Through-bond energy transfer cassettes for multicolor encoding.

Area of Science:

• Materials Science
• Chemistry
• Biotechnology

Background:

• Through-bond energy transfer (TBET) offers a novel approach for creating encoded materials.
• Developing microspheres with multiple, distinct emission signals is crucial for multiplexed assays.

Purpose of the Study:

• To develop and characterize novel encoded polystyrene (PS) microspheres using TBET.
• To demonstrate simultaneous multi-color emission from these engineered microspheres.

Main Methods:

• Codoping PS microspheres with a donor molecule and two TBET cassettes.
• Utilizing high intramolecular TBET efficiencies (98% and 99%) and pseudo-Stokes shifts (70 nm and 160 nm).
• Excitation at 480 nm and analysis of emission spectra, confocal imaging, and flow cytometry.

Main Results:

• Microspheres exhibited simultaneous triple emission peaks at 512 nm, 570 nm, and 656 nm upon excitation at 480 nm.
• High intramolecular TBET efficiencies were achieved.
• Confocal imaging and flow cytometry confirmed satisfactory performance of the encoded microspheres.

Conclusions:

• The developed TBET-based encoded microspheres demonstrate efficient multiplexed signaling capabilities.
• These microspheres show promise for applications requiring simultaneous multi-color detection and encoding.