Blue-emissive two-component supergelator with aggregation-induced enhanced emission

Area of Science:

• Supramolecular Chemistry
• Materials Science
• Organic Chemistry

Background:

• Two-component organogels offer advantages but are difficult to design.
• Developing new strategies for creating organogels with unique optical and mechanical properties is crucial.

Purpose of the Study:

• To report a new class of two-component supergelators.
• To explore the assembly of acid-functionalized tetraphenylethylene (TPE)-based dendrons and alkylated melamine.
• To investigate the optical and mechanical properties of the resulting gels.

Main Methods:

• Synthesis of TPE-based dendrons and alkylated melamine.
• Studying the self-assembly and gelation behavior of the individual components and their complex.
• Characterizing the optical properties (fluorescence) and mechanical properties (storage modulus) of the organogels.

Main Results:

• Individual components showed no gelation, but their hydrogen-bonded complex formed remarkable gels.
• The primary driving force for gelation was identified as strong π-π stacking interactions of TPE units.
• The resulting gels exhibited intense fluorescence emission due to arrested C(sp2)-C(sp2) bond rotation in TPEs and excellent elastic response.

Conclusions:

• This approach enables the creation of functional nanomaterials with emergent properties.
• The rational design of molecular components is key to achieving desired properties in two-component organogels.
• The developed supergelators show potential for applications requiring advanced optical and mechanical characteristics.