Metal‐Organic Coordination Polymers Formed from γ‐Cyclodextrin and Divalent Metal Ions

Abstract

The chemistry of metal-organic frameworks based on cyclodextrins and alkali metals has been extensively investigated in recent years, but coordination polymers with non-alkali metals have been rarely reported. Here, we describe the synthesis and X-ray crystallographic characterization of a series of coordination polymers, [Ba(H 2 and [Pb(H 2 O)(γ-CD)](NO 3 ) 2 ·11H 2 O (γ-CD-Pb), which were obtained by reacting γ-cyclodextrin with alkaline earth metal ions and [a] Nikolaev

Conductive MOFs with Photophysical Properties: Applications and Thin-Film Fabrication

“…, obtained from γ-cyclodextrin and Pb 2+ , exhibited photoluminescence with maximum emission wavelength at 345 nm excited at 290 nm [37]. While cyclodextrins are non-aromatic ligands and lack photoluminescence, it was the presence of Pb(II) that induced charge transfer from ligand to metal center through Pb-O bonds under irradiation and hence photolumines-…”

“…It is typically observed in Pb/Zn/Cu-based MOFs, where the metal center binds to O atoms of the organic ligand and charge transfer occurs from ligand to metal through metal–oxygen bonds. For example, [Pb(H 2 O)(γ-CD)](NO 3 ) 2 ·11H 2 O (γ-CD–Pb), obtained from γ-cyclodextrin and Pb 2+ , exhibited photoluminescence with maximum emission wavelength at 345 nm excited at 290 nm [ 37 ]. While cyclodextrins are non-aromatic ligands and lack photoluminescence, it was the presence of Pb(II) that induced charge transfer from ligand to metal center through Pb–O bonds under irradiation and hence photoluminescence.…”

Rational Design of Nonbonded Point Charge Models for Divalent Metal Cations with Lennard-Jones 12-6 Potential

“…Divalent metal cations play remarkable roles in biology − and materials science. − As a useful complement to experiments, computational methods have made important contributions to the interpretation of the underlying mechanism and to the design of metal-ion-containing systems with sophisticated structures and functions. − For reliable computation, physical properties of divalent metal cations (structure, thermodynamics, and kinetics for instance) need to be modeled as accurately as possible. A variety of force field models were developed, such as the bonded model, the nonbonded point charge model, − and the nonbonded dummy atom model, − to reproduce one or several theoretical/experimental properties.…”

Organo-macrocycle-containing hierarchical metal–organic frameworks and cages: design, structures, and applications

“…Therefore, CDs are efficient agents for modifying the surfaces of MOFs to obtain stable dispersion of MOF colloids. 104,105 In addition, surface modified CD-MOFs have excellent CL activity and selectivity. For example, the Fedin group investigated a CD-MOF containing Pb 2+ , which exhibited photoluminescence in the near-ultraviolet light region.…”

“…For example, the Fedin group investigated a CD-MOF containing Pb 2+ , which exhibited photoluminescence in the near-ultraviolet light region. 104 Huang and co-workers reported another example by using CD to modify MIL-235. 106 Due to the interaction between active hydroxyl groups in CD and Fe 3+ , the CL activity of CD-MOF 8 was dramatically increased, which could be used to detect blood glucose concentration (Fig.…”