【摘要】 利用紫外 -可见吸收光谱和荧光光谱 ,研究了双巴比妥酸衍生物的结构与性质关系 .结果表明 ,对于D -π -A结构的巴比妥酸分子 ,最大吸收波长λmax是分子内电荷转移所致 .该化合物有二个发光带 ,其发光机制各不相同 ,第一个发光带 (390nm)为n -π 跃迁引起的 ,第二个发光带是由于分子内电荷转移所造成的更多还原

【Abstract】 The spectra of UV vis absorption and fluorescene were used to study the structure spectra relationship of the derivatives of bibarbituric acid. The results of UV vis absorption spectrum showed:as barbituric acid with pull draw electron group, the reason which caused λ max was the transition of the intramolecular charge transfer. They had two luminescent bands. The reasons for these luminescent bands were n π * transition and intramolecular charge transfer respectively.更多还原