Triptycene-derived calix[6]resorcinarene-like hosts: synthesis, structure and self-assemblies in the solid state.

Area of Science:

• Supramolecular Chemistry
• Organic Synthesis
• Materials Science

Background:

• Calix[6]resorcinarenes are well-established macrocyclic hosts with diverse applications.
• Triptycene units offer rigid, three-dimensional scaffolds for molecular design.
• Controlling molecular conformation and self-assembly is crucial for host-guest chemistry.

Purpose of the Study:

• To design and synthesize novel triptycene-derived calix[6]resorcinarene-like host molecules.
• To investigate the conformational properties and solid-state self-assembly behavior of these new hosts.
• To explore the potential of these rigid hosts in supramolecular chemistry.

Main Methods:

• Multi-step organic synthesis utilizing triptycene building blocks.
• Spectroscopic characterization (NMR, Mass Spectrometry) to confirm structures.
• Single-crystal X-ray diffraction to elucidate solid-state structures and conformations.

Main Results:

• Successful synthesis of a new class of triptycene-derived calix[6]resorcinarene-like compounds.
• All synthesized compounds were confirmed to be cis-isomers with a fixed cone conformation.
• X-ray crystallography revealed the formation of head-to-head dimeric structures in the solid state.

Conclusions:

• The designed triptycene-derived calix[6]resorcinarene-like hosts possess a rigid, fixed cone conformation.
• These hosts exhibit predictable self-assembly into dimeric structures in the solid state.
• This work provides a new platform for developing advanced supramolecular architectures and functional materials.