Molecular recognition and self-assembly special feature: Disproportionation and self-sorting in molecular...

Area of Science:

• Supramolecular Chemistry
• Nanotechnology
• Materials Science

Background:

• Self-assembled capsules are synthetic nanoscale host structures formed by multiple subunits.
• These capsules encapsulate small molecules, mimicking biological systems like enzymes and receptors.
• Homomeric assemblies are common, but heteromeric assemblies offer varied recognition properties.

Purpose of the Study:

• To explore the assembly and properties of hybrid synthetic capsules.
• To investigate if combining different capsule-forming modules yields novel host functionalities.
• To demonstrate the potential of diverse modules in creating new supramolecular architectures.

Main Methods:

• Utilized two distinct molecular structures capable of self-assembly via hydrogen bonding.
• Constructed hybrid capsules by co-assembling these different subunits.
• Characterized the host-guest properties of the resulting hybrid capsules.

Main Results:

• Successfully assembled hybrid capsules from two dissimilar hydrogen-bonding modules.
• Observed that these hybrid capsules possess distinct host properties compared to their parent homomeric capsules.
• Demonstrated the dynamic nature and spectroscopic observability of encapsulated molecules within the hybrid structures.

Conclusions:

• Hybrid capsule formation is feasible by combining unrelated modules with suitable properties.
• The host-guest characteristics of synthetic capsules can be significantly altered by creating heteromeric assemblies.
• This work suggests a broader design principle for creating novel supramolecular capsules from diverse building blocks.