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Related Experiment Videos

Well-defined secondary structures.

Adam R Sanford1, Kazuhiro Yamato, Xiaowu Yang

  • 1Department of Chemistry, 811 Natural Sciences Complex, University at Buffalo, State University of New York, Buffalo, NY 14260, USA.

European Journal of Biochemistry
|April 7, 2004
PubMed
Summary
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Researchers designed molecular duplexes using noncovalent interactions for programmable, sequence-specific information storage. This breakthrough enables the creation of self-assembled nanostructures and tunable nanocavities using helical foldamers.

Area of Science:

  • Supramolecular Chemistry
  • Materials Science
  • Nanotechnology

Background:

  • Molecules with defined secondary structures are typically designed using noncovalent interactions.
  • Controlling these interactions allows for the creation of predictable molecular assemblies.

Purpose of the Study:

  • To design and characterize molecules and molecular assemblies with well-defined secondary structures.
  • To develop a systematic approach for designing self-assembled structures based on molecular zippers.
  • To create novel nanostructures and tunable nanocavities using backbone-rigidified unnatural oligomers.

Main Methods:

  • Design and characterization of H-bonded molecular duplexes based on intermolecular interactions.
  • Development of a backbone-rigidification strategy using intramolecular noncovalent interactions.

Related Experiment Videos

  • Synthesis and conformational analysis of unnatural oligomers (oligoaramides, oligoureas, oligo(phenylene ethynylenes)).
  • Creation and size-tuning of nanosized cavities based on helical foldamers.

    • Main Results:

    • Successfully developed information-storing molecular duplexes with programmable, sequence-specific, and tunable stabilities.
    • Demonstrated duplex-directed formation of beta-sheets, block copolymers, and templated organic reactions.
    • Established a backbone-rigidification strategy yielding unnatural molecular strands with defined helical conformations.
    • Created large, tunable nanosized cavities using helical foldamers without altering helical topology.

    Conclusions:

    • Noncovalent interactions provide a powerful tool for designing molecules and self-assembled nanostructures.
    • Molecular zippers offer a systematic approach to creating complex molecular architectures.
    • Helical foldamers represent a versatile platform for the rational design of nanostructures with controllable cavity sizes.