当前位置：
X-MOL 学术
›
Anal. Chem.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Double-Fluorescent Response Spiropyran-Functionalized Graphitic Carbon Nitride Solvent Decoder and Nanofiber Mat-Based Visual Colorimetric Sensor for Humidity Detection within Grain Heaps
Analytical Chemistry ( IF 6.7 ) Pub Date : 2024-09-10 , DOI: 10.1021/acs.analchem.4c02523 Huayin Zhang 1 , Lanjing Wang 1 , Qixun Nian 1 , Shiwen Liu 1 , Jingjing Li 2 , Qian Xu 1
Analytical Chemistry ( IF 6.7 ) Pub Date : 2024-09-10 , DOI: 10.1021/acs.analchem.4c02523 Huayin Zhang 1 , Lanjing Wang 1 , Qixun Nian 1 , Shiwen Liu 1 , Jingjing Li 2 , Qian Xu 1
Affiliation
|
Spiropyran-functionalized graphitic carbon nitride (MCH@g-C3N4) in acidic conditions was prepared for the first time. MCH@g-C3N4 exhibited dual-wavelength fluorescence emission with two distant bands and distinct solvatochromic behavior owing to the different molecular structures of spiropyran. A three-dimensional organic solvent decoder was fabricated for solvent identification based on the emission wavelength and fluorescence quantum yield of MCH@g-C3N4 in different polar solvents. The ratiometric fluorescence sensing of the water content in organic solvent was realized using water to induce the structural change of spiropyran. A solid-phase MCH@g-C3N4/polyvinylpyrrolidone (PVP) nanofiber mat-based sensor was prepared via cospinning MCH@g-C3N4 with hydrophilic PVP. A fluorescent humidity sensor was fabricated using a commercial syringe equipped with a stainless-steel needle (catcher) to obtain the air inside the grain heap, which enabled the accurate location of the sampling spot. The space between the syringe and piston was used as an enclosed sensing space. Thus, a simple, accurate, and intuitive visual colorimetric method for the internal humidity of a grain heap was realized by analyzing the recorded images.
中文翻译：
双荧光响应螺吡喃功能化石墨碳氮化物溶剂解码器和基于纳米纤维垫的视觉比色传感器，用于谷物堆内的湿度检测
首次在酸性条件下制备了螺吡喃功能化石墨氮化碳(MCH@gC 3 N 4 )。由于螺吡喃分子结构的不同，MCH@gC 3 N 4表现出具有两个遥远谱带的双波长荧光发射和独特的溶剂化显色行为。根据MCH@gC 3 N 4在不同极性溶剂中的发射波长和荧光量子产率，构建了三维有机溶剂解码器，用于溶剂识别。利用水诱导螺吡喃的结构变化实现了有机溶剂中水含量的比率荧光传感。通过MCH@gC 3 N 4与亲水性PVP共纺制备了固相MCH@gC 3 N 4 /聚乙烯吡咯烷酮(PVP)纳米纤维垫传感器。使用配备不锈钢针（捕捉器）的商用注射器制作荧光湿度传感器，以获取粮堆内的空气，从而实现采样点的准确定位。注射器和活塞之间的空间用作封闭的传感空间。因此，通过分析记录的图像，实现了一种简单、准确、直观的粮堆内部湿度视觉比色方法。
更新日期：2024-09-10
中文翻译：
双荧光响应螺吡喃功能化石墨碳氮化物溶剂解码器和基于纳米纤维垫的视觉比色传感器，用于谷物堆内的湿度检测
首次在酸性条件下制备了螺吡喃功能化石墨氮化碳(MCH@gC 3 N 4 )。由于螺吡喃分子结构的不同，MCH@gC 3 N 4表现出具有两个遥远谱带的双波长荧光发射和独特的溶剂化显色行为。根据MCH@gC 3 N 4在不同极性溶剂中的发射波长和荧光量子产率，构建了三维有机溶剂解码器，用于溶剂识别。利用水诱导螺吡喃的结构变化实现了有机溶剂中水含量的比率荧光传感。通过MCH@gC 3 N 4与亲水性PVP共纺制备了固相MCH@gC 3 N 4 /聚乙烯吡咯烷酮(PVP)纳米纤维垫传感器。使用配备不锈钢针（捕捉器）的商用注射器制作荧光湿度传感器，以获取粮堆内的空气，从而实现采样点的准确定位。注射器和活塞之间的空间用作封闭的传感空间。因此，通过分析记录的图像，实现了一种简单、准确、直观的粮堆内部湿度视觉比色方法。
京公网安备 11010802027423号