Fluorine substitution enhances the self-assembling ability of hydrogelators

Area of Science:

• Biomaterials Science
• Supramolecular Chemistry
• Tissue Engineering

Background:

• Supramolecular hydrogels are promising for tissue culture scaffolds, requiring optimal mechanical strength and biocompatibility.
• Limited systematic studies exist on the structure-property relationships (mechanical or cytotoxic) of these hydrogels.

Purpose of the Study:

• To investigate the impact of fluorine substitution on the self-assembly and cytotoxicity of novel hydrogelators.
• To establish structure-property correlations for designing enhanced supramolecular hydrogels.

Main Methods:

• Rational design and synthesis of three hydrogelators and their phosphate precursors.
• Systematic evaluation of self-assembling properties and cytotoxicity assays.

Main Results:

• Fluorine substitution on the phenylalanine motif significantly enhanced self-assembly and cytotoxicity.
• Trifluoromethyl substitution did not yield similar improvements, indicating specificity in fluorine's effect.

Conclusions:

• Fluorination of hydrogelators is a viable strategy to improve supramolecular hydrogel properties.
• This research provides a foundation for developing advanced hydrogels for biomedical applications, particularly in tissue engineering.