A mesogenic triphenylene-perylene-triphenylene triad

Area of Science:

• Materials Science
• Organic Chemistry
• Supramolecular Chemistry

Background:

• Triphenylene and perylene derivatives are key building blocks in organic electronics and supramolecular chemistry.
• Achieving homogeneous mixtures of incompatible functional units in columnar liquid crystals remains a challenge.
• Designing molecular architectures that control self-assembly and material properties is crucial for developing new functional materials.

Purpose of the Study:

• To develop a straightforward synthesis for triphenylene-perylene-triphenylene triad structures.
• To investigate the self-assembly and liquid crystalline properties of these novel triad molecules.
• To explore the potential of these triads as dopants for modifying the properties of columnar triphenylene matrices.

Main Methods:

• Synthesis of triphenylene intermediates with oxyalkyl amine side chains.
• Construction of triphenylene-perylene-triphenylene triad structures.
• Characterization of the synthesized compounds using techniques such as NMR and DSC.
• Investigation of liquid crystalline phase behavior and doping capabilities.

Main Results:

• A facile synthetic route to triphenylene-perylene-triphenylene triads was established.
• The PBITP(10) triad exhibited a stable columnar mesophase, indicating favorable molecular packing.
• A mixture of a hexahexyloxytriphenylene matrix doped with 0.1% PBITP(10) was found to be homogeneous and liquid crystalline, demonstrating successful doping.

Conclusions:

• The developed synthetic strategy provides access to versatile triphenylene-perylene-triphenylene structures.
• PBITP(10) demonstrates excellent liquid crystalline properties and serves as an effective dopant for triphenylene matrices.
• These findings open avenues for creating functionalized columnar materials by incorporating incompatible units.