Triazole-modified triphenylene derivative: self-assembly and sensing applications

Area of Science:

• Materials Science
• Organic Chemistry
• Supramolecular Chemistry

Background:

• Discotic liquid crystals (DLCs) are crucial for self-assembly studies.
• Triphenylene derivatives are known for their liquid crystalline properties.
• The incorporation of specific functional groups can tune the self-assembly behavior and properties of DLCs.

Purpose of the Study:

• To synthesize a triphenylene-based discotic liquid crystal incorporating 1,2,3-triazole groups.
• To investigate the thermal stability and self-assembly behavior of the synthesized compound.
• To explore its potential as a sensory material.

Main Methods:

• Synthesis of triphenylene-based discotic liquid crystal 3 using "click" chemistry.
• Thermal analysis to determine mesophase stability.
• Solvent-based self-assembly studies to form organogels.
• Characterization of organogel network structure.
• Investigation of the effect of Cadmium (Cd2+) ions on self-assembly.
• Fluorescence spectroscopy to assess sensory capabilities.

Main Results:

• Successful synthesis of triphenylene-based discotic liquid crystal 3 with triazole groups.
• Compound 3 exhibits good thermal stability and columnar mesophases down to room temperature.
• Formation of organogels in cyclohexane and mixed solvents (hexane/dichloromethane).
• Characterization revealed a porous network in the cyclohexane organogel.
• Cadmium (Cd2+) ions disrupted the self-assembly of derivative 3.
• Derivative 3 shows strong emission in its nonaggregated form.

Conclusions:

• The synthesized triphenylene-based discotic liquid crystal 3 is thermally stable and forms robust organogels.
• The triazole groups enhance the stability of columnar mesophases and facilitate gelation.
• The material's self-assembly is sensitive to metal ions like Cd2+.
• Its strong fluorescence emission makes it a promising candidate for detecting nitroaromatic compounds.