An aqueous light-harvesting system with two-step sequential energy transfer based on the self-assembled nanoarchitectonics of a neutral AIE amphiphile

IF 4 2区化学 Q2 CHEMISTRY, PHYSICAL Journal of Molecular Structure Pub Date : 2024-11-22 DOI:10.1016/j.molstruc.2024.140835

Lu Tang , Zhiying Wu , Rong Zeng , Qiaona Zhang , Qi Wang , Tangxin Xiao

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Abstract

The development of supramolecular light-harvesting systems (LHS) in aqueous media, by mimicking the sequential energy transfer observed in natural photosynthesis, is significant. In this study, we designed and synthesized a neutral bola-type amphiphile, denoted as M, which comprises a cyanostilbene (CS) core flanked by oligoethylene glycol (OEG) chains. The hydrophobic CS group serves as the AIE fluorophore, while the flexible, hydrophilic OEG chains impart amphiphilicity to M, enabling the formation of highly emissive nanoparticles in aqueous environments based on nanoarchitectonics. By co-assembling two types of dyes as energy acceptors, we constructed an LHS that efficiently funnels excitation energy from the nanoparticles to the final acceptor (RH6G) via the relay acceptor (SR101). This LHS exemplifies a straightforward construction strategy, exhibits excellent water solubility, and demonstrates eco-friendliness, thereby offering a promising approach for the development of next-generation luminescent materials.

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基于中性 AIE 两性离子自组装纳米结构的两步顺序能量转移水光收集系统

通过模拟自然光合作用中观察到的顺序能量转移，开发水介质中的超分子光收集系统（LHS）意义重大。在这项研究中，我们设计并合成了一种中性波拉型双亲化合物，命名为 M，它由氰基芪（CS）核心和两侧的低聚乙二醇（OEG）链组成。疏水的 CS 基团是 AIE 的荧光团，而柔性亲水的 OEG 链则赋予了 M 两亲性，使其能够在水环境中形成基于纳米结构的高发射性纳米粒子。通过共同组装两种染料作为能量接受体，我们构建了一种 LHS，它能通过中继接受体（SR101）有效地将激发能量从纳米粒子漏泄到最终接受体（RH6G）。这种 LHS 的构建策略简单明了，具有出色的水溶性，而且环保，为下一代发光材料的开发提供了一种前景广阔的方法。

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来源期刊

Journal of Molecular Structure 化学-物理化学

CiteScore

7.10

自引率

15.80%

发文量

2384

审稿时长

45 days

期刊介绍： The Journal of Molecular Structure is dedicated to the publication of full-length articles and review papers, providing important new structural information on all types of chemical species including: • Stable and unstable molecules in all types of environments (vapour, molecular beam, liquid, solution, liquid crystal, solid state, matrix-isolated, surface-absorbed etc.) • Chemical intermediates • Molecules in excited states • Biological molecules • Polymers. The methods used may include any combination of spectroscopic and non-spectroscopic techniques, for example: • Infrared spectroscopy (mid, far, near) • Raman spectroscopy and non-linear Raman methods (CARS, etc.) • Electronic absorption spectroscopy • Optical rotatory dispersion and circular dichroism • Fluorescence and phosphorescence techniques • Electron spectroscopies (PES, XPS), EXAFS, etc. • Microwave spectroscopy • Electron diffraction • NMR and ESR spectroscopies • Mössbauer spectroscopy • X-ray crystallography • Charge Density Analyses • Computational Studies (supplementing experimental methods) We encourage publications combining theoretical and experimental approaches. The structural insights gained by the studies should be correlated with the properties, activity and/ or reactivity of the molecule under investigation and the relevance of this molecule and its implications should be discussed.