Cooperative organic alloys nanoparticles built from matching pair of quadrupolar dyes showing unusual fluorescence behaviour

Key Points

• The study investigates the fluorescence properties of nanoparticles made from two quadrupolar dyes.
• Synthesis of binary dye-based fluorescent organic nanoparticles with varying proportions of A and D dyes.
• Analysis of excitation energy transfer efficiency in the nanoparticles.
• Characterization of fluorescence behavior under different excitation conditions.
• Ultrafast excitation energy transfer was observed in the nanoparticles.
• The efficiency of fluorescence was remarkably high due to the cooperative interactions between the dyes.
• Unusual fluorescence behavior was noted, indicating potential for novel applications.