Mechanically-Tunable and Full-Color Circularly Polarized Long-Lived Phosphorescence in Chiral Superstructure...

Area of Science:

• Materials Science
• Organic Electronics
• Optoelectronics

Background:

• Developing full-color circularly polarized organic ultralong room-temperature phosphorescence (CP-OURTP) materials with high dissymmetry factor (g_lum) is crucial for optoelectronics.
• Controlling g_lum is vital for material performance but achieving dynamic manipulation remains challenging.

Purpose of the Study:

• To fabricate chiral superstructure elastomers (CSEs) for dynamically tunable CP-OURTP.
• To explore the potential of these materials in information encryption and decryption.

Main Methods:

• Integrating room temperature phosphorescence (RTP) polymers into CSEs.
• Utilizing mechanical deformation to tune g_lum values.
• Characterizing the chiroptical properties and afterglow emissions.

Main Results:

• CSEs exhibited selective reflection colors and tunable CP-OURTP with g_lum switching between 0.8 and 0.15 upon mechanical deformation.
• The materials demonstrated full-color afterglow emissions and superior processability.
• Mechanochromic and programmable CP-OURTP films were achieved.

Conclusions:

• The developed CSEs offer a promising platform for advanced optoelectronic applications.
• This work provides new insights into RTP materials and their dynamic manipulation.
• The materials enable flexible and dynamic information encryption/decryption.