Mu Xiaowei, Song Xiaona, Gao Dejiang, Ma Pinyi, Wu Qiong, Song Daqian
Jilin Province Research Center for Engineering and Technology of Spectral Analytical Instruments, College of Chemistry, Jilin University, Qianjin Street 2699, Changchun 130012, China.
Changchun Dirui Medical Company Ltd., Changchun 130012, China.
Spectrochim Acta A Mol Biomol Spectrosc. 2022 Aug 5;276:121195. doi: 10.1016/j.saa.2022.121195. Epub 2022 Mar 26.
Herein, a novel type of red-emitting carbon dots called TN-CDs was created via a one-step hydrothermal approach using neutral red and tartaric acid as raw materials. The fluorescence of TN-CDs was gradually quenched as the amount of water increased, and the color of the solution changed from yellow to pink mauve (or purple to pink). The reaction could be completed within only 5 s in various organic solvents such as N,N-Dimethylformamide (DMF), methanol (MeOH), acetonitrile (ACN), and ethanol (EtOH) with linear detection ranges of 1.2%-35.0%, 0.5%-20.0%, 0.25%-5.0% and 0%-16.0%, respectively. In addition, we prepared a reusable test strip and then combined it with TN-CDs to detect water content in DMF, as well as integrated it with smartphone software, a UV lamp, and a dark chamber for real-time, on-site, visual quantitative detection of the water content.
在此，以中性红和酒石酸为原料，通过一步水热法制备了一种新型的红色发光碳点，即TN-CDs。随着水量的增加，TN-CDs的荧光逐渐猝灭，溶液颜色从黄色变为粉紫红色（或从紫色变为粉红色）。该反应在N，N-二甲基甲酰胺（DMF）、甲醇（MeOH）、乙腈（ACN）和乙醇（EtOH）等各种有机溶剂中仅需5秒即可完成，线性检测范围分别为1.2%-35.0%、0.5%-20.0%、0.25%-5.0%和0%-16.0%。此外，我们制备了一种可重复使用的试纸条，然后将其与TN-CDs结合以检测DMF中的水分含量，并将其与智能手机软件、紫外灯和暗室集成，用于实时、现场、可视化定量检测水分含量。
