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| Synthesis and Photoisomerization Behavior of Azobenzene Compounds Containing Various Groups |
| LIU Jia, TIAN Jin-tao |
| Institute of Materials Science and Engineering, Ocean University of China, Qingdao 266100, China |
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Abstract Four kinds of azobenzene compounds(1~4) containing nitro, amino, and different number of azo groups were synthesized by diazo coupling reaction from aniline or 4-nitroaniline. The structures were confirmed by 1H NMR and FT-IR. The UV-Vis spectra of 1~4 under UV irradiation were investigated. The results showed that the photoisomerization rate of the compounds linked with electron-donating group(NH2) was faster than those linked with electron withdrawing group(NO2). The photoisomerization was therefore restrained by NO2. The cis/trans isomerization process was also affected by the number of azo couples.
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Received: 17 March 2015
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2016, Vol. 24 
