A fluorescent film sensor based on a perylene bisimide (PBI)-functionalized copolymer for the fast and selective detection of aniline vapor has been fabricated. In this work, the common H-aggregation of the PBI units was obviously hindered by using numerous hydroxy-ethyl side chains as a spatial scaffold. Sensing performance studies demonstrated that the fluorescence of the film was instantaneously quenched by ppb-level volatile amines with excellent reversibility and reproducibility. The response time for aniline vapor was found to be less than 1 s. The high surface area and porosity of the silica gel substrate and hydrogen bonding interactions may assist the high sensitivity and fast response of the film towards aniline. Furthermore, the massive amount of fluorescence intensity data of the sensing film when exposed to low concentrations and a continuous flow of amine vapors were collected in a home-made sensing platform. In addition, the response feature investigates using the kinetic sorption and desorption information shows the promising potential of the film in real applications. This work has expanded the applications of PBI-based materials in the fluorescent sensing of toxic compounds, particularly amine vapors.

中文翻译：

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基于per双酰亚胺功能化共聚物的荧光膜检测气态胺†

已经制造了一种基于a双酰亚胺（PBI）-官能化共聚物的荧光膜传感器，用于快速，选择性地检测苯胺蒸气。在这项工作中，通过使用大量的羟乙基侧链作为空间支架，显然阻碍了PBI单元的常见H聚集。传感性能研究表明，薄膜的荧光被ppb级挥发性胺瞬间淬灭，具有出色的可逆性和可再现性。发现苯胺蒸气的响应时间小于1 s。硅胶基材的高表面积和孔隙率以及氢键相互作用可以帮助薄膜对苯胺的高灵敏度和快速响应。此外，在自制的传感平台上收集了大量的低浓度传感膜荧光强度数据和连续不断的胺蒸气流。此外，利用动力学吸附和解吸信息研究的响应特征表明，该膜在实际应用中具有广阔的发展潜力。这项工作扩大了基于PBI的材料在有毒化合物（尤其是胺蒸气）的荧光检测中的应用。