Libraries of composite polyfluors built from fluorescent deoxyribosides

Area of Science:

• Molecular Chemistry
• Biotechnology
• Materials Science

Background:

• Fluorescent molecules are crucial in various scientific applications.
• Developing water-soluble and tunable fluorescent materials remains a challenge.
• DNA-like structures offer a versatile scaffold for molecular assembly.

Purpose of the Study:

• To synthesize and characterize a new class of water-soluble fluorescent molecules called polyfluors.
• To explore the assembly of multiple fluorophores on a DNA-like backbone.
• To investigate the unique optical properties of these novel molecular constructs.

Main Methods:

• Synthesis of four distinct fluorophore deoxyribosides.
• Assembly of fluorophores into oligofluor strings using DNA synthesis techniques.
• Generation of a library of 256 tetrafluors via split and pool methods on polystyrene beads.
• Characterization of polyfluor properties using fluorescence microscopy and solution-based measurements.

Main Results:

• Successful synthesis of water-soluble polyfluors with a DNA-like backbone.
• Generation of a diverse library exhibiting 40-50 distinct hues and intensities.
• Resynthesized tetrafluors in pure form demonstrated unique properties, including large Stokes shifts.
• The assembled polyfluors exhibit emergent optical properties absent in individual fluorophores.

Conclusions:

• Polyfluors represent a new class of tunable, water-soluble fluorescent materials.
• DNA-like scaffolds enable the creation of complex fluorescent systems with emergent properties.
• This work opens avenues for advanced applications in imaging, sensing, and diagnostics.