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Area of Science:

  • Materials Science
  • Supramolecular Chemistry
  • Crystallography

Background:

  • Inclusion compounds with solid-solid phase transitions show guest molecular structure selectivity.
  • Classical molecular recognition relies on complementary binding, a different mechanism.
  • Solid inclusion compounds are key in various chemical and physical processes.

Purpose of the Study:

  • To review processes involving solid inclusion compounds.
  • To highlight the enhanced selectivity driven by crystal cooperativity.
  • To introduce the concept of 'smart' processes with absolute molecular recognition.

Main Methods:

  • Review of literature on solid-solid phase transitions in inclusion compounds.
  • Analysis of selectivity mechanisms beyond classical molecular recognition.
  • Categorization of processes involving inclusion compounds, including 'smart' systems.

Main Results:

  • Formation and decomposition of inclusion compounds are highly selective for guest molecular structure.
  • Cooperativity of molecular crystals significantly boosts selectivity.
  • Certain processes demonstrate "smart" behavior, achieving near-absolute molecular recognition.

Conclusions:

  • Solid inclusion compounds offer a unique platform for selective molecular interactions.
  • Cooperativity in crystal lattices is crucial for achieving high selectivity.
  • These systems pave the way for advanced molecular recognition technologies and smart materials.