Nath Satyapriya, Puthukkudi Adithyan, Mohapatra Jeebanjyoti, Biswal Bishnu P
School of Chemical Sciences, National Institute of Science Education and Research (NISER) Bhubaneswar, Jatni, Khurda, Odisha, 752050, India.
Homi Bhaba National Institute (HBNI), Training School Complex Anushakti Nagar, Mumbai, 400094, India.
Angew Chem Int Ed Engl. 2023 Apr 24;62(18):e202218974. doi: 10.1002/anie.202218974. Epub 2023 Feb 20.
The vastness of organic synthetic strategies and knowledge of reticular chemistry have made covalent organic frameworks (COFs) one of the most chemically and structurally diverse class of materials with potential applications ranging from gas storage, molecular separation, and catalysis to energy storage and magnetism. Recently, this class of porous materials has garnered increasing interest as potential nonlinear optical (NLO) materials. Traditionally, inorganic crystals, small-molecule organic chromophores, and oligomers have been studied for their NLO response. Nevertheless, COFs offer significant advantages over existing NLO materials in terms of higher mechanical strength, thermochemical stability, and extended conjugation. Herein, we discuss crucial aspects, terminology, and measurement techniques related to NLO, followed by a critical analysis of the design principles for COFs with NLO response. Furthermore, we touch on selected potential applications of these NLO materials. Finally, future prospects and challenges of COFs as NLO materials are discussed.
有机合成策略的广泛性和网状化学知识使共价有机框架（COF）成为化学和结构最多样化的材料类别之一，其潜在应用范围从气体存储、分子分离、催化到能量存储和磁性。最近，这类多孔材料作为潜在的非线性光学（NLO）材料引起了越来越多的关注。传统上，人们一直在研究无机晶体、小分子有机发色团和低聚物的NLO响应。然而，COF在机械强度、热化学稳定性和扩展共轭方面比现有的NLO材料具有显著优势。在此，我们讨论与NLO相关的关键方面、术语和测量技术，随后对具有NLO响应的COF的设计原则进行批判性分析。此外，我们还涉及这些NLO材料的选定潜在应用。最后，讨论了COF作为NLO材料的未来前景和挑战。
