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Near-Infrared Phosphorescent Switch of Diarylethene Phenylpyridinium Derivative and Cucurbit[8]uril for Cell Imaging
Small ( IF 13.0 ) Pub Date : 2022-04-23 , DOI: 10.1002/smll.202201821 Conghui Wang 1 , Yao-Hua Liu 1 , Yu Liu 1
Small ( IF 13.0 ) Pub Date : 2022-04-23 , DOI: 10.1002/smll.202201821 Conghui Wang 1 , Yao-Hua Liu 1 , Yu Liu 1
Affiliation
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Near-infrared (NIR) pure organic room-temperature phosphorescence (RTP) materials have received growing research interest due to their wide application in the fields of high-resolution bioimaging and luminescent materials. In this work, the authors report a macrocycle-confined pure organic RTP supramolecular assembly, which is constructed by diarylethene phenylpyridinium derivative (DTE-TP) and cucurbit[8]uril (CB[8]). Compared with CB[6] and CB[7], the larger cavity of CB[8] induces molecular folding and enhances the intramolecular charge transfer interactions, which leads to the obtained assembly emitting efficient NIR phosphorescence at 700 nm. Due to the photochromism of the diarylethene core, the NIR phosphorescence is reversibly regulated by light irradiation at wavelengths of 365 and >600 nm. Furthermore, cell-based experiments show that this supramolecular assembly is located in the lysosomes and displays a NIR phosphorescence at 650–750 nm. In addition, by means of phosphorescence resonance energy transfer, the obtained assembly exhibits a red-shifted NIR emission at 817 nm. This supramolecular phosphorescent switch provides a convenient path for the modular design of water-soluble pure organic room-temperature NIR phosphorescent materials.
中文翻译：
用于细胞成像的二芳基乙烯苯基吡啶衍生物和葫芦[8]脲的近红外磷光开关
近红外（NIR）纯有机室温磷光（RTP）材料因其在高分辨率生物成像和发光材料领域的广泛应用而受到越来越多的研究关注。在这项工作中，作者报道了一种由二芳基乙烯苯基吡啶鎓衍生物（DTE-TP）和葫芦[8]脲（CB[8]）构成的大环限域纯有机RTP超分子组装体。与 CB[6] 和 CB[7] 相比，CB[8] 的较大空腔诱导分子折叠并增强分子内电荷转移相互作用，从而导致所获得的组件在 700 nm 处发射有效的近红外磷光。由于二芳基乙烯核心的光致变色，近红外磷光通过波长为 365 和 >600 nm 的光照射可逆地调节。此外，基于细胞的实验表明，这种超分子组装体位于溶酶体中，并在 650-750 nm 处显示 NIR 磷光。此外，通过磷光共振能量转移，获得的组件在 817 nm 处呈现红移近红外发射。这种超分子磷光开关为水溶性纯有机室温近红外磷光材料的模块化设计提供了一条便捷的途径。
更新日期：2022-04-23
中文翻译：
用于细胞成像的二芳基乙烯苯基吡啶衍生物和葫芦[8]脲的近红外磷光开关
近红外（NIR）纯有机室温磷光（RTP）材料因其在高分辨率生物成像和发光材料领域的广泛应用而受到越来越多的研究关注。在这项工作中，作者报道了一种由二芳基乙烯苯基吡啶鎓衍生物（DTE-TP）和葫芦[8]脲（CB[8]）构成的大环限域纯有机RTP超分子组装体。与 CB[6] 和 CB[7] 相比，CB[8] 的较大空腔诱导分子折叠并增强分子内电荷转移相互作用，从而导致所获得的组件在 700 nm 处发射有效的近红外磷光。由于二芳基乙烯核心的光致变色，近红外磷光通过波长为 365 和 >600 nm 的光照射可逆地调节。此外，基于细胞的实验表明，这种超分子组装体位于溶酶体中，并在 650-750 nm 处显示 NIR 磷光。此外，通过磷光共振能量转移，获得的组件在 817 nm 处呈现红移近红外发射。这种超分子磷光开关为水溶性纯有机室温近红外磷光材料的模块化设计提供了一条便捷的途径。
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