(2S)-5-(3-Methyl-2-phthalimidylpentanoylamino)isophthalic acid (1), (2S)-5-(2-Phthalimidiylpropanoylamino)
isophthalic acid, and (2S)-5-(3-phenyl-2-phthalimidylpropanoylamino)isophthalic acid were prepared from phthalic anhydride,
5-aminoisophthalic acid and the corresponding L-amino acids in acetic acid. The interfacial polycondensation of the
corresponding diacid chlorides with two aromatic diazo containing diols such as 4,4’-[4,4’-diphenyl sulfonedi-diazene-
2,1-diyl] bis (phenol) and 4,4’-[4,4’-diphenyl etherdi-diazene-2,1-diyl] bis(phenol) were carried out at room temperature.
Six novel optically active poly (azo-ester)s (PAE)s including phthalimide groups were obtained with good yields and inherent
viscosities of 0.12-0.25 dLg-1. The new (PAE)s are readily soluble in organic solvents. The resulting polymers were
characterized by specific rotation, FT-IR and 1H NMR spectroscopy, elemental analysis and thermo gravimetric analysis
(TGA).
(2S)-5-(3-Methyl-2-Phthalimidylpentanoylamino)isophthalic acid (1)、(2S)-5-(2-Phthalimidylpropanoylamino)isophthalic acid 和 (2S)-5-(3-phenyl-2-Phthalimidylpropanoylamino)isophthalic acid 由
邻苯二甲酸酐、
5-氨基间苯二甲酸和相应的 L-
氨基酸在
乙酸中制备而成。在室温下,相应的二酸
氯化物与 4,4'-[4,4'-diphenyl sulfonedi-diazene- 2,1-diyl] bis (phenol) 和 4,4'-[4,4'-diphenyl etherdi-diazene-2,1-diyl] bis (phenol) 等两种含芳香族重氮的二元醇进行了界面缩聚。
获得了六种新型光学活性聚(偶氮酯)(PAE),其中包括邻苯二甲
酰亚胺基团,产率高,固有粘度为 0.12-0.25 dLg-1。这种新型 (PAE) 很容易溶于有机溶剂。通过比旋、傅立叶变换红外光谱、1H NMR 光谱、元素分析和热重分析 (TGA) 对所得到的聚合物进行了表征。