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Related Experiment Videos

Molecular recognition at crystal interfaces.

I Weissbuch1, L Addadi1, M Lahav1

  • 1Department of Structural Chemistry, The Weizmann Institute of Science, Rehovot 76100, Israel

Science (New York, N.Y.)
|August 9, 1991
PubMed
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This study introduces tailor-made additives for crystal engineering, enabling control over crystal morphology, solid solution structures, and enabling asymmetric synthesis. These additives also revealed a new solvent effect mechanism in crystal growth.

Area of Science:

  • Crystallography
  • Materials Science
  • Supramolecular Chemistry

Background:

  • Crystal nucleation, growth, and dissolution are fundamental processes.
  • Controlling these processes is crucial for materials design and synthesis.
  • Existing methods often lack stereochemical specificity.

Purpose of the Study:

  • To develop a stereochemical approach for controlling crystal properties.
  • To investigate molecular recognition at crystal-solution interfaces.
  • To enable new applications in solid solutions and asymmetric synthesis.

Main Methods:

  • Utilizing "tailor-made" additives designed for stereospecific interactions with crystal surfaces.
  • Applying these additives during crystal growth and dissolution.

Related Experiment Videos

  • Investigating the impact on crystal morphology, solid solution structure, and guest molecule synthesis.

    • Main Results:

    • Achieved precise control over crystal morphology.
    • Revised concepts of solid solution structure and symmetry.
    • Transformed centrosymmetric crystals into polar solid solutions with second-harmonic generation.
    • Enabled asymmetric synthesis of guest molecules within host crystals.
    • Discovered a novel "relay" mechanism for solvent effects on crystal growth.
    • Designed auxiliary molecules for nucleation control, enantiomer resolution, and polymorph crystallization.

    Conclusions:

    • Stereospecific additives offer powerful control over crystallization processes.
    • This methodology advances crystal engineering, solid-state chemistry, and asymmetric synthesis.
    • The discovered mechanisms provide new insights into crystal growth and solvent interactions.