Supra-Cyanines: Ultrabright Cyanine-Based Fluorescent Supramolecular Materials in Solution and in the Solid State
Supra-Cyanines: Ultrabright Cyanine-Based Fluorescent Supramolecular Materials in Solution and in the Solid State
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超花青：溶液和固态中的超亮花青基荧光超分子材料
DOI：
10.1002/ange.202311224
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发表时间：
2023
影响因子：
--
通讯作者：
Lu H
中科院分区：
文献类型：
--
作者：
Lu H
具有高亮度的荧光材料在生物成像、光子学和OLED等各种技术的进步中起着至关重要的作用。虽然人们致力于设计具有改进性能的新有机染料，但提高现有染料的亮度也同样重要。在这项研究中，我们提出了一种简单的超分子策略，通过解决与花菁染料相关的长期挑战来开发超亮花菁荧光材料，包括不希望的顺反光异构化和聚集引起的淬灭。超花菁是通过将花菁部分并入基于环肽的超分子支架中而获得的，并且在溶液和固态中均表现出高荧光量子产率（高达50%）。这些发现为构建高发射性菁基超分子材料提供了一种通用的方法。
Fluorescent materials with high brightness play a crucial role in the advancement of various technologies such as bioimaging, photonics, and OLEDs. While significant efforts are dedicated to designing new organic dyes with improved performance, enhancing the brightness of existing dyes holds equal importance. In this study, we present a simple supramolecular strategy to develop ultrabright cyanine‐based fluorescent materials by addressing long‐standing challenges associated with cyanine dyes, including undesired cis‐trans photoisomerization and aggregation‐caused quenching. Supra‐cyanines are obtained by incorporating cyanine moieties in a cyclic peptide‐based supramolecular scaffold, and exhibit high fluorescence quantum yields (up to 50 %) in both solution and in the solid state. These findings offer a versatile approach for constructing highly emissive cyanine‐based supramolecular materials.