolecular fibers, coating DNA triple helices with alkylamine or alcohol units. The study showed that small changes in the small molecule functional group can lead to large structural and energetic variations in the overall assembly, allowing for the controlled formation of hierarchical, hybrid DNA assemblies through the addition and variation of small, functionalized molecules.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Multidisciplinary
Yuki Oka, Hiroshi Masai, Jun Terao
Summary: In this study, a ligand-controlled switching method for multistate switching of catenanes controlled by complexation with added amine ligands was reported. A [3]catenane with rigid pi-system comprised of cyclic porphyrin dimers was synthesized to verify this method. The relative positions among the cyclic components of the [3]catenane could be precisely controlled by complexation with various amine ligands. Furthermore, ligand-controlled multistate switching affected the optical properties of the [3]catenanes, with emission intensity being tuned by modulating the sizes and coordination numbers of integrated amine ligands. This work demonstrates the utility of using organic ligands for structural switching of catenanes and contributes to the development of multistate switchable mechanically interlocked molecules.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Michael A. Jinks, Mark Howard, Federica Rizzi, Stephen M. Goldup, Andrew D. Burnett, Andrew J. Wilson
Summary: In this study, a rapid NMR experiment for direct detection of hydrogen bonds in solution was introduced. This method provides a straightforward way to determine hydrogen bonding in multicomponent mixtures, enabling the establishment of tautomeric configuration, conformation, and resolution of self-sorted speciation.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Qi-Cheng Huang, Mao Quan, Huan Yao, Liu-Pan Yang, Wei Jiang
Summary: The study found that three structurally flexible cages exhibit high binding affinities and selectivities to different guests, with enthalpy-entropy compensation used to explain the variations in binding performance. Furthermore, a six-component, high-fidelity self-sorting system was successfully constructed using these cages and three guests, highlighting the potential of conformationally flexible hosts to achieve high binding affinities and selectivities.
CHINESE JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Physical
Chi-Huao Huang, Damien Jardel, Guillaume Lautrette, Isabelle Pianet, Alexander Kuhn, Dario M. Bassani
Summary: A series of receptors with H-bonding sites complementary to barbituric acid are used to induce the assembly of ladder-like structures containing triphenylenevinylene units appended with barbituric acid. Through-space interactions between electroactive moieties in the assemblies are enforced by the topological constraints of the architectures, leading to the formation of radical cation species with delocalized charges.
Article
Chemistry, Multidisciplinary
Shafieq Ahmad Wagay, Rashid Ali
Summary: Two novel fluorescein and benzo-12-crown-4 ether functionalized dipyrromethane receptors (DPM3 and DPM4) have been successfully synthesized and their binding properties and stoichiometry with anions have been studied using UV-visible spectrophotometric titrations. The results demonstrate their high selectivity and affinity in recognizing and binding different anions.
Article
Chemistry, Multidisciplinary
Thomas A. Sobiech, Yulong Zhong, Daniel P. Miller, Jillian K. McGrath, Christina T. Scalzo, Morgan C. Redington, Eva Zurek, Bing Gong
Summary: The article presents experimental results on the binding of a rigid aromatic oligoamide macrocycle with DABCO-based cationic guests in highly polar DMF, demonstrating strong positive cooperativity. The unusually strong positive cooperativity mechanism is verified through various experimental methods. This host-guest system provides a tunable platform for studying molecular interactions and constructing stable supramolecular assemblies due to its exceptional positive cooperativity.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Yan-Fang Wang, Huan Yao, Liu-Pan Yang, Mao Quan, Wei Jiang
Summary: This research reports a new class of macrocyclic hosts with well-defined cavities, which were synthesized through specific chemical reactions. The molecular recognition and chiral sensing properties of these hosts were studied.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Takashi Nakamura, Sota Yonemura, Shunya Akatsuka, Tatsuya Nabeshima
Summary: The study has successfully synthesized single isomeric complexes with dissymmetric structures by utilizing the mismatch in coordination valences between macrocyclic homooligomers and metal ions.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Daisuke Saito, Tomasz Galica, Eiji Nishibori, Masaki Yoshida, Atsushi Kobayashi, Masako Kato
Summary: A study on the vapochromic single-crystal-to-single-crystal transformation of a highly luminescent Pt-II complex was reported, revealing the reversible process by the release and reabsorption of water molecules changing the stacked structure of the complex. Additionally, the Pt-II complex showed a similar response to methanol vapor but was inactive towards ethanol vapor.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Physical
Rumpa Pal, Dylan Jayatilaka, Eiji Nishibori
Summary: This study investigates the static structure factors and charge density of metallic aluminum through periodic calculations and comparisons with experimental data. The results reveal the importance of high-resolution structure factors in determining the detailed bonding description of metallic aluminum.
