Synthesis and Optical Properties of 4,4′-Diethynylazobenzene

Abstract

Abstract: 4,4'-diethynylazobenzene was systhesized from coupling reaction of aniline,and every product was characterized by 1H NMR.The 1H NMR analysis showed that the aim product was synthesized successfully,and the total yield reached 85%.UV spectrum showed benzene ring π-π * absorption at 243 nm wavelength,and at 350 nm and 420 nm showed the characteristic absorption peak of trans-and cis-azobenzene respectively.UV spectra showed that 4,4'-diethynylazobenzene chloroform solution at different times of UV(365 nm) irradiation occurred cis-thans isomerism.

Key words: 4,4'-diethynylazobenzene, synthesis, optical properties

PENG Xiao-Chun, WU Jian-Hua, ZHANG Lin, YAN Wen-Bin, YIN Hong, CHEN Shang. Synthesis and Optical Properties of 4,4′-Diethynylazobenzene[J]. journal6, 2010, 31(3): 82-85.

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