Diradicals as Topological Charge Carriers in Metal–Organic Toy Model Pt3(HIB)2 DOI
Maarten G. Goesten, Leslie M. Schoop

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(43), P. 29599 - 29608

Published: Oct. 17, 2024

We explore the eclipsed stacking of a metal–organic Kagome lattice containing heavy-metal nodes. Our model is Pt3(HIB)2, hypothetical but viable member well-known family hexaaminobenzene based frameworks (MOFs). Applying space group theory, it shown how molecular diradicals, brought into play by noninnocent ligand, become topologically nontrivial bands when moving in periodic potential. Three factors are required to enable this: (1) stacking, which shifts Fermi level near symmetry-protected band crossing (2) emergence an electride-like that renders topological Z2 invariant equal 1, thus nontrivial, and (3) Pt-induced spin–orbit coupling, turn bulk gap. The electride band, with its unforeseen role, bears kinship interlayer hexagonal superconductors. It places charge density voids crystal, rather than around atomic nuclei, we name "pore band". While synthesis truly conductive MOFs has proven challenging, analysis shows intrinsically nonlocal physics may emerge from tunable building blocks. With richness redox-active MOF chemistry, this offers pathway tailored electronics.

Language: Английский

Metal–organic frameworks for the separation of xylene isomers DOI
Ming Xu, Wen‐Qi Tang,

Shasha Meng

et al.

Chemical Society Reviews, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Xylene isomers, including

Language: Английский

Citations

0
Untwisting Strategy of MOF Nanosheets in Ultrathin Film Membrane for High Molecular Separation Performance DOI Open Access
Li‐Hao Xu, Qiao Zhang,

Shen‐Hui Li

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 31, 2025

Oriented 2D metal-organic framework (MOF) membranes hold considerable promise for industrial separation processes. Nevertheless, the lattice misalignment caused by twisted stacking of nanosheets reduces in-plane pore size and exerts a significant impact on membrane performance. Precisely regulating pattern oriented MOF remains challenge. Here, scalable scrape-coating technique supplemented vapor untwisting strategy is proposed to directly construct non-twisted ultrathin Zr-BTB (Zr-BTB-M) polyvinylidene fluoride (PVDF) substrates. The are induced undergo reorganization during coating process, resulting in highly overlapped lattices largest channels. exceptional butyl acetate selective adsorption capacity Zr-BTB, combined with its provision ordered vertical penetrating pathways, significantly enhances molecular transport. After facile polydimethylsiloxane (PDMS) coating, pervaporation index PDMS/Zr-BTB-M/PVDF found be 9.74 times higher than that conventional PDMS/PVDF membranes, paving way innovative, high-efficiency, energy-saving technologies.

Language: Английский

Citations

0
Postsynthetic Modification of Metal–Organic Layers DOI
Zhiye Wang,

Lingyun Cao,

Huihui Hu

et al.

Accounts of Chemical Research, Journal Year: 2025, Volume and Issue: unknown

Published: March 6, 2025

ConspectusMetal-organic layers (MOLs), as a subclass of two-dimensional (2D) metal-organic frameworks (MOFs), have gained prominence in materials science by combining the structural versatility MOFs with unique physical and chemical properties 2D materials. MOLs consist metal oxide clusters connected organic ligands, forming periodically extended architectures tunable large surface areas. These characteristics endow significant potential for applications catalysis, sensing, energy storage, biomedicine.The synthesis predominantly follows two key pathways: top-down exfoliation bulk layered bottom-up assembly from molecular building units. The method allows isolation ultrathin MOL sheets precursors, but scalability defects present ongoing challenges. In contrast, offers more precise control over design, enabling formation tailored functionalities morphologies. By carefully selecting linkers synthetic conditions, researchers successfully constructed diverse geometric configurations including linear, triangular, rectangular ligand motifs. Nevertheless, achieving consistent monolayer controlling lateral dimensions remain critical challenges widespread application these materials.A defining advantage is their exceptional amenability to postsynthetic modification (PSM). PSM strategies enable fine-tuning introduction novel without compromising integrity underlying framework. Four principal approaches been established: (1) linker modification, where additional coordination sites facilitate selective metalation or functional group incorporation; (2) secondary unit (SBU) using replaceable perpendicular plane targeted functionalization; (3) dual integrating SBU functionalization achieve complex multifunctional platforms; (4) multilevel assembly, incorporating into larger hierarchical such biomimetic systems composite materials.These versatile unlocked MOLs, single-site photocatalysis, artificial photosynthetic systems. For instance, functionalized transition complexes accessible reactive than conventional faster substrate transport. Additionally, interfaced systems, liposomes proteins, demonstrated promise photochemical conversion oxidation processes.Despite advancements, several obstacles persist. Achieving uniform thickness while preventing multilayer aggregation remains formidable task, necessitating deeper insights thermodynamic kinetic factors governing growth. Furthermore, behavior during drying, adsorption, often deviates classical models, suggesting involvement interfacial phenomena that warrant further investigation. Addressing will be crucial harnessing full next-generation materials.In summary, represent dynamic class offer opportunities innovation across scientific disciplines. advancing methodologies deepening our understanding strategies, can continue expand landscape paving way transformative conversion, beyond.

Language: Английский

Citations

0
IUPAC’s 2024 Top Ten Emerging Technologies in Chemistry DOI
Fernando Gomollón‐Bel

Chemistry International, Journal Year: 2024, Volume and Issue: 46(4), P. 8 - 16

Published: Oct. 1, 2024

Abstract In 2019, the IUPAC started a quest to select most interesting emerging technologies in chemical sciences [1]. Now, this established initiative continues year after year—adding ideas list of innovations with an enormous potential transform fields as diverse materials science, energy, healthcare, agriculture and computing, among others [2]. Overall, “Top Ten Emerging Technologies Chemistry” align United Nations’ Sustainable Development Goals, secure sustainable future pave way circular economy [3]. This new delves into materials, unexplored physical phenomena, creative solutions global challenges, including prevalent diseases still ongoing energy fuel crisis. As first Ten” paper, hover over broad range readiness—from laboratory discoveries commercial realities, hence “emerging.” But all them, carefully curated by panel experts nominated IUPAC, are equally exciting. Read on.

Language: Английский

Citations

1
Diradicals as Topological Charge Carriers in Metal–Organic Toy Model Pt3(HIB)2 DOI
Maarten G. Goesten, Leslie M. Schoop

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(43), P. 29599 - 29608

Published: Oct. 17, 2024

We explore the eclipsed stacking of a metal–organic Kagome lattice containing heavy-metal nodes. Our model is Pt3(HIB)2, hypothetical but viable member well-known family hexaaminobenzene based frameworks (MOFs). Applying space group theory, it shown how molecular diradicals, brought into play by noninnocent ligand, become topologically nontrivial bands when moving in periodic potential. Three factors are required to enable this: (1) stacking, which shifts Fermi level near symmetry-protected band crossing (2) emergence an electride-like that renders topological Z2 invariant equal 1, thus nontrivial, and (3) Pt-induced spin–orbit coupling, turn bulk gap. The electride band, with its unforeseen role, bears kinship interlayer hexagonal superconductors. It places charge density voids crystal, rather than around atomic nuclei, we name "pore band". While synthesis truly conductive MOFs has proven challenging, analysis shows intrinsically nonlocal physics may emerge from tunable building blocks. With richness redox-active MOF chemistry, this offers pathway tailored electronics.

Language: Английский

Citations

0