Self-assembly of Pillar[5]arene and phenazine enables FRET-based VOCs detection

IF 4.7 3区化学 Q2 CHEMISTRY, PHYSICAL

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2025-09-25 DOI:10.1016/j.jphotochem.2025.116807

Guo-Yan Liang, Shao-Ping Tao, Bing-Bing Shi, Qi Lin, Jin-Fa Chen, Tai-Bao Wei

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引用次数: 0

Abstract

With Pyridine (Py) and Tetrahydrofuran (THF) being listed as class 2B carcinogens by the World Health Organization, and considering their extensive use as volatile organic solvents (VOCs), detection of Py and THF is critically important. This study introduced a novel sensing platform CP[5]A@G based on Förster resonance energy transfer (FRET) system to successfully realized the detection of these two toxic gasses. The sensing platform CP[5]A@G was developed through supramolecular self-assembly between the coumarin-modified pillar[5]arene (CP[5]A) and phenazine derivative (G). In which, the CP[5]A acted as host molecule and energy donor, accordingly, the G acted as the guest molecule and energy acceptor. This platform CP[5]A@G exhibited significant aggregation-caused quenching (ACQ) effects in chloroform and n-hexane mixed solvent. Generally speaking, ACQ effect is untoward for luminescence properties of organic compounds and is more severe in the solid state. However, based on the ACQ property of platform CP[5]A@G, we have realized the detection of Py and THF in solvent and film states through the host-guest competitive assembly and lone pair···π interaction mechanisms. The responses were manifested in the opening and quenching effects on the fluorescence luminescence. These findings represent substantial advancements in the adsorption of Py and THF, with promising applications in commercial gas recognition systems and sensor design.

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柱[5]芳烃和非那嗪的自组装使基于fret的VOCs检测成为可能

吡啶（Py）和四氢呋喃（THF）被世界卫生组织列为2B类致癌物，作为挥发性有机溶剂（VOCs）被广泛使用，Py和THF的检测至关重要。本研究引入了一种基于Förster共振能量传递（FRET）系统的新型传感平台CP[5]A@G，成功实现了对这两种有毒气体的检测。通过香豆素修饰柱[5]芳烃（CP[5]A）与非那嗪衍生物(G)的超分子自组装，构建了传感平台CP[5]A@G。其中，CP[5]A作为宿主分子和能量供体，G作为客体分子和能量受体。该平台CP[5]A@G在氯仿和正己烷混合溶剂中表现出明显的聚集猝灭（ACQ）效应。一般来说，ACQ效应对有机化合物的发光性能不利，在固体状态下更为严重。然而，基于平台CP[5]A@G的ACQ特性，我们通过主客竞争组装和孤对···π相互作用机制实现了溶剂态和膜态Py和THF的检测。这种响应表现为对荧光发光的开启和猝灭效应。这些发现代表了Py和THF吸附的实质性进展，在商业气体识别系统和传感器设计中具有广阔的应用前景。

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来源期刊

Journal of Photochemistry and Photobiology A-chemistry 化学-物理化学

CiteScore

7.90

自引率

7.00%

发文量

580

审稿时长

48 days

期刊介绍： JPPA publishes the results of fundamental studies on all aspects of chemical phenomena induced by interactions between light and molecules/matter of all kinds. All systems capable of being described at the molecular or integrated multimolecular level are appropriate for the journal. This includes all molecular chemical species as well as biomolecular, supramolecular, polymer and other macromolecular systems, as well as solid state photochemistry. In addition, the journal publishes studies of semiconductor and other photoactive organic and inorganic materials, photocatalysis (organic, inorganic, supramolecular and superconductor). The scope includes condensed and gas phase photochemistry, as well as synchrotron radiation chemistry. A broad range of processes and techniques in photochemistry are covered such as light induced energy, electron and proton transfer; nonlinear photochemical behavior; mechanistic investigation of photochemical reactions and identification of the products of photochemical reactions; quantum yield determinations and measurements of rate constants for primary and secondary photochemical processes; steady-state and time-resolved emission, ultrafast spectroscopic methods, single molecule spectroscopy, time resolved X-ray diffraction, luminescence microscopy, and scattering spectroscopy applied to photochemistry. Papers in emerging and applied areas such as luminescent sensors, electroluminescence, solar energy conversion, atmospheric photochemistry, environmental remediation, and related photocatalytic chemistry are also welcome.