Puneet Puhup, Shao Sheng-Wei, Ho Rong-Ming
Department of Chemical Engineering, National Tsing Hua University No. 101, Section 2, Kuang-Fu Road, Hsinchu, Taiwan, 30013, Republic of China.
Macromol Rapid Commun. 2023 Jan;44(1):e2200369. doi: 10.1002/marc.202200369. Epub 2022 Jul 14.
Many sophisticated chiral materials are found in living organisms, giving specific functions and required complexity. Owing to the remarkable optical properties of chiral materials, they have drawn significant attention for the development of synthetic materials to give optical activities for appealing applications. In contrast to a top-down approach, the bottom-up approach from self-assembled systems with chiral host-achiral guest and achiral guest-chiral host for induced circular dichroism and induced circularly polarized luminescence has greatly emerged because of its cost-effective advantage with easy fabrication for mesoscale assembly. Self-assembled hierarchical textures with chiral sense indeed give significant amplification of the dissymmetry factors of absorption and luminescence (g and g ), resulting from the formation of well-ordered superstructures and phases with the building of chromophores and luminophores. By taking advantage of the microphase separation of block copolymers via self-assembly, a variety of well-defined chiral nanostructures can be formed as tertiary superstructures that can be further extended to quaternary phases in bulk or thin film. In this article, a conceptual perspective is presented to utilize the self-assembly of chiral block copolymers with chiral communications, giving quaternary phases with well-ordered textures at the nanoscale for significant enhancement of dissymmetry factors.
许多复杂的手性材料存在于生物有机体中，赋予特定功能和所需的复杂性。由于手性材料具有卓越的光学性质，它们在开发具有光学活性以用于吸引人的应用的合成材料方面引起了极大关注。与自上而下的方法不同，由手性主体-非手性客体和非手性客体-手性主体组成的自组装系统用于诱导圆二色性和诱导圆偏振发光的自下而上方法因其具有成本效益的优势以及易于制造中尺度组装而大量涌现。具有手性意义的自组装分级结构确实会显著放大吸收和发光的不对称因子（g和g），这是由于形成了具有发色团和发光团的有序超结构和相。通过利用嵌段共聚物通过自组装进行的微相分离，可以形成各种定义明确的手性纳米结构作为三级超结构，其可以在本体或薄膜中进一步扩展到四级相。在本文中，提出了一种概念性观点，即利用具有手性通讯的手性嵌段共聚物的自组装，在纳米尺度上形成具有有序结构的四级相，以显著提高不对称因子。