JOURNAL OF PHYSICAL CHEMISTRY A
(2022)
Article
Physics, Multidisciplinary
Ichiro Inoue, Victor Tkachenko, Konrad J. Kapcia, Vladimir Lipp, Beata Ziaja, Yuichi Inubushi, Toru Hara, Makina Yabashi, Eiji Nishibori
Summary: By using an x-ray pump x-ray probe technique, the transient structural changes of Al2O3 on subatomic length scales following irradiation with an intense x-ray laser pulse have been investigated. The results show that electron excitation and relaxation modify the potential energy surface and drive directional atomic displacements. This implies that high-resolution x-ray structural analysis is feasible even with intense x-ray pulses.
PHYSICAL REVIEW LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Yoshio Yano, Hidetaka Kasai, Yanyan Zheng, Eiji Nishibori, Yoshio Hisaeda, Toshikazu Ono
Summary: Mechanochemical synthesis was used to achieve multimolecular self-assembly in challenging three-component systems. The resulting crystals exhibited multicolor solid-state luminescence under UV light, which depended on the components. Optical and X-ray diffraction studies were conducted to investigate the self-assembling behavior. In situ X-ray diffraction using synchrotron radiation allowed for direct observation of the milling process, which initiated the self-assembly within 1 minute. This research highlights the importance of multicomponent molecules with optical functions and self-assembling behavior, and offers the potential for developing more complex multicomponent crystals and organic solid solutions for advanced materials.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Yusuke Chiba, Zhehui Jin, Takashi Nakamura, Tatsuya Nabeshima
Summary: The research revealed that the isomerization behavior of an iron(II) complex is influenced by anions, where different anions promote the formation of different isomers. This phenomenon is likely caused by the differences in hydrogen bond modes between the isomers and the anions.
Article
Chemistry, Inorganic & Nuclear
Sofie Stampe Leiszner, Khetpakorn Chakarawet, Jeffrey R. Long, Eiji Nishibori, Kunihisa Sugimoto, James A. Platts, Jacob Overgaard
Summary: We conducted an experimental and theoretical study on the metal-metal bonding in the tetranuclear cluster Ni-4((NPBu3)-Bu-t)(4). The results show that the bonding in Ni-4((NPBu3)-Bu-t)(4) is an eight-membered ring structure without direct Ni-Ni bonding. However, calculations reveal the presence of direct Ni-Ni bonding between neighboring Ni atoms. These metal-metal bonding interactions likely contribute to the direct ferromagnetic exchange and the high-spin ground state of the molecule.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Jiawei Zhang, Daisuke Ishikawa, Michael M. Koza, Eiji Nishibori, Lirong Song, Alfred Q. R. Baron, Bo B. Iversen
Summary: We have revealed the correlation between loosely bonded atoms and strong anharmonicity in thermoelectric material InTe, using chemical bonding analysis, inelastic X-ray and neutron scattering, and first principles phonon calculations. Our findings indicate that highly anharmonic phonons in InTe arise from the covalency between delocalized In1+ 5s(2) lone pair electrons and Te 5p states. This work provides insights into the microscopic origin of strong anharmonicity in rattling atoms and has implications for designing efficient thermoelectric materials.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Instruments & Instrumentation
Hidetaka Kasai, Jianqiao Liu, Chao-Nan Xu, Eiji Nishibori
Summary: Equipment for synchrotron X-ray diffraction at high pressures has been developed, enabling observation of structural changes in mechanoresponsive materials. The validity of the equipment was demonstrated through observation of the pressure dependence of lattice parameters in copper and subsequent application to mechanoluminescence material Li0.12Na0.88NbO3: Pr3+. The advancement of high-pressure X-ray diffraction is crucial in understanding and designing mechanoresponsive materials at the atomic scale.
