Mu Bin, Hao Xiangnan, Luo Xiao, Yang Zhongke, Lu Huanjun, Tian Wei
Shanxi Key Laboratory of Macromolecular Science and Technology, Xi'an Key Laboratory of Hybrid Luminescent Materials and Photonic Device, MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, 710072, China.
Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application, School of Physical Science and Technology, Suzhou University of Science and Technology, Suzhou, 215009, China.
Nat Commun. 2024 Jan 30;15(1):903. doi: 10.1038/s41467-024-45252-9.
Light-harvesting is an indispensable process in photosynthesis, and researchers have been exploring various structural scaffolds to create artificial light-harvesting systems. However, achieving high donor/acceptor ratios for efficient energy transfer remains a challenge as excitons need to travel longer diffusion lengths within the donor matrix to reach the acceptor. Here, we report a polymeric supramolecular column-based light-harvesting platform inspired by the natural light-harvesting of purple photosynthetic bacteria to address this issue. The supramolecular column is designed as a discotic columnar liquid crystalline polymer and acts as the donor, with the acceptor intercalated within it. The modular columnar design enables an ultrahigh donor/acceptor ratio of 20000:1 and an antenna effect exceeding 100. Moreover, the spatial confinement within the supramolecular columns facilitates control over the energy transfer process, enabling dynamic full-color tunable emission for information encryption applications with spatiotemporal regulation security.
光捕获是光合作用中不可或缺的过程，研究人员一直在探索各种结构支架来创建人工光捕获系统。然而，要实现高效能量转移所需的高供体/受体比例仍然是一项挑战，因为激子需要在供体基质中传播更长的扩散长度才能到达受体。在此，我们报道了一种基于聚合物超分子柱的光捕获平台，其灵感来源于紫色光合细菌的自然光捕获，以解决这一问题。超分子柱被设计为盘状柱状液晶聚合物并充当供体，受体插层于其中。模块化的柱状设计实现了20000:1的超高供体/受体比例以及超过100的天线效应。此外，超分子柱内的空间限制有助于控制能量转移过程，实现具有时空调节安全性的信息加密应用的动态全色可调发射。
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