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Related Concept Videos

Alkali Metals03:06

Alkali Metals

24.9K
Group 1 elements are soft and shiny metallic solids. They are malleable, ductile, and good conductors of heat and electricity. The melting points of the alkali metals are unusually low for metals and decrease going down the group, while the density increases going down the group with the exception of potassium (Table 1).
Table 1: Properties of the alkali metals
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Bonding in Metals02:32

Bonding in Metals

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Metallic bonds are formed between two metal atoms. A simplified model to describe metallic bonding has been developed by Paul Drüde called the “Electron Sea Model”. 
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Metallic Solids02:37

Metallic Solids

20.8K
Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
20.8K
Metal-Ligand Bonds02:51

Metal-Ligand Bonds

24.4K
The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes.
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
24.4K
Properties of Transition Metals02:58

Properties of Transition Metals

30.0K
Transition metals are defined as those elements that have partially filled d orbitals. As shown in Figure 1, the d-block elements in groups 3–12 are transition elements. The f-block elements, also called inner transition metals (the lanthanides and actinides), also meet this criterion because the d orbital is partially occupied before the f orbitals.
30.0K
Organic Compounds03:02

Organic Compounds

57.5K
All living things are formed mostly of carbon compounds called organic compounds. The category of organic compounds includes both natural and synthetic compounds that contain carbon. Although a single, precise definition has yet to be identified by the chemistry community, most agree that a defining trait of organic molecules is the presence of carbon as the principal element, bonded to hydrogen and other carbon atoms. However, some carbon-containing compounds such as carbonates, cyanides, and...
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Updated: Feb 8, 2026

Synthesis and Characterization of Functionalized Metal-organic Frameworks
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Synthesis and Characterization of Functionalized Metal-organic Frameworks

Published on: September 5, 2014

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Metal-Organic Framework Based Microcapsules.

Ting He1,2,3, Xiaobin Xu1, Bing Ni1

  • 1Key Lab of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing, 100084, China.

Angewandte Chemie (International Ed. in English)
|June 30, 2018
PubMed
Summary
This summary is machine-generated.

Researchers developed novel Metal-Organic Framework (MOF)-based microcapsules with unique bowl-like structures using a competitive coordination strategy. These MOF microcapsules demonstrate excellent performance in adsorbing and removing iodine from vapor and solution.

Keywords:
bowl-like structurecompetitive coordinationiodine adsorptionmetal-organic frameworks (MOFs)microcapsules

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Chemistry

Background:

  • Metal-Organic Frameworks (MOFs) possess rigid, crystalline structures.
  • Microcapsules are typically formed from soft materials like polymers.
  • Synthesizing MOF-based microcapsules with nanoscale precision is challenging.

Purpose of the Study:

  • To develop a novel strategy for synthesizing MOF-based microcapsules.
  • To create MOF microcapsules with unique bowl-like nanostructures.
  • To investigate the performance of these novel MOF microcapsules in iodine adsorption.

Main Methods:

  • A competitive coordination strategy was employed for synthesis.
  • Competitive reagents were used to partially disrupt MOF structures.
  • The process introduced flexibility, leading to bowl-like microcapsule formation.

Main Results:

  • Successfully synthesized MOF-based microcapsules with novel bowl-like structures.
  • The unique nanostructure enhances performance in adsorbing iodine.
  • The microcapsules exhibit excellent stability for iodine removal from both vapor and solution.

Conclusions:

  • The competitive coordination strategy offers a new route to MOF-based microcapsules.
  • The resulting bowl-like MOF microcapsules show high potential for iodine capture applications.
  • This work opens new avenues for designing advanced MOF-based materials.