Fluorescent quinazolinones were synthesized form ethyl 2-methyl-4-oxo-3,4-dihydroquinazoline −5-carboxylate intermediate. The photophysical properties of the compounds were evaluated in DMF solvent. The experimental absorption and emission of the compounds were compared with the vertical excitation and emission obtained Density Functional Theory (DFT) and Time Dependent Density Functional Theory (TD-DFT) computation. Application of the fluorescent compounds as a fluorescent brightening agent was tested on polyester fiber. Changes in the electronic transition, energy levels, and orbital diagrams of quinazolin-4(3H)-one analogues were investigated using the DFT computations and were correlated with the experimental spectral data. The experimental absorption and emission wavelengths are in good agreement with those predicted using the DFT and TD-DFT.
荧光
喹唑啉酮由 2-甲基-4-氧代-3,4-二氢
喹唑啉-5-
甲酸乙酯中间体合成。在
DMF 溶剂中对这些化合物的光物理特性进行了评估。化合物的实验吸收和发射与密度泛函理论(DFT)和时变密度泛函理论(TD-DFT)计算得出的垂直激发和发射进行了比较。在聚酯纤维上测试了荧光化合物作为
荧光增白剂的应用。利用 DFT 计算研究了
喹唑啉-4(3H)-
酮类似物的电子转变、能级和轨道图的变化,并将其与实验光谱数据进行了关联。实验吸收和发射波长与使用 DFT 和 TD-DFT 预测的波长非常一致。