Multi-stimuli-responsive chiral organogels based on peptide derivatives

Area of Science:

• Supramolecular Chemistry
• Materials Science

Background:

• Low molecular weight gelators are crucial in materials science.
• Chiral compounds offer unique properties for advanced applications.

Purpose of the Study:

• To investigate chiral aryl amide compounds with peptide pendants as novel low molecular weight gelators.
• To explore the stimuli-responsive behavior of these organogels.

Main Methods:

• Synthesis of chiral aryl amide compounds with peptide pendants.
• Mechanistic studies to understand gel formation.
• Investigation of multi-stimuli-responsive properties (thermal, pH, enantiomeric purity, fluoride anion).

Main Results:

• Complementary hydrogen bonding from peptide pendants drives organogel formation.
• The organogels exhibit multi-stimuli-responsive behavior.
• Enantiomeric purity acts as a sensitive stimulus, causing gel disassembly with minimal enantiomer addition (0.02 equiv.).

Conclusions:

• A new class of chiral organogels has been developed.
• These gelators demonstrate significant potential as smart materials.
• Applications in chiral sensors, recognition, and separation are promising.