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Finite Element Modelling of a Cellular Electric Microenvironment

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Adaptation to shape switching by component selection in a constitutional dynamic system.

Sébastien Ulrich¹, Jean-Marie Lehn

¹Institut de Science et d'Ingénierie Supramoléculaires (ISIS), 8 allée Gaspard Monge, 67083 Strasbourg, France.

Journal of the American Chemical Society

|February 12, 2009

Summary

This summary is machine-generated.

Morphological switches are molecules that change shape, enabling dynamic covalent systems to adapt their composition. Metal ion-induced shape changes in core components drive selective self-assembly and constitutional adaptation.

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Area of Science:

Supramolecular Chemistry
Materials Science
Chemical Engineering

Background:

Molecules can exist in distinct accessible shape states, termed morphological switches.
Dynamic covalent systems can adapt their composition to achieve optimal states through component selection.
Metal cations can induce shape switching in core components, leading to dynamic system adaptation.

Purpose of the Study:

Investigate component selection in dynamic covalent systems driven by metal-induced shape switching.
Understand the role of molecular shape, geometry, and coordination features in self-assembly.
Explore how morphological switching influences constitutional adaptation and component exchange.

Main Methods:

Studied dynamic covalent constituents undergoing W and U shape switching.
Utilized metal cation induction for shape control.
Performed competition experiments in solution and analyzed solid-state structures.
Investigated shape-dependent self-sorting of metal ions and components.

Main Results:

Demonstrated shape-dependent self-sorting of metal ions and components.
Revealed the critical role of molecular shape, geometry, and coordination features in self-assembly.
Showed that morphological switching of one component can trigger the exchange of complementary components for more stable assemblies.
Observed constitutional adaptation through inversion of selection preferences upon metal ion addition/removal.

Conclusions:

Molecular shape plasticity, coordination features, and phase changes are key drivers in dynamic covalent systems.
Morphological switches, controlled by metal ions, enable adaptive self-assembly and constitutional evolution.
The system exhibits tunable self-assembly and component selection based on external stimuli.