Zheng Anyi, Zhao Tonghan, Jin Xue, Miao Wangen, Duan Pengfei
CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology (NCNST), No. 11 ZhongGuanCun BeiYiTiao, Beijing 100190, P. R. China.
University of Chinese Academy of Sciences, Beijing 100049, P. R. China.
Nanoscale. 2022 Jan 27;14(4):1123-1135. doi: 10.1039/d1nr07069j.
Circularly polarized luminescence (CPL)-active materials have attracted exclusive attention because of their wide potential applications in low-power-consumption displays, encrypted information storage, chiroptical sensors, and so on. However, there is always a trade-off between the luminescence dissymmetry factor () and luminescence quantum yield, which are two critical parameters. Therefore, developing materials with both large values and high luminescence efficiency is a key issue for constructing high-efficiency CPL materials. To date, chiral porous crystalline nanomaterials (PCNMs) including metal-organic frameworks (MOFs), porous organic-cages (POCs), metal-organic cages (MOCs), and supramolecular organic frameworks (SOFs), have shown excellent potential for solving this problem and achieving functional CPL-active materials. In this review, we will summarize several approaches for fabricating CPL-active PCNMs, such as direct synthesis, chirality induction, and symmetry breaking. Furthermore, with flexibly tunable structures and comprehensive host-guest chemistry, modulation and amplification of CPL can be achieved in these PCNMs. We would like to provide insight and perspective that PCNMs can act as an efficient platform in the CPL research field.
圆偏振发光（CPL）活性材料因其在低功耗显示器、加密信息存储、手性光学传感器等方面的广泛潜在应用而备受关注。然而，发光不对称因子（）和发光量子产率这两个关键参数之间始终存在权衡。因此，开发具有大值和高发光效率的材料是构建高效CPL材料的关键问题。迄今为止，包括金属有机框架（MOF）、多孔有机笼（POC）、金属有机笼（MOC）和超分子有机框架（SOF）在内的手性多孔晶体纳米材料（PCNM）在解决这一问题和实现功能性CPL活性材料方面显示出优异的潜力。在这篇综述中，我们将总结几种制备CPL活性PCNM的方法，如直接合成、手性诱导和对称性破缺。此外，凭借灵活可调的结构和全面的主客体化学，这些PCNM可以实现CPL调制和放大。我们希望提供见解和观点，即PCNM可以作为CPL研究领域的一个有效平台。
