A calix[4]pyrrole-based linear supramolecular polymer constructed by orthogonal self-assembly.

Area of Science:

• Supramolecular Chemistry
• Polymer Science
• Organic Synthesis

Background:

• Calix[4]pyrroles are versatile macrocyclic hosts with tunable properties.
• Ureidopyrimidinone motifs are known for their strong hydrogen bonding capabilities.
• Responsive materials are crucial for advanced applications in sensing and drug delivery.

Purpose of the Study:

• To synthesize a novel calix[4]pyrrole derivative incorporating a ureidopyrimidinone unit.
• To investigate the self-assembly behavior of the synthesized molecule.
• To develop a thermo- and chemical-responsive supramolecular polymer.

Main Methods:

• Synthesis of the alcohol-functionalized calix[4]pyrrole precursor.
• Functionalization of the precursor with a ureidopyrimidinone unit.
• Orthogonal self-assembly driven by quadruple hydrogen bonding and anion recognition.

Main Results:

• Successful synthesis of the target calix[4]pyrrole-ureidopyrimidinone conjugate.
• Demonstration of thermo- and chemical-responsiveness in the self-assembled system.
• Formation of a linear supramolecular polymer through cooperative non-covalent interactions.

Conclusions:

• The synthesized calix[4]pyrrole-ureidopyrimidinone is a valuable building block for responsive materials.
• Orthogonal self-assembly provides a powerful strategy for constructing complex supramolecular architectures.
• This work opens avenues for designing advanced polymers with tunable properties.