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Porous liquids.

Niamh O'Reilly1, Nicola Giri, Stuart L James

  • 1Centre for the Theory and Application of Catalysis (CenTACat), School of Chemistry and Chemical Engineering, Queen's University Belfast, David Keir Building, Stranmillis Road, Belfast, Northern Ireland BT9 5 AG, UK.

Chemistry (Weinheim an Der Bergstrasse, Germany)
|March 14, 2007
PubMed
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Introducing porous liquids, novel materials with permanent intrinsic microporosity. These liquids combine solid-like sorption with liquid-like mass transfer for advanced applications.

Area of Science:

  • Materials Science
  • Supramolecular Chemistry
  • Physical Chemistry

Background:

  • Liquids typically possess transient, small cavities ('extrinsic' porosity).
  • Permanent porosity is a characteristic of solid materials, limiting their mass transfer properties.

Purpose of the Study:

  • To introduce the novel concept of "porous liquids" with permanent intrinsic microporosity.
  • To propose that these liquids can possess defined, empty pores within their molecular structure.
  • To highlight their potential for molecular recognition and selective sorption.

Main Methods:

  • Designing rigid host molecules with restricted access windows to maintain pore emptiness.
  • Sterically excluding solvent molecules from host cavities to ensure pore accessibility.

Related Experiment Videos

  • Discussing synthetic strategies for creating these unique liquid phases.

    • Main Results:

    • Porous liquids can exhibit permanent, well-defined, empty micropores.
    • These pores are capable of molecular recognition and selective sorption.
    • The materials combine properties of microporous solids with the fluidity and fast kinetics of liquids.

    Conclusions:

    • Porous liquids represent a new class of materials with significant fundamental interest.
    • They offer a unique combination of selective sorption and rapid mass transfer.
    • Existing literature may contain examples of porous liquids not previously characterized as such.