Photo-triggered full-color circularly polarized luminescence based on photonic capsules for multilevel information encryption

Materials with phototunable full-color circularly polarized luminescence (CPL) have a large storage density, high-security level, and enormous prospects in the field of information encryption and decryption. In this work, device-friendly solid films with color tunability are prepared by constructing Forster resonance energy transfer (FRET) platforms with chiral donors and achiral molecular switches in liquid crystal photonic capsules (LCPCs). These LCPCs exhibit photoswitchable CPL from initial blue emission to RGB trichromatic signals under UV irradiation due to the synergistic effect of energy and chirality transfer and show strong time dependence because of the different FRET efficiencies at each time node. Based on these phototunable CPL and time response characteristics, the concept of multilevel data encryption by using LCPC films is demonstrated. Phototunable full-color circularly polarized luminescence (CPL) features large storage density which is important for the field of information encryption and decryption. Here, the authors present a device-friendly solid film with color-tunability by employing Forster resonance energy transfer among a chiral donor and achiral molecular switches in a liquid crystal photonic capsules.

Automated summary

This study demonstrates the development of device-friendly solid films with color tunability by utilizing Forster resonance energy transfer (FRET) platforms consisting of chiral donors and achiral molecular switches in liquid crystal photonic capsules (LCPCs). These LCPCs exhibit photoswitchable circularly polarized luminescence (CPL) from blue emission to RGB trichromatic signals under UV irradiation, showing strong time dependence due to different FRET efficiencies at each time node. Based on these properties, the concept of multilevel data encryption using LCPC films is demonstrated.