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Non-stoichiometric defects refer to a type of defect in the crystal structure of a compound where the ratio of its constituent elements deviates from the ideal stoichiometric ratio. There are two main types of non-stoichiometric defects: metal excess defects and metal deficiency defects.Metal excess defects occur when there is a slight surplus of metal ions than what is required by the stoichiometric ratio of the compound. For example, heating a sodium chloride crystal in sodium vapor results...
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Organometallic compounds are compounds that contain a carbon–metal bond. Carbon belongs to an organyl group like alkyl, aryl, allyl, or benzyl groups. The metal can be from Group I or Group II of the periodic table, a transition metal, or a semimetal.
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Defect-Engineered Metal-Organic Frameworks.

Zhenlan Fang1, Bart Bueken2, Dirk E De Vos3

  • 1Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816 (V.R. China). iamzlfang@njtech.edu.cn.

Angewandte Chemie (International Ed. in English)
|June 4, 2015
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Summary

Defect engineering in metal-organic frameworks (MOFs) offers new ways to control material properties like band gap and conductivity. This review categorizes MOF defects and explores their applications, guiding future research.

Keywords:
coordination chemistrydefects engineeringheterogeneitymetal-organic frameworksporous materials

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Area of Science:

  • Materials Science
  • Chemistry

Background:

  • Defect engineering in metal-organic frameworks (MOFs) is crucial for tailoring material properties.
  • Controlling defects impacts sorption, catalysis, band gap, and electronic properties.
  • Characterizing defects in MOFs and coordination network compounds (CNCs) remains challenging.

Purpose of the Study:

  • To provide a comprehensive overview of defects in MOFs/CNCs.
  • To classify and characterize various types of defects.
  • To discuss the applications and future potential of defect-engineered MOFs/CNCs.

Main Methods:

  • Literature review of selected reports over several decades.
  • Analysis of defect classification and characterization techniques.
  • Comparison of defect engineering in MOFs/CNCs with zeolites and covalent organic frameworks (COFs).

Main Results:

  • MOF defect engineering enables control over physical characteristics beyond traditional applications.
  • Defects can be inherent or intentionally created, impacting material functionality.
  • Defective MOFs/CNCs show potential in diverse applications.

Conclusions:

  • Defect engineering is a powerful strategy for advancing MOF/CNC applications.
  • Further research is needed for robust defect characterization and utilization.
  • Defect-engineered MOFs/CNCs hold significant promise for future materials science innovations.