Dalton Transactions

doi: 10.1039/D2DT90103Jpmid: N/A

doi: 10.1039/D2DT90104Hpmid: N/A

Liu, Zizhen; Yamada, Shota; Otsuka, Yuichi; Peaflor Galindo, Tania Guadalupe; Tagaya, Motohiro

doi: 10.1039/d2dt00969bpmid: 35699123

Autogenous bone and metallic implant grafting has been used to repair and regenerate bone defects. However, there are still many unresolved problems. It is suggested that bioceramic nanoparticles should be developed and designed to promote effective bone regeneration. In addition, it is necessary to synthesize bioceramic nanoparticles that can support proteins related to bone repair and regeneration such as collagen and albumin. As the protein-interactive bioceramic, hydroxyapatite (HA) deserves to be mentioned and has several attractive properties that are useful in biomedical fields (e.g., biocompatibility, protein adsorption capacity and stability in the physiological environment). In order to prepare novel HA nanoparticles with high biocompatibility, it can be considered that human bones are mainly composed of HA and contain a small amount of silicate, and therefore, the design of coexistence of HA with silicate can be focused. Moreover, it is proposed that the state of the hydration layer on the nanoparticle surfaces can be controlled by introducing heteroelements and polymer chains, which have a great influence on the subsequent protein adsorption and cell adhesion. In this perspective, in order to develop novel bioceramic nanoparticles for the treatment of bone defect, the design of highly biocompatible HA nanoparticles and the control of the hydration layer and protein adsorption states on the surfaces were systematically discussed based on their surface modification techniques, which are very important for the proper understanding of the interface between cells and bioceramics, leading to the further application in biomedical fields.

Du, Jiakai; Li, Qingmeng; Chai, Jiali; Jiang, Lei; Zhang, Qianqian; Han, Ning; Zhang, Wei; Tang, Bohejin

doi: 10.1039/d2dt01415gpmid: 35697342

Lithium-ion batteries with a stable circulation capacity, high energy density and good safety are widely used in automobiles, mobile phones, manufacturing and other fields. MOs due to their large theoretical capacity, simple processing and abundant reserves, and used as anode materials for LIBs, have attracted much attention. Three electrochemical mechanisms of MOs are reviewed in this paper. In addition, research progress of MOs and prospects for their further applications in LIBs are summarized.

Csucker, Joshua; Jo, Da Kyung; Nadeem, Qaisar; Blacque, Olivier; Fox, Thomas; Braband, Henrik; Alberto, Roger

doi: 10.1039/d2dt00743fpmid: 35695306

This work presents a straightforward method for the preparation of an isoindoline bridged [M(arene)2]+ (M = Re, 99mTc) ansa-[3]arenophane. This intramolecular formation of an ansa-complex is accompanied by the intermolecular formation of a pair of isoindoline bridged macrocyclic dinuclear sandwich complexes, one of which exhibits axial chirality.

Xu, Luonan; Xie, Zixi; Zenere, Katrina A.; Clegg, Jack K.; Kenny, Elise; Rijs, Nicole J.; Jameson, Guy N. L.; Kepert, Cameron J.; Powell, Benjamin J.; Neville, Suzanne M.

doi: 10.1039/d2dt01371apmid: 35670370

Inclusion of an angular bridging ligand, 4,2:6,4-terpyridine (TPy), into a Hofmann-type framework produces an irregular network in which six- and five-coordinate FeII species co-exist. The octahedral sites show thermally-induced spin-crossover (SCO) and the rare five-coordinate FeII sites are high-spin.

Tabata, Tomomi; Nagai, Anna; Matsuda, Motohide

doi: 10.1039/d2dt01374fpmid: 35686949

The magnetic orientation of L-type zeolite ion-exchanged with various rare-earth elements was observed under a low magnetic field of 0.9 T. The orientation along the applied magnetic field was classified into three types: c-axis orientation for Ce3+, Pr3+, Nd3+, Tb3+, Dy3+ and Ho3+, ab-plane orientation for Er3+, Tm3+ and Yb3+, and random orientation for Eu3+ and Gd3+. The different orientation behavior was considered to originate from the electronic structures of the rare-earth ions introduced into the zeolite structure.

Liu, Ningchao; Lv, Xiaojuan; Xiao, Bentian; Kuzuhara, Daiki; Mei, Peifeng; Aratani, Naoki; Yamada, Hiroko; Qiu, Fengxian; Pan, Jianming; Xue, Songlin

doi: 10.1039/d2dt01289hpmid: 35687010

Mono-/diboron complexes with saddle-shaped molecular conformations were synthesized from porphyrins(2.1.2.1). The boron complexes have unique structure-dependent photophysical properties: (a) monoboron complexes 2a and 2b are not emissive in solution and the solid state, (b) diboron complex 3a shows red emission in toluene, and (c) diboron complex 3b shows aggregation-induced emission (AIE) in the deep-red region due to intermolecular secondary interactions (F). This is the first case of a boron porphyrinoid complex that shows AIE emission in the deep-red region in decades.

Riffel, Madeline N.; Siegel, Lukas; Oliver, Allen G.; Tsui, Emily Y.

doi: 10.1039/d2dt01339hpmid: 35695261

ZnII and FeII chloride complexes of a di(methylthiazolidinyl)pyridine ligand were deprotonated to form the corresponding thiolate complexes supported by redox-active iminopyridine moieties. The thiolate donor groups are nucleophilic and reactive toward oxidants, electrophiles, and protons, while the pendant thiazolidine rings are available for hydrogen bonding. Anion exchange with the weakly-coordinating triflate anion resulted in self-assembly of the iminopyridine complexes to form a trimeric [M3S3] cluster. Hydrogen bonding closely associates anions with this trimetallic core.

Li, Cheng; Jiang, Heng-Yu; Wang, Ji-Lei; Kang, Run-Kun; Mei, Hua; Xu, Yan

doi: 10.1039/d2dt01276fpmid: 35695846

An isolated doughnut-like molybdenum(v) cobalto-phosphate cluster with the formula (C11NH10)2{[Co(H2O)6]@[H29Co16Mo16(H2O)16(PO4)24O36]}(H2PO4)25H2O has been successfully synthesized by a hydrothermal method. Single crystal X ray diffraction analysis shows that four {Co4O60} tetramers and eight {Mo2O10} dimers are linked by oxygen atoms and phosphate groups to construct a doughnut-type structure for [Co@{Co16Mo16}], in which one [CoII(H2O)6]2+ octahedron is enclosed. More importantly, [Co@{Co16Mo16}] exhibits promising photocatalytic performance for CO2 reduction with the CO formation rate of 6764.3 mol g1 h1 and the selectivity of 96.89%. In addition, the cycling test indicated that [Co@{Co16Mo16}] can be reused for at least four cycles without significant loss of catalytic activity. The result of this work may provide new insight for the synthesis of highly efficient POM-based photocatalysts for CO2 reduction.