Iterative SuFEx approach for sequence-regulated oligosulfates and its extension to periodic copolymers

Area of Science:

• Polymer Chemistry
• Organic Synthesis
• Materials Science

Background:

• Precise control over oligosulfate sequence synthesis remains a significant challenge in chemistry.
• Existing methods lack the ability to reliably regulate reactivity for complex oligosulfate structures.

Purpose of the Study:

• To establish a method for synthesizing sequence-regulated oligosulfates.
• To demonstrate a novel iterative approach for oligosulfate chain construction.
• To explore the application of synthesized oligosulfates in materials science.

Main Methods:

• A multi-directional divergent iterative method based on chain homologation was employed.
• Fluorosulfate units were regenerated during the iterative process.
• High-resolution mass spectrometry was used to determine oligosulfate sequences via hydrolyzed fragments.

Main Results:

• Successful synthesis of sequence-determined oligosulfates using the iterative ligation approach.
• Periodic copolymers of polysulfates were synthesized using oligomeric bisfluorosulfates in a bi-directional manner.
• Demonstrated the preparation of crosslinked network polymers with potential as synthetic adhesive materials.

Conclusions:

• The developed iterative ligation method provides a viable route to sequence-controlled oligosulfates.
• This approach facilitates the synthesis of complex polysulfate architectures.
• The synthesized materials show promise for applications as advanced synthetic adhesives.