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Coordination polymers (CPs) and metal-organic frameworks (MOFs) can form glasses, offering advantages over crystalline forms. This review explores their phase transitions, properties, and future potential in amorphous materials.

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Area of Science:

  • Materials Science
  • Solid-State Chemistry
  • Crystallography

Background:

  • Coordination polymers (CPs) and metal-organic frameworks (MOFs) are crystalline materials with diverse applications.
  • The crystal-liquid-glass phase transition in CPs/MOFs presents an opportunity to develop novel amorphous materials.
  • Conventional glasses lack the tunable properties achievable through coordination chemistry.

Purpose of the Study:

  • To review the current understanding of anomalous phase transitions in CPs/MOFs.
  • To elaborate on criteria for classifying CP/MOF glasses.
  • To discuss strategies for obtaining the glassy state in CPs/MOFs.

Main Methods:

  • Comprehensive literature review of CP/MOF glass research.
  • Analysis of phase transition mechanisms in CPs/MOFs.
  • Discussion of synthesis strategies for CP/MOF glasses.

Main Results:

  • The glassy state in CPs/MOFs offers advantages like improved mass transport and mechanical properties.
  • Three common strategies exist for achieving the glassy state in CPs/MOFs.
  • Research on CP/MOF glasses has progressed significantly since its inception.

Conclusions:

  • CP/MOF glasses represent a promising new class of amorphous materials with tunable properties.
  • Further research is needed to overcome current challenges and explore future directions in CP/MOF glass development.