Layered metal-organic frameworks and metal-organic nanosheets as functional materials

Five Porous Complexes Constructed from a Racemic Ligand: Synthesis, Chiral Self-Assembly, Iodine Adsorption, and Desorption Properties

“…Consequently, the development of an appropriate method to eliminate iodine effectively is still a significant challenge . Metal–organic materials (MOMs) − have been explored as valuable materials used for I 2 adsorption due to their structural diversity, customized functionality, and high porosity. − Among them, the self-assembly of metal complexes has received a lot of research attention over the past few decades due to their potential applications in catalysis, , adsorption, , light-emitting materials, anticancer drugs, , and antibacterial materials. , Bispyridyl compounds are an important class of organic ligands, which can easily coordinate with transition-metal ions due to their versatility and strong coordination ability, resulting in a variety of supramolecular assembly structures. Metal ions with a d 10 electronic configuration have a flexible coordination orientation when they coordinate with organic ligands, which can be easily used to construct functional MOMs based on bispyridyl compounds. − …”

Charge Manipulation in a Series of π-Stacked Pillared-Layer Frameworks by Tuning Electron Donation Ability of Building Blocks

“…For example, band-filling control in electron-conjugated charge transfer materials plays a crucial role in tuning the electronic conductivity. − Moreover, stimuli-driven transitions of electronic states involving electron transfer, as seen in neutral–ionic transition compounds, − can induce a drastic change in the nature of the material before and after the transition . Recent developments in the chemistry of molecular framework systems, such as metal–organic frameworks (MOFs) and coordination polymers (CPs), rekindled interest in the subject of charge manipulation on/through low-dimensional coordinating frameworks, − which not only enabled the development of a variety of conductive MOFs − and high- T c molecule-based magnets − but also opened a new window in the theme of chemo-switchable porous materials, − especially associated with guest-related electron transfer. − Our strategy for constructing charge-manipulatable frameworks is based on the combination of electron-donor (D) and -acceptor (A) units in multidimensional frameworks; we call this type of framework D/A-MOFs. , Notably, we successfully obtained a family of D 2 A-type layered MOFs by employing D and A units of a series of benzoate-bridged paddlewheel diruthenium­(II, II) complexes ([Ru 2 II,II (R x PhCO 2 ) 4 ]; R x PhCO 2 – = R-substituted benzoate) and TCNQ derivatives (TCNQR′ x ; TCNQ = 7,7,8,8-tetracyano- p -quinodimethane), respectively (Scheme a) − ,− and fine-tuned the electronic state of the D 2 A layer either to a neutral state (N; D 0 2 A 0 ), one-electron transfer state (1e-I; D + D 0 A – or averaged D 0.5+ 2 A – ), or two-electron transfer state (2e-I; D + 2 A 2– ) via modulation of the ionization potential ( I D ) of [Ru 2 II,II (R x PhCO 2 ) 4 ] and the electron affinity ( E A ) of TCNQR′ x by changing the respective substituents R and R′ (Scheme b)…”

Single-Crystal Structures of Benzenehexathiol and Its Disulfide Forms

“…Subsequently, it was used as a ligand for aromatic multinuclear complexes as the deprotonated forms of BHT have the ability to coordinate to metal ions. − The concept of multinuclear complexes was extended further, where BHT is used as a ligand for two-dimensional (2D) MOFs. − This type of 2D MOFs features an extended planar π-d conjugation system, which allows them to exhibit attractive properties such as electrical conductivity and catalytic activity. For this reason, various BHT -based 2D MOF analogues have been developed in the past decade, making nanomaterials research flourish. − …”