Coordination polymers of zinc(II) and manganese(II) made by complexation of calix[4]arene functionalized with carboxylates afford alveolar materials

CO2 Capture on Functionalized Calixarenes: A Computational Study

“…Hydroxyl ( 4 ), thiol ( 5 ), amino ( 7 ), and pyridyl ( 8 ) groups were included for their likelyhood to increase electrostatic and hydrogen bonding interactions. Methyl ( 6 ) and tert -butyl ( 11 ) groups were included due to their prevalence in previous calixarene studies. ,,,,,− 2-Methoxypyridyl ( 9 ), methyoxyphenyl ( 10 ), methoxyamine ( 12 ), and ethoxyamine ( 13 ) were considered based on two assumptions: first, amines and N-containing heterocycles have shown to be effective in CO 2 gas separations , and second, the short spacer (oxygen atom) between amine/pyridine and calixarene can further induce a dipole moment on CO 2 molecules. Thus, we hypothesize that the addition of these four groups on the calixarene scaffold can increase the CO 2 -philicity of the organic molecules more than structures 1 – 8 and 11 .…”

“…Other modifications include hydrocarbon bridging units connected at opposing para positions, transition metal complexation with the phenolic groups, , conversion of the phenolic groups to ethers, − and replacement of the methylene linkers for ether or amine linkers. Calix[4]­arenes have also been successfully introduced in MOFs, COFs, and PMs. ,− …”

Photoreactive Mercury-Containing Metallosupramolecular Nanoparticles with Tailorable Properties That Promote Enhanced Cellular Uptake for Effective Cancer Chemotherapy

“…The development of metallosupramolecular coordination polymers (MSCPs) is among one of the most attractive research areas in coordination chemistry due to their unexpected captivating architectural features and topological properties. − MSCPs are composed of organic polymer units and metal linkers and can further hierarchically self-assemble into various nanostructures in solution and the solid-state through noncovalent secondary interactions such as hydrogen bonds, π–π stacking, electrostatic forces, or hydrophobic interactions. − Numerous factors affect the structures and physical properties of MSCPs formed via the bottom-up self-assembly process, including the type of metal ion, metal–ligand interactions, and external environmental parameters (temperature, pH, time period, etc. ). , In general, the mechanical properties of MSCPs confer high stability and reversibility and the binding constants between the metal ions and polymeric ligand can be systematically controlled by tuning the ratios and directional properties of the coordinate geometry. − Owing to their unique structural and physical features, MSCPs have provided an efficient route to obtain functional metal–organic materials that can potentially be used in a broad range of biomedical applications, including bioimaging, biosensors, targeted drug delivery, and biological devices. − For instance, Zhang and co-workers reported the development of toxic platinum ligand complexes in metallacycle-cross-linked supramolecular networks via metal-coordination interactions. These complexes were used as an effective multifunctional bioagent for antibacterial activity and bacterial imaging.…”

“…5−8 Numerous factors affect the structures and physical properties of MSCPs formed via the bottom-up selfassembly process, including the type of metal ion, metal− ligand interactions, and external environmental parameters (temperature, pH, time period, etc.). 9,10 In general, the mechanical properties of MSCPs confer high stability and reversibility and the binding constants between the metal ions and polymeric ligand can be systematically controlled by tuning the ratios and directional properties of the coordinate geometry. 11−13 Owing to their unique structural and physical features, MSCPs have provided an efficient route to obtain functional metal−organic materials that can potentially be used in a broad range of biomedical applications, including bioimaging, biosensors, targeted drug delivery, and biological devices.…”