Design of Aurone-Based Dual-State Emissive (DSE) Fluorophores

Area of Science:

• Organic chemistry
• Materials science
• Biophysics

Background:

• Dual-state emissive (DSE) fluorophores exhibit balanced emission in solution and solid states, crucial for advanced materials.
• Current DSE fluorophores often derive from aggregation-induced emission (AIE) scaffolds like tetraphenylethylenes and triphenylamines.
• There is a need for novel, accessible scaffolds for DSE fluorophore development.

Purpose of the Study:

• To introduce aurones as a novel and accessible scaffold for constructing DSE fluorophores.
• To elucidate the design principles for achieving balanced emission in both solution and solid states using aurones.
• To present the solid-state fluorescence of aurone derivatives for the first time.

Main Methods:

• Synthesis of a systematic series of aurone derivatives.
• Characterization of photophysical properties, including solution and solid-state fluorescence.
• Investigation of structure-property relationships governing DSE behavior in aurones.

Main Results:

• Aurones were successfully utilized as a scaffold for creating DSE fluorophores.
• Balanced emission in both solution and solid states was achieved in aurone derivatives.
• The study presents the first systematic investigation of solid-state fluorescence in aurone derivatives.

Conclusions:

• Aurones represent a promising and easily accessible scaffold for developing DSE fluorophores.
• The findings provide key design principles for creating aurone-based DSE materials.
• The combination of DSE properties and known biological activity of aurones suggests potential in biomedical applications and diagnostics.