JOURNAL OF SYNCHROTRON RADIATION
(2023)
Article
Multidisciplinary Sciences
Chengyan Liu, Zhongwei Zhang, Ying Peng, Fucong Li, Lei Miao, Eiji Nishibori, Raju Chetty, Xiaobo Bai, Ruifan Si, Jie Gao, Xiaoyang Wang, Yanqiu Zhu, Nannan Wang, Haiqiao Wei, Takao Mori
Summary: By manipulating the bonding in lead-free GeTe through charge transfer engineering, we have achieved outstanding thermoelectric and mechanical properties. The unique chemical bonding mechanism and nanostructure have led to a significant increase in average zT values, reaching a record value of approximately 1.73 and an ultrahigh maximum zT of around 2.7 in the temperature range of 323 to 773 K. Additionally, the charge transfer engineering process and formation of microstructures have greatly improved Vickers microhardness numbers and eliminated thermal expansion fluctuation at the phase transition.
Article
Chemistry, Inorganic & Nuclear
Takashi Nakamura, Satoru Watanabe
Summary: A hexanuclear palladium complex can have two different conformations, Alternate and Twisted, depending on the guests. Linear ditopic α,ω-diamines can be captured in three distinct cross-linking modes, and the length of the diamines can regulate the macrocyclic conformations. Heteroleptic site-selective bridging of two different diamines has also been achieved.
INORGANIC CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Yanyan Zheng, Hidetaka Kasai, Shintaro Kobayashi, Shogo Kawaguchi, Eiji Nishibori
Summary: We investigated in situ the mechanical reduction of silver chloride with aluminum using synchrotron X-ray diffraction with thermography at SPring-8 BL02B2. A mechanically induced self-sustaining reaction (MSR) was observed for 2 minutes following an activation period of 9 minutes under the present milling conditions. The growth kinetics induced by the MSR continued for 6 minutes. The in situ monitoring clearly distinguished the reaction and crystal growth in the synthesis.
MATERIALS ADVANCES
(2023)
Article
Chemistry, Inorganic & Nuclear
Kenichiro Omoto, Shota Aoyama, Tomasz Galica, Eiji Nishibori, Shohei Katao, Kazuma Yasuhara, Gwenael Rapenne
Summary: The novel coordination polymer ZnC16 shows a thermal crystal-to-crystal phase transition behavior dominated by disordering/ordering of alkyl chains, resulting in the expansion and shrinkage of distances within the rigid 2D coordination networks. The thermal phase transition induces significant changes in crystal morphology, including reversible macroscopic elongation/shrinkage and irreversible delamination and polycrystal slippage. This research provides a new direction to modulate the dynamic behavior and properties of layered coordination polymers by utilizing the thermally responsive character of flexible alkyl chains.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Inorganic & Nuclear
Taeko Aizawa, Shigehisa Akine, Toshiyuki Saiki, Takashi Nakamura, Tatsuya Nabeshima
Summary: This study reports a novel pseudomacrocyclic anion receptor that can spontaneously form rotaxane structures in the presence of a specific axle. It exhibits strong anion binding ability and is thermodynamically stable, making it a promising candidate for various applications.
DALTON TRANSACTIONS
(2022)
