Synthesis, characterization and theoretical study of new hetarylazopyrazolone dyes and investigation of their absorption spectra
作者:Ebru Aktan、Nermin Ertan、Tahsin Uyar
DOI:10.1016/j.molstruc.2013.12.015
日期:2014.2
Additionally, acid–base, concentration, temperature and substituent effects on the visible absorbtion spectra were also examined. The ground-state geometry of the synthesized compounds were studied by using density functional theory (DFT) calculations at the B3LYP/6-31+G(d) level of theory. The absorption spectra of the dyes are obtained by using time-dependent density functional theory (TD-DFT) method associated
摘要 通过在亚硝酰基硫酸中制备的6种杂环胺与1-(2-苯并噻唑基)-3-甲基吡唑-5-one偶联合成了一系列杂芳基并吡唑啉酮染料。通过光谱方法和元素分析表征染料。在各种溶剂中研究了染料的溶剂化变色性能。此外,还检查了酸碱、浓度、温度和取代基对可见吸收光谱的影响。通过在 B3LYP/6-31+G(d) 理论水平上使用密度泛函理论 (DFT) 计算来研究合成化合物的基态几何形状。染料的吸收光谱是通过使用与积分方程形式化极化连续模型 (IEFPCM) 相关的时间相关密度泛函理论 (TD-DFT) 方法获得的。1-(2-benzothiazolyl)-3-methyl-4-(2-thiazolylazo)pyrazol-5-one 的互变异构已经通过 B3LYP/6-31+G(d) 方法进行了检测。通过与实验值的比较来评估计算的吸收最大值。