Aurone-derived 1,2,3-triazoles as potential fluorescence molecules in vitro

Area of Science:

• Natural product chemistry
• Organic synthesis
• Fluorescence spectroscopy

Background:

• Aurones are natural yellow pigments with known fluorescence and biological activities.
• Traditional aurone synthesis involves Knoevenagel condensation.
• 1,2,3-triazole structures are recognized for their utility as fluorophores with large Stokes shifts.

Purpose of the Study:

• To explore the potential of novel aurone-derived triazole compounds (ATs) as fluorescent probes.
• To investigate the photophysical properties of these new ATs.
• To assess their suitability for live-cell imaging applications.

Main Methods:

• Synthesis of a new aurone derivative incorporating a 1,2,3-triazole moiety.
• Characterization of the synthesized compound's fluorescent properties.
• Measurement of Stokes shift and fluorescence behavior in different environments.

Main Results:

• Successful synthesis of a novel aurone-derived triazole compound.
• Demonstration of significant fluorescence with a large Stokes shift (118.3 ± 1.01 nm in PBS).
• Observation of increased fluorescence in protic environments, a unique characteristic for aurone derivatives.

Conclusions:

• The newly synthesized ATs represent a promising class of fluorophores.
• These compounds possess advantageous photophysical properties for potential use as live-cell probes.
• The observed environmental sensitivity offers unique possibilities for bioimaging.