MALDI-TOF质谱表征芳香环状聚酮低聚物及其组分分布

摘要

应用基质辅助激光解吸电离飞行时间质谱(MALDI-TOF MS),以1,8,9-蒽三酚为基质,无阳离子添加剂,对两种芳香环状聚酮低聚物的结构进行了确认,并研究了环状齐聚物不同聚合度组分的分布规律.实验结果表明,MALDI-TOF质谱是分析环状聚酮低聚物准确、快速的工具,芳香环状聚酮低聚物组分分布可以用缩聚高分子环化理论(Jacoson-Stockmayer Theory)进行解释.%The structure and the distribution of two kinds of cyclic(arylene ketone) oligomers were successfully characterized by matrix - assisted laser desorption ionization time - of - flight mass spectrometry (MALDI TOF MS) technique.The results indicated that MALDI-TOF MS was a rapid and accurate means to analyze cyclic (arylene ketone) oligomers and the distribution of cyclic(arylene ketone) oligomers could be accorded with Jacoson - Stockmayer theory well.