Novel acid mono azo dye compound: Synthesis, characterization, vibrational, optical and theoretical investigations of 2-[(E)-(8-hydroxyquinolin-5-yl)-diazenyl]-4,5-dimethoxybenzoic acid
作者:Mustafa Saçmacı、Hatice Kanbur Çavuş、Hatice Arı、Recep Şahingöz、Talat Özpozan
DOI:10.1016/j.saa.2012.05.068
日期:2012.11
tautomeric structure of the compound. Natural Bond Orbital (NBO) analysis was performed to investigate intramolecular interactions. The vibrational spectral data obtained from solid phase IR & Raman spectra were assigned based on the results of the theoretical calculations. UV–vis spectroscopic technique was employed to obtain the optical band gap of HQD. The analysis of the optical absorption data revealed
通过偶合2-氨基-4,5-重氮盐溶液合成了新型酸性单偶氮染料2-[((E)-(8-羟基喹啉-5基)-二氮烯基] -4,5-二甲氧基苯甲酸(HQD)。二甲氧基苯甲酸(DMA)与8-羟基喹啉(HQ)。该染料的特点是紫外可见,红外和拉曼,1 H和13C NMR光谱技术和元素分析。还执行了HQD的法向坐标分析,以分配振动谱中的每个频带。使用DFT(B3LYP和B3PW91)计算来优化几何结构,解释NMR光谱,计算并确定化合物的稳定互变异构结构。进行自然键轨道(NBO)分析以研究分子内相互作用。根据理论计算结果分配从固相IR和拉曼光谱获得的振动光谱数据。紫外可见光谱技术用于获得HQD的光学带隙。对光吸收数据的分析揭示了在光学带隙中存在直接和间接跃迁。已发现HQD的光学带隙为1.95和1。