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以4-正丁基苯胺、1,2-二溴乙烷、苯酚为原料,通过威廉姆森成醚反应与氨基化反应合成了阳离子表面活性剂——4-丁基偶氮苯-4’-(乙氧基)-三甲基溴化铵(AZTMA),化合物结构经1HNMR进行了确证,结果表明,合成物质即为目标产物。通过紫外-可见分光光度计全波长扫描考察了AZTMA的光可逆特性,证明其能在(360±5)nm紫外光以及≥420 nm可见光光照下发生顺反异构转变。反式AZTMA溶液在紫外光的照射下达到异构平衡的时间为50 min;顺式AZTMA在可见光照射下90 min达到平衡。采用铂金板法测定了30℃下AZTMA的反式与顺式结构的临界胶束浓度(CMC)分别为2.0 mmol/L和6.0 mmol/L,结果表明,AZTMA胶束的形成与解散具备可逆调控的特性。
Using 4-n-butylaniline, 1,2-dibromoethane and phenol as raw materials, a cationic surfactant, 4-butylazobenzene-4 ’ - (ethoxy) -trimethylammonium bromide (AZTMA). The structure of the compound was confirmed by 1HNMR. The results showed that the synthesized product was the target product. The reversible photocatalytic properties of AZTMA were investigated by UV-visible spectrophotometer. The results show that cis-trans isomerization of AZTMA can occur under (360 ± 5) nm UV light and> 420 nm visible light. The trans-AZTMA solution achieved isomerization equilibrium under ultraviolet light for 50 min and cis-AZTMA reached equilibrium at 90 min under visible light irradiation. The critical micelle concentration (CMC) of the trans and cis structures of AZTMA at 30 ℃ was 2.0 mmol / L and 6.0 mmol / L, respectively. The results show that the formation and dissolution of AZTMA micelles have reversible regulation Features.