Preparation and Properties of Polyurethane@TPECNPy-2 Acidochromic Micro/Nanofibrous Membranes

IF 3 4区化学 Q2 CHEMISTRY, ANALYTICAL

Luminescence Pub Date : 2025-09-05 DOI:10.1002/bio.70309

Baoyu Huang, Fengyuan Lin, Jialing Chen, Wenyang Xie, Anqi Xu, Zixin Huang, Xintong Zu, Peihui Fang, Xi Liu, Gaoyi Xie, Chunping Ma

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Abstract

Acidochromic fluorescent membranes have garnered significant research interest owing to their potential in real-time environmental monitoring and smart sensing applications. However, the rational design of membranes to optimize their structure–property interplay for enhanced acidochromic performance remains further explored. Herein, we prepared various stimulus-responsive micro/nanofibrous membranes using electrospinning technology by incorporating a fluorescent small molecule (TPECNPy-2) with thermoplastic polyurethane (TPU) to obtain specific properties. The effects of varying the TPECNPy-2 content on the chemical–physical structure and acidochromic properties of the composite membranes were analyzed. The results indicated that the addition of TPECNPy-2 had no significant impact on the chemical structure, fiber morphology, or aggregation state of the composite membranes. Morphology assessment revealed that the fabricated TPECNPy-2/TPU composite membranes exhibited uniform fiber diameters of approximately 100 nm, demonstrating excellent spinnability and reproducibility, while FL analysis revealed that all composite fiber membranes exhibited reversible acidochromic behavior. Under acid vapor exposure, the maximum fluorescence emission wavelength shifted from 505–511 to 622–625 nm. After fumigation with triethylamine, the fluorescence emission returned to its initial state, and the membrane reverted to its original color under visible light.

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Polyurethane@TPECNPy-2酸致变色微/纳米纤维膜的制备及性能研究

酸致变色荧光膜由于其在实时环境监测和智能传感应用方面的潜力而获得了重大的研究兴趣。然而，合理设计膜以优化其结构-性能相互作用以增强酸致变色性能仍有待进一步探索。在此，我们利用静电纺丝技术，将荧光小分子（TPECNPy-2）与热塑性聚氨酯（TPU）结合，制备了各种刺激响应微/纳米纤维膜，以获得特定的性能。分析了不同TPECNPy-2含量对复合膜化学物理结构和酸致变色性能的影响。结果表明，TPECNPy-2的加入对复合膜的化学结构、纤维形态和聚集状态没有显著影响。形态学分析表明，制备的TPECNPy-2/TPU复合膜具有均匀的纤维直径，约为100 nm，具有良好的可纺性和可重复性，而FL分析表明，所有复合纤维膜都具有可逆的酸致变色行为。在酸蒸气照射下，最大荧光发射波长从505 ~ 511 nm转变为622 ~ 625 nm。经三乙胺熏蒸后，荧光发射恢复到初始状态，膜在可见光下恢复到原来的颜色。

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来源期刊

Luminescence 生物-生化与分子生物学

CiteScore

5.10

自引率

13.80%

发文量

248

审稿时长

3.5 months

期刊介绍： Luminescence provides a forum for the publication of original scientific papers, short communications, technical notes and reviews on fundamental and applied aspects of all forms of luminescence, including bioluminescence, chemiluminescence, electrochemiluminescence, sonoluminescence, triboluminescence, fluorescence, time-resolved fluorescence and phosphorescence. Luminescence publishes papers on assays and analytical methods, instrumentation, mechanistic and synthetic studies, basic biology and chemistry. Luminescence also publishes details of forthcoming meetings, information on new products, and book reviews. A special feature of the Journal is surveys of the recent literature on selected topics in luminescence.