用一维^1H NMR、^13C NMR方法研究了以N,N'-己二撑-1,6-双苯偏三酸酰亚胺二酸(IA6)、6-羟基-2-萘甲酸(HNA)和4,4'-二羟基二苯酮(DHBP)为单体的一种液晶聚酯酰亚胺三元共聚物的结构,并通过DEPT(无畸变极化转移增益法)、^1H-^1H COSY(氢-氢化学位移相关谱)、HMQC(异核多量子相关谱)、HMBC(异核多键相关谱)进一步确定了该类共聚物的^1H谱和^13C谱中各谱峰的归属,为研究热致性液晶聚酯酰亚胺共聚物的链结构和链序列提供了有价值的结构分析数据.
The chemical structures of a liquid crystalline copoly (ester imide) (PEI) derived from N, N'- hexane-1,6-diylbis ( trimellitimide ), 4, 4'-dihydroxybenzophenone and 6-hydroxy, 2-naphthoic acid (HNA) were studied by 1D ^1H and ^13C NMR. Detailed assignment of ^1H and ^13C spectra were further confirmed by 2D NMR techniques(^1H-^1H COSY, HMQC and HMBC). The structure data obtained are valuable for the study of the chain structure and chain sequence of the liquid crystalline copoly( ester imide) s.