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Spiroligomer-Based Macrocycles for Atomically Precise Membranes.

Yihui Xie1, Danni Luo1, Jesse A Wiener1

  • 1Department of Chemistry, Temple University, 1901N. 13th St., Philadelphia, PA-19122, USA.

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|April 19, 2023
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Summary
This summary is machine-generated.

Researchers developed novel peptidomimetic macrocycles using spiro-ladder oligomers. These stable, shape-persistent macrocycles form membranes with precise pores for molecular sieving applications.

Keywords:
Atomic PrecisionMacrocyclesMembranesMolecular SievingSpiroligomers

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Area of Science:

  • Supramolecular Chemistry
  • Materials Science

Background:

  • Peptidomimetic macrocycles are crucial in drug discovery and materials science.
  • Achieving conformational stability and precise three-dimensional structures remains a challenge.

Purpose of the Study:

  • To introduce a new class of peptidomimetic macrocycles with inherent structural rigidity.
  • To demonstrate their self-assembly into functional membranes for molecular separation.

Main Methods:

  • Modular solid-phase synthesis of fused-ring spiro-ladder oligomers (spiroligomers).
  • Characterization using two-dimensional nuclear magnetic resonance (2D NMR) for structural confirmation.
  • Fabrication of macrocyclic membranes and assessment of molecular sieving properties.

Main Results:

  • Successfully synthesized peptidomimetic macrocycles with well-defined 3D structures and low conformational flexibility.
  • Confirmed shape persistency of the macrocycles using 2D NMR.
  • Demonstrated formation of membranes with atomically precise pores exhibiting size- and shape-dependent molecular sieving.

Conclusions:

  • Spiroligomer-based macrocycles offer exceptional structural diversity and stability.
  • These macrocycles represent a promising platform for advanced materials, particularly for precise molecular separation.
  • Potential for broader applications in various scientific fields is highlighted.