State Key Lab of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, P. R. China.
CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology (NCNST), Beijing, 100190, P. R. China.
Adv Sci (Weinh). 2022 Sep;9(26):e2202636. doi: 10.1002/advs.202202636. Epub 2022 Jul 21.
Flexible circularly polarized luminescence (CPL) switching devices have been long-awaited due to their promising potential application in wearable optoelectronic devices. However, on account of the few materials and complicated design of manufacturing systems, how to fabricate a flexible electric-field-driven CPL-switching device is still a serious challenge. Herein, a flexible device with multiple optical switching properties (CPL, circular dichroism (CD), fluorescence, color) is designed and prepared efficiently based on proton-coupled electron transfer (PCET) mechanism by optimizing the chiral structure of switching molecule. More importantly, this device can maintain the switching performance even after 300 bending-unbending cycles. It has a remarkable comprehensive performance containing bistable property, low open voltage, and good cycling stability. Then, prototype devices with designed patterns have been fabricated, which opens a new application pattern of CPL-switching materials.
柔性圆偏振发光（CPL）开关器件由于在可穿戴光电设备中有广阔的应用前景而备受期待。然而，由于材料有限且制造系统设计复杂，如何制造柔性电场驱动的 CPL 开关器件仍然是一个严峻的挑战。在此，通过优化开关分子的手性结构，基于质子耦合电子转移（PCET）机制，设计并高效制备了具有多种光学开关性能（CPL、圆二色性（CD）、荧光、颜色）的柔性器件。更重要的是，即使在 300 次弯曲-展开循环后，该器件仍能保持其开关性能。它具有显著的综合性能，包括双稳特性、低开启电压和良好的循环稳定性。然后，还制备了具有设计图案的原型器件，为 CPL 开关材料开辟了新的应用模式。
