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

2019 ◽  
Vol 2019 (39-40) ◽  
pp. 4321-4327 ◽  
Author(s):  
Evgeny I. Koshevoy ◽  
Denis G. Samsonenko ◽  
Alexey S. Berezin ◽  
Vladimir P. Fedin
Keyword(s):  
Metal Ions ◽  
Coordination Polymers ◽  
Divalent Metal ◽  
Divalent Metal Ions ◽  
Metal Organic

New coordination polymers. Part 2.—Coordination of poly(vinyl ketone) with divalent metal ions

1992 ◽  
Vol 2 (6) ◽  
pp. 613-615 ◽  
Author(s):  
Refat M. Hassan ◽  
M. A. El-Gahami ◽  
Mohamed A. Abd-Alla
Keyword(s):  
Metal Ions ◽  
Coordination Polymers ◽  
Divalent Metal ◽  
Vinyl Ketone ◽  
Divalent Metal Ions

Fabrication of Thin Metal-Organic Framework MOF Films on Metal-Ion-crosslinked GO-modified Supports

MRS Advances ◽  
2017 ◽  
Vol 2 (46) ◽  
pp. 2497-2504 ◽  
Author(s):  
Julius Choi ◽  
Hyuk Taek Kwon ◽  
Hae-Kwon Jeong
Keyword(s):  
Metal Ions ◽  
Surface Properties ◽  
Metal Ion ◽  
Metal Organic Framework ◽  
Gas Permeation ◽  
Divalent Metal ◽  
Divalent Metal Ions ◽  
Zeolitic Imidazolate Framework ◽  
Metal Organic ◽  
The Stability

ABSTRACTThin films of metal-organic frameworks (MOFs) have shown promising for applications such as gas separation, gas storage, optoelectronics or sensing. However, synthesis of polycrystalline MOF films and membranes depends largely on the surface properties of supports, limiting the availability of common supports. It is, therefore, highly desirable to develop ways to modify the surface properties of common supports for the preferred heterogeneous nucleation of the MOFs. Here, we demonstrated that graphene-oxide (GO) can be exploited to readily modify the surface properties of common supports, thereby leading to well inter-grown polycrystalline MOF films. A prototypical zeolitic-imidazolate framework ZIF-8 was chosen as a model MOF system. The stabilization of GO layers with divalent metal ions was found a key step to synthesize well inter-grown ZIF-8 films. The effect of divalent metal ions on the stability of GO layers and the quality of the resulting ZIF-8 films were systematically investigated. Finally, the single gas permeation behaviors of the ZIF-8 films grown on GO-modified supports were tested.

Interaction of divalent metal ions with the NADP+-malic enzyme from maize leaves

1991 ◽  
Vol 81 (4) ◽  
pp. 462-466 ◽  
Author(s):  
Maria Fabiana Drincovich ◽  
Alberto A. Iglesias ◽  
Carlos S. Andreo
Keyword(s):  
Metal Ions ◽  
Malic Enzyme ◽  
Divalent Metal ◽  
Divalent Metal Ions ◽  
Maize Leaves

Metal-organic Nanopharmaceuticals

2020 ◽  
Vol 8 (3) ◽  
pp. 163-190
Author(s):  
Benjamin Steinborn ◽  
Ulrich Lächelt
Keyword(s):  
Metal Ions ◽  
Coordination Polymers ◽  
Active Agent ◽  
Lewis Base ◽  
High Loading ◽  
Active Components ◽  
Base Functions ◽  
Metal Organic ◽  
Theranostic Applications ◽  
Pharmacologically Active

: Coordinative interactions between multivalent metal ions and drug derivatives with Lewis base functions give rise to nanoscale coordination polymers (NCPs) as delivery systems. As the pharmacologically active agent constitutes a main building block of the nanomaterial, the resulting drug loadings are typically very high. By additionally selecting metal ions with favorable pharmacological or physicochemical properties, the obtained NCPs are predominantly composed of active components which serve individual purposes, such as pharmacotherapy, photosensitization, multimodal imaging, chemodynamic therapy or radiosensitization. By this approach, the assembly of drug molecules into NCPs modulates pharmacokinetics, combines pharmacological drug action with specific characteristics of metal components and provides a strategy to generate tailorable multifunctional nanoparticles. This article reviews different applications and recent examples of such highly functional nanopharmaceuticals with a high ‘material economy’. : Lay Summary: Nanoparticles, that are small enough to circulate in the bloodstream and can carry cargo molecules, such as drugs, imaging or contrast agents, are attractive materials for pharmaceutical applications. A high loading capacity is a generally aspired parameter of nanopharmaceuticals to minimize patient exposure to unnecessary nanomaterial. Pharmaceutical agents containing Lewis base functions in their molecular structure can directly be assembled into metal-organic nanopharmaceuticals by coordinative interaction with metal ions. Such coordination polymers generally feature extraordinarily high loading capacities and the flexibility to encapsulate different agents for a simultaneous delivery in combination therapy or ‘theranostic’ applications.

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