A Dipeptide-Based Hierarchical Nanoarchitecture with Enhanced Catalytic Activity

Area of Science:

• Supramolecular chemistry
• Biomimetic catalysis
• Nanomaterials science

Background:

• Developing synthetic architectures with enzyme-like catalytic activity is challenging.
• Simple structures with robust biomimetic functions are highly sought after.
• Existing catalysts often lack stability and reusability.

Purpose of the Study:

• To construct a dipeptide-based hierarchical nanoarchitecture using a facile supramolecular assembly approach.
• To investigate the enzyme-like catalytic activity and stability of the designed nanoarchitecture.
• To explore the reversible transformation of the nanoarchitecture and its effect on catalytic activity.

Main Methods:

• Utilized a coordination-driven directional self-assembly to arrange nanospheres into chain-like structures.
• Investigated the reversible transformation between anisotropic nanochains and isotropic nanospheres.
• Assessed the catalytic performance for hydroquinone oxidation, comparing it to natural enzymes.

Main Results:

• Successfully constructed a dipeptide-based hierarchical nanoarchitecture with ordered structures.
• Demonstrated reversible transformation between nanochains and nanospheres, modulating catalytic activity.
• The nanoarchitecture exhibited high enzyme-like activity and superior long-term stability for hydroquinone oxidation compared to natural enzymes.

Conclusions:

• The supramolecular assembly approach provides a facile route to hierarchical nanoarchitectures.
• Reversible structural transformation allows for switching of biomimetic catalytic activity.
• This work offers a promising strategy for developing reversible and reusable supramolecular biocatalysts.