Electrospray Ionization Mass Spectral Characteristics of Polyamide Containing 1,4,7,10-Tetraazacyclododecane  

作　　者：乔仁忠 张祯 巨勇 夏传琴 余孝其 赵玉芬 

机构地区：[1]The Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, China [2]Department of Pharmaceutical Engineering, Beijing University of Chemical Technology, Beijing 100029, China [3]Department of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China

出　　处：《Chinese Journal of Chemistry》2006年第7期923-928,共6页中国化学（英文版）

基　　金：Project supported by the National Natural Science Foundation of China （Nos. 20132020, 20572008）

摘　　要：The study of the fragmentations of the protonated molecular species [M＋H]^＋ and selected fragment ions allowed proposals for the main fragmentation pathways of the title compound. In order to better understand the fragmentation pathways, the MS3 and MS4 spectra of the title compound were obtained. The main fragmentation pathways occur by the cleavage of the C-CO bonds between N-methylpyrrole and carbonyl groups, CO-NH amide bonds, NH-C bonds between the NH groups and the N-methylpyrrole rings, and N-C bonds in 1,4,7,10-tetraazacyclododecane. Electrospray ionization was proven to be a good method for the structural characterization and identification of this kind of compound.The study of the fragmentations of the protonated molecular species [M＋H]^＋ and selected fragment ions allowed proposals for the main fragmentation pathways of the title compound. In order to better understand the fragmentation pathways, the MS3 and MS4 spectra of the title compound were obtained. The main fragmentation pathways occur by the cleavage of the C-CO bonds between N-methylpyrrole and carbonyl groups, CO-NH amide bonds, NH-C bonds between the NH groups and the N-methylpyrrole rings, and N-C bonds in 1,4,7,10-tetraazacyclododecane. Electrospray ionization was proven to be a good method for the structural characterization and identification of this kind of compound.

关 键 词：POLYAMIDE 1 4 7 10-TETRAAZACYCLODODECANE mass spectrometry 

分 类 号：O633.22[理学—高分子化学]