Amphiphilicity-Controlled Polychromatic Emissive Supramolecular Self-Assemblies for Highly Sensitive and Efficient Artificial Light-Harvesting Systems,Small

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Amphiphilicity-Controlled Polychromatic Emissive Supramolecular Self-Assemblies for Highly Sensitive and Efficient Artificial Light-Harvesting Systems
Small ( IF 13.0 ) Pub Date : 2022-09-22 , DOI: 10.1002/smll.202204360
Xu-Man Chen ₁ , Ke-Wei Cao ₁ , Hari Krishna Bisoyi ₂ , Shu Zhang ₁ , Nina Qian ₁ , Lingxiang Guo ₁ , Dong-Sheng Guo ₃ , Hong Yang ₁ , Quan Li _{1,

2}

Affiliation

Dynamic sequential control of photoluminescence by supramolecular approaches has become a great issue in supramolecular chemistry. However, developing a systematic strategy to construct polychromatic photoluminescent supramolecular self-assemblies for improving the efficiency and sensitivity of artificial light-harvesting systems still remains a challenge. Here, a series of amphiphilicity-controlled supramolecular self-assemblies with polychromatic fluorescence based on lower-rim hexyl-modified sulfonatocalix[4]arene (SC4A6) and N-alkyl-modified p-phenylene divinylpyridiniums (PVPn, n = 2–7) as efficient light-harvesting platforms is reported. PVPn shows wide ranges of polychromatic fluorescence by co-assembling with SC4A6, whose emission trends significantly depend on the modified alkyl-chains of PVPn. The formed PVPn-SC4A6 co-assemblies as light-harvesting platforms are extremely sensitive for transferring the energy to two near-infrared emissive acceptors, Nile blue (NiB) and Rhodamine 800. After optimizing the amphiphilicity of PVPn-SC4A6 systems, the PVPn-SC4A6-NiB light-harvesting systems achieve an ultrasensitive working concentration for NiB (2 nm) and an ultrahigh antenna effect up to 91.0. Furthermore, the two different kinds of light-harvesting nanoparticles exhibit good performance on near-infrared imaging in the Golgi apparatus and mitochondria, respectively.

中文翻译：

用于高灵敏度和高效人工光收集系统的两亲性控制的多色发射超分子自组装

通过超分子方法动态顺序控制光致发光已成为超分子化学中的一个重要问题。然而，开发一种系统的策略来构建多色光致发光超分子自组装以提高人工光捕获系统的效率和灵敏度仍然是一个挑战。在这里，一系列基于下缘己基修饰的磺酸根[4]芳烃（SC4A6）和N-烷基修饰的对亚苯基二乙烯基吡啶（PVPn，n = 2–7) 作为高效的光捕获平台被报道。PVPn 通过与 SC4A6 共组装显示出广泛的多色荧光，其发射趋势显着取决于 PVPn 的改性烷基链。形成的 PVPn-SC4A6 联合组件作为光捕获平台对将能量转移到两个近红外发射受体尼罗蓝 (NiB) 和罗丹明 800 极为敏感。在优化 PVPn-SC4A6 系统的两亲性后，PVPn- SC4A6-NiB 光捕获系统实现了 NiB 的超灵敏工作浓度（2 nm ）和高达 91.0 的超高天线效应。此外，两种不同类型的光捕获纳米粒子分别在高尔基体和线粒体的近红外成像中表现出良好的性能。

更新日期：2022-09-22

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