摘要
自制杯[4]芳烃经多步反应得双氨基(化合物3,4)及双甲酰基(化合物5)杯[4]芳烃衍生物,通过氨基与甲酰基的缩合反应,获得两个新双杯[4]芳烃偶联化合物6、7,^(1)H NMR,^(13)CNMR、FT-IR和MS(Maldi-tof)表征结构。用紫外光谱(UV)初步研究化合物6、7与11种金属离子的作用。结果表明,pH 1~12时,化合物6的UV不受影响,而化合物7的UV在pH>10时出现明显变化;化合物6、7与11种金属离子作用后,其UV在最大吸收(λ_(max))处的吸收强度都明显降低。此外,化合物7与Cd^(2+)等9种金属离子作用后,λ_(max)还红移了15~20 nm。研究还表明,浓度高于0.2 mmol/L时,Cd^(2+)才会使化合物7的UVλ_(max)红移。
The calix[4]arene derivatives with bi-amidogen groups(compound 3 and 4)and bi-formyl groups(compound 5)were obtained through multiple steps reactions using self-made calix[4]arene as a starting material.Then,two new dicalix[4]arene derivatives compound 6 and 7 were synthesized by condensation reaction between amidogen groups and formyl groups.^(1)H NMR,^(13)C NMR,FT-IR and MS(Maldi-tof)characterized their structures.The interactions between compound 6 and 7 with eleven kinds of metal ions,respectively,were studied preliminarily using ultraviolet spectrophotometry.Results showed that over the range of pH 1~12,no effect of pH on ultraviolet absorption spectrum(UV)for compound 6 was found,but apparent UV changes for compound 7 appeared when pH rose to higher than pH 10.All absorption intensity at absorption maximum wavelength(λ_(max))declined obviously after compound 6 and 7 interacted with these studied metal ions.Besides,λ_(max) occurred a red shift of 15~20 nm after compound 7 interacted with 9 kinds of metal ions like Cd^(2+).In addition,only when the concentration of Cd^(2+)was over 0.2 mmol·L-1 could the red shift ofλ_(max) for compound 7 occur.
作者
汤伟强
周俊生
张晓梅
TANG Wei-qiang;ZHOU Jun-sheng;ZHANG Xiao-mei(School of Chemical Engineering,Anhui University of Science and Technology,Huainan 232001,China)
出处
《安徽化工》
CAS
2021年第4期52-57,共6页
Anhui Chemical Industry
关键词
芳烃偶联物
合成
金属离子
相互作用
dicalix[4]arene derivatives
synthesis
metal ion
interaction
