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

Siyang Lin, Yuqi Tang, Wenxin Kang, Hari Krishna Bisoyi, Jinbao Guo () and Quan Li ()
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Siyang Lin: Beijing University of Chemical Technology
Yuqi Tang: Southeast University
Wenxin Kang: Beijing University of Chemical Technology
Hari Krishna Bisoyi: Kent State University
Jinbao Guo: Beijing University of Chemical Technology
Quan Li: Southeast University

Nature Communications, 2023, vol. 14, issue 1, 1-11

Abstract: Abstract 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 Förster 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.

Date: 2023
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DOI: 10.1038/s41467-023-38801-1

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