Multi-stimuli-responsive hydrogels of gluconamide-tailored anthracene

Area of Science:

• Supramolecular Chemistry
• Materials Science
• Organic Chemistry

Background:

• Amphiphilic gelators are crucial for developing advanced soft materials.
• Anthracene derivatives offer unique photophysical properties for responsive systems.
• Gluconamide moieties can impart specific functionalities and improve biocompatibility.

Purpose of the Study:

• To synthesize and characterize novel amphiphilic gluconamide-tailored anthracene gelators.
• To investigate the stimuli-responsive behaviors of the resulting hydrogels.
• To establish structure-property relationships for designing advanced soft materials.

Main Methods:

• Synthesis of gluconamide-tailored anthracene gelators.
• Hydrogel formation and characterization.
• Stimuli-responsive studies using temperature-dependent 1H NMR, UV-Vis spectroscopy, rheometry, transmission electron microscopy (TEM), and scanning electron microscopy (SEM).

Main Results:

• Stable hydrogels with fibril structures were successfully formed by gelators 1 and 2.
• Hydrogel 1 exhibited multiple stimuli-responsive behaviors (temperature, anions, light, electron-deficient chemicals, external stress).
• Hydrogel 2 displayed a distinct responsive phenomenon, attributed to a subtle structural difference in the linker.

Conclusions:

• Gluconamide-tailored anthracene gelators represent a promising class of soft materials.
• Precise control over molecular structure is critical for tuning the responsive properties of hydrogels.
• These findings pave the way for the rational design of functional supramolecular materials.