烷氧基偶氮萘化合物的合成表征及光响应性能

以间苯二甲酸为原料,经多步反应合成了一种新型烷氧基偶氮萘化合物5-4-（十六烷氧基）-1-萘基偶氮]-1,3-苯二甲酸二乙酯。用FT-IR、1H NMR对其结构进行了表征。该化合物（3.24×10-5 mol/L四氢呋喃溶液）紫外光谱K带的最大吸收波长为406 nm,摩尔吸光系数ε为18 437 L/（mol﹒cm）。在365 nm紫外光照射下,该化合物发生反-顺异构化,光照6 min后达到光稳态,K带最大吸收波长蓝移至403 nm,将其置于暗室中,48 h后恢复到光照前状态。光稳态时偶氮发色团反-顺异构化转化效率R为42.4%,顺式异构体的比例Y为44.5%。

Synthesis,Characterization and Photoreponse of Alkoxy Azonaphthalene Compound

A novel alkoxy azonaphthalene compound 5-（4-hexadecyloxy-1-naphtholazo）-1,3-diethyl phthalate was synthesized through multistep reactions with isophthalic acid as raw material.Its structure was characterized by FT-IR,1 H NMR.The maximum absorption wavelength and the molar absorption coefficient of the compound（3.24×10-5 mol/L THF solution） were 406 nm and 18437 L/（mol？cm）,respectively.The compound took place trans-cis photoisomerization under 365 nm UV irradiation.The photostationary state was obtained after irradiation for 6 min,the maximum absorption wavelength（K band） of the compound was blue-shifted to 403 nm.It recovered original state after placing it in the dark for 48 h.In the photostationary state,the efficiency of trans-cis photoisomerization（R） and the content of cis-isomer（Y） of azo chromophore were 42.4% and 44.5%,respectively.