Article
Chemistry, Multidisciplinary
Kentaro Yonesato, Seiji Yamazoe, Daisuke Yokogawa, Kazuya Yamaguchi, Kosuke Suzuki
Summary: This study demonstrates that a molecular hybrid of an atomically precise {Ag-27}(17+) nanocluster and polyoxometalates (POMs) efficiently cleaves H-2 into protons and electrons. The Ag nanocluster accommodates electrons through the redox reaction, while the POM ligands play crucial roles in stabilizing the nanocluster, forming an interface for efficient H-2 cleavage, and storing the generated protons.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Clement Falaise, Soumaya Khlifi, Pierre Bauduin, Philipp Schmid, William Shepard, Anton A. Ivanov, Maxim N. Sokolov, Michael A. Shestopalov, Pavel A. Abramov, Stephane Cordier, Jerome Marrot, Mohamed Haouas, Emmanuel Cadot
Summary: In this study, the chaotropic effect of reduced molybdate ions in acidified aqueous solution was shown to significantly amplify weak supramolecular interactions, leading to the formation of large aggregates of molybdenum-blue oligomeric species and gamma-cyclodextrin. Time-resolved Small Angle X-ray Scattering (SAXS) analysis revealed the rapid formation of nanoscopic {Mo-154}-based host-guest species, while X-ray diffraction analysis showed the formation of an unprecedented three-component well-ordered core-shell-like motif. This work provides insights into self-assembly processes and offers new opportunities for designing complex multicomponent materials through non-covalent chemistry simplicity.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Aleksandra Sarwa, Agata Bialonska, Mateusz Garbicz, Bartosz Szyszko
Summary: Depending on the size and basicity of the anion, the self-assembly of 2,5-diformylpyrrole, tris(2-aminoethyl)amine, and silver(I) resulted in new cascade complexes or plenates, which are cryptates incorporating Ag-n(n+) clusters. The nature of the product was determined by the counterion and its formation was driven by either cascade anion binding or argentophilic interactions stabilizing the cluster within the cavity. The reaction of plenates with tetrabutylammonium halides led to the protonation-coupled replacement of the Ag-3(3+) with anion(s), forming cascade cryptates.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Han Wu, Xin He, Biao Yang, Cui-Cui Li, Liang Zhao
Summary: The study involved constructing spirocyclic Ag-9 clusters by vertex-sharing of in-situ-generated heteroaryl diide-centered metal rings, demonstrating versatile photoluminescent and chiroptical behavior. Under different aggregation conditions, assembly led to cluster-based phosphorous luminescence and micrometer-long helical nanofibers. Exciton couplings of chelating ligands at molecular and microscopic levels in the assembled film of cluster enantiomers resulted in circularly polarized luminescence with a high anisotropy factor (0.16).
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Anssi Peuronen, Anni I. I. Taponen, Elina Kalenius, Ari Lehtonen, Manu Lahtinen
Summary: In this study, a coordination cage assembled from Cu3I4- clusters and tripodal cationic N-donor ligands was synthesized and its structure was determined. The cage selectively binds iodide anions in specific regions through ionic interactions, which enables the selective binding of bromomethanes as secondary guest species. This selective binding was confirmed by single-crystal X-ray diffraction.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Lubin Ni, Jie Gu, Xinyuan Jiang, Hongjie Xu, Zhen Wu, Yuchao Wu, Yi Liu, Ju Xie, Yongge Wei, Guowang Diao
Summary: A POM-CD-COSF crystalline structure was successfully obtained by self-assembling a Krebs-type POM, β-CD units, and two K4SiW12O40-type POMs. The POM-CD-COSF-based battery separator showed excellent performance in mitigating the polysulfide shuttle effect in lithium-sulfur batteries. This was attributed to the fast Li+ diffusion through the supramolecular channel of β-CD, efficient polysulfide-capture ability by the dynamic host-guest interaction of β-CD, and improved sulfur redox kinetics by the bidirectional catalysis of the POM cluster. This research opens up new possibilities for the development of multifunctional supramolecular POM frameworks and their applications in Li-S batteries.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Yunping Wu, Sheng Chen, Caihe Bai, Shuwen Niu, Wei Wei
Summary: The use of polyoxometalate clusters (POMs) has led to the development of cluster-assembled materials with various applications. However, controlling the interactions and organization of large POMs to achieve multi-level superlattices remains a challenge. This study presents a universal approach to modulate the coordination behavior and configurations of POM units, resulting in a class of cluster superlattice architectures. These superlattices, when sulfured, show enhanced power and cycling life as sodium-ion battery anodes.
