Chen Ying, Cui Huaruo, Duan Ran, Tang Ruiqi, Tong Yingping, Zhao Dongyu, He Wanli
School of Chemistry, Beihang University, Beijing, 100191, People's Republic of China.
Department of Materials Physics and Chemistry, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, People's Republic of China.
Nanotechnology. 2023 Aug 22;34(45). doi: 10.1088/1361-6528/acebf8.
Blue phase liquid crystals (BPLCs) have significant potential in the field of liquid crystal displays (LCDs) and are proposed as potential next-generation of LCDs candidates. However, BPLCs do not emit light directly and need an extra backlight device. As a result, the blue phase liquid crystal display retains the disadvantages of low brightness and low energy efficiency, which remarkably limit its application. Recently, as a kind of novel fluorescent carbon nanomaterials, carbon dots (CDs) have captured considerable attention because of their excellent optical properties. Here, CDs were directly synthesized by a simple solvothermal method and introduced into BPLCs. By combining the excellent optical properties of CDs with the blue phase liquid crystal system, the photoluminescent blue phase liquid crystals (CDs-BPLCs) with self-photoluminescence are prepared. Meanwhile, the stability of BPLCs can be improved by CDs. Such CDs-BPLCs have enormous potential in the development of novel energy-saving display devices.
蓝相液晶（BPLCs）在液晶显示器（LCDs）领域具有巨大潜力，并被提议作为下一代LCDs的潜在候选材料。然而，BPLCs不能直接发光，需要额外的背光源装置。因此，蓝相液晶显示器仍存在亮度低和能量效率低的缺点，这显著限制了其应用。近年来，作为一种新型荧光碳纳米材料，碳点（CDs）因其优异的光学性能而备受关注。在此，通过简单的溶剂热法直接合成CDs并将其引入BPLCs中。通过将CDs的优异光学性能与蓝相液晶体系相结合，制备出具有自发光特性的光致发光蓝相液晶（CDs-BPLCs）。同时，CDs可以提高BPLCs的稳定性。这种CDs-BPLCs在新型节能显示器件的开发中具有巨大潜力。
