Tricomponent Supramolecular Multiblock Copolymers with Tunable Composition via Sequential Seeded Growth.

Area of Science:

• Supramolecular chemistry
• Polymer science
• Organic electronics

Background:

• Designing supramolecular block co-polymers (BCP) with predictable sequences from small monomers is challenging.
• Existing methods often lack precise control over microstructure and sequential assembly.
• Functional organic heterostructures are crucial for optoelectronics and catalysis.

Purpose of the Study:

• To report the synthesis of tri-component supramolecular BCPs with tunable microstructure.
• To demonstrate a kinetically controlled sequential seeded supramolecular polymerization method.
• To utilize fluorescent monomers for probing and visualization of the polymerization process.

Main Methods:

• Synthesis of core-substituted naphthalene diimide (cNDI) derivatives with β-sheet forming peptide side chains.
• Kinetically controlled sequential seeded supramolecular polymerization of fluorescent π-conjugated monomers.
• Spectroscopic probing and Structured Illumination Microscopy (SIM) for characterization.

Main Results:

• Successfully synthesized tri-component supramolecular BCPs with tunable microstructures.
• Demonstrated spectral complementarity and minimal structural mismatch of cNDI monomers.
• Enabled real-time spectroscopic monitoring and microscopic visualization of the seeded growth process.

Conclusions:

• Kinetically controlled sequential seeded supramolecular polymerization offers a powerful route to complex BCPs.
• This approach mimics multi-step synthesis of covalent BCPs.
• Provides a versatile platform for creating functional organic heterostructures for optoelectronic and catalytic applications.