Highly Dissymmetric and Multicolor Circularly Polarized Organic Hyperafterglow

Area of Science:

• Materials Science
• Organic Electronics
• Photonics

Background:

• Circularly polarized organic afterglow (CPOA) materials are crucial for applications like information encryption and 3D displays.
• Achieving high efficiency, long lifetimes, color purity, and a large dissymmetry factor (g_lum) simultaneously in CPOA materials is challenging.

Purpose of the Study:

• To propose an effective design strategy for high-performance circularly polarized hyperafterglow materials.
• To develop multicolor narrowband CP-hyperafterglow polymeric films with enhanced photophysical properties.

Main Methods:

• Integration of narrowband hyperafterglow polymers with cholesteric liquid crystal matrices.
• Characterization of photoluminescence quantum yields, emission bandwidths, lifetimes, and dissymmetry factors.

Main Results:

• Achieved multicolor narrowband CP-hyperafterglow emission with photoluminescence quantum yields up to 81%.
• Exhibited emission bandwidths as narrow as ~40 nm and ultralong lifetimes up to 957 s.
• Demonstrated maximum |g_lum| values of up to 1.3.

Conclusions:

• The proposed strategy offers a simple and reliable route to high-performance CP-hyperafterglow materials.
• The developed materials show potential for information encoding, multilevel encryption, and chiral displays.
• Advances the development of chiral optoelectronic materials and their applications.