Article
Chemistry, Multidisciplinary
Naoya Haraguchi, Naoki Ogiwara, Yoshitaka Kumabe, Soichi Kikkawa, Seiji Yamazoe, Takashi Tachikawa, Sayaka Uchida
Summary: Size-controlled Ag clusters with specific colors were synthesized using porous ionic crystals (PICs) as scaffolds and redox-active polyoxometalates (POMs) as electron sources. The cluster size and color emission were controlled by the reduction time and types of ions or elements in the PICs. This method provides a convenient way to obtain ligand-free Ag clusters with high yields and stability.
Review
Chemistry, Multidisciplinary
Jia-Fu Yin, Lucia Amidani, Jiadong Chen, Mu Li, Binghui Xue, Yuyan Lai, Kristina Kvashnina, May Nyman, Panchao Yin
Summary: This Review discusses the use of X-ray, neutron scattering and X-ray absorption to characterize the assembly and function of inorganic nanostructured materials in solution. The review covers various size regimes and techniques including SAXS/WAXS/SANS, PDF, and XANES/EXAFS. The goal is to provide information and inspiration for the inorganic/materials science communities in understanding the role of solution speciation in natural and synthetic processes.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Arijit Jana, Madhuri Jash, Ajay Kumar Poonia, Ganesan Paramasivam, Md Rabiul Islam, Papri Chakraborty, Sudhadevi Antharjanam, Jan Machacek, Sundargopal Ghosh, Kumaran Nair Valsala Devi Adarsh, Tomas Base, Thalappil Pradeep
Summary: A silver nanocluster Ag-42 protected with both carboranes and triphenylphosphine has been successfully synthesized, which exhibits unique physicochemical properties. The study also reveals a light-activated transformation of Ag-42 to Ag-14 through a series of intermediate cluster formations.
Article
Biochemistry & Molecular Biology
Christopher J. Kingsbury, Marc Kielmann, Brendan Twamley, Mathias O. Senge
Summary: Coordinating the spatial arrangement of electroactive partners is crucial in designing molecular electronics and photonics. This study demonstrates a viable method of organizing electroactive centers into filaments and monolayers by manipulating nonplanar porphyrins through self-organization and charge-balance principles. The results provide insights into the interactions and induced conformations of porphyrin acids and nonstandard counterions, facilitating the development of surface deposition and ultrathin devices.
Review
Chemistry, Inorganic & Nuclear
Yusuke Sunada, Kazuya Yamaguchi, Kosuke Suzuki
Summary: Discrete transition-metal clusters with metal-metal or metal-oxygen-metal bonds are a new category of functional materials with unique properties. The synthesis of these clusters using template molecules allows for better control over the structural parameters, leading to more specific and superior catalytic activity.
COORDINATION CHEMISTRY REVIEWS
(2022)
Article
Chemistry, Multidisciplinary
Chinatsu Murata, Akari Nakashuku, Yukatsu Shichibu, Katsuaki Konishi
Summary: Perfluorination brings about unique properties in materials science and chemistry. This study demonstrates that the construction of F-rich inner space within a hollowed molecule leads to unique guest binding activities. The collective effects of multiple C-F bonds are responsible for the facile guest encapsulation.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Hong Zeng, Peiren Liu, Hao Xing, Feihe Huang
Summary: Due to the highly symmetrical structures, partial functionalization of macrocycles is usually low-yielding and difficult to purify. In this study, a two-step fragment coupling method was developed to synthesize tetra-functionalized pillar[6]arenes, referred to as X-pillar[6]arenes. This method is simple and versatile and allows for hetero-fragment coupling and pre-functionalization.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Inorganic & Nuclear
Masanori Wakizaka, Wang-Jae Chun, Takane Imaoka, Kimihisa Yamamoto
Summary: This study investigated the size-selective synthesis of tungsten oxide clusters on graphitic carbon using a phenyl-azomethine-type dendrimer as a template, revealing multiple oxidation states of W atoms in the clusters. The proposed mechanism for cluster formation on the carbon surface involves auto-oxidation with adventitious oxygen after hydrogen reduction.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2021)
