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研究了二甲氨基苄叉亚胺类化合物溶液的电子光谱。结果表明一端为电子给体另一端为电子受体的共轭型取代苄叉对硝基苯胺3,在基态下发生了分子内电荷转移,其跃迁吸收波长比化合物1,2(315 nm)红移90 nm。以乙撑基联接的非共轭型苄叉亚胺奥化合物4,5,6未观察到基态时的电荷转移现象,但在激发条件下可明显的发生分子内的电荷转移而使荧光强度大大减弱。MMA等对1的荧光有明显的猝灭作用,表明其间发生了电荷转移。丙烯酸则因会引起西佛碱的水解,而使荧光减弱。
The electron spectra of dimethylazylideneamino compounds were studied. The results showed that the conjugate substituted benzylidene p-nitroaniline 3 with one end of the electron donor as the electron acceptor had an intramolecular charge transfer in the ground state and the transition absorption wavelength was shorter than that of the 1,2 (315 nm) Move 90 nm. Unconjugated benzylideneamino compounds 4,5,6 with ethylene group were not observed in the ground state charge transfer phenomenon, but under the excitation conditions can significantly occur within the molecular charge transfer so that the fluorescence intensity greatly Weakened. MMA and other fluorescence on the 1 significant quenching, indicating that during the charge transfer occurred. Acrylic acid is due to the hydrolysis of schiff base, leaving the fluorescence weakened.