Bioinspired, ATP-driven co-operative supramolecular polymerization and its pathway dependence

Area of Science:

• Supramolecular chemistry
• Materials science
• Biomaterials engineering

Background:

• Self-assembly is a fundamental process in biological systems.
• Controlling self-assembly is key to designing advanced nanomaterials.
• Nucleotide interactions offer specific binding motifs for molecular assembly.

Purpose of the Study:

• To demonstrate an ATP-driven, bio-inspired nucleation-growth assembly process.
• To utilize amphiphilic naphthalene diimide (NDI) derivatives with specific recognition units.
• To investigate pathway-dependent self-assembly mechanisms.

Main Methods:

• Synthesis of an amphiphilic NDI derivative with guanidinium receptors.
• Utilizing nucleotide phosphates to direct self-assembly via salt-bridge interactions.
• Employing spectroscopic and microscopic techniques for detailed analysis.

Main Results:

• Achieved ATP-driven nucleation-growth assembly of NDI derivatives.
• Demonstrated pathway-dependent cooperative self-assembly.
• Successfully formed two-dimensional and scrolled nano-tubular bilayer assemblies.
• Distinguished between kinetically and thermodynamically controlled assembly outcomes.

Conclusions:

• The study presents a novel bio-inspired method for controlled nanomaterial fabrication.
• Specific molecular interactions, like salt bridges, can direct complex self-assembly pathways.
• The findings open avenues for designing functional nanostructures with tunable morphologies.