Comparison of ESI, APCI and MALDI for the (tandem) mass analysis of poly(2-ethyl-2-oxazoline)s with various end-groups
Comparison of ESI, APCI and MALDI for the (tandem) mass analysis of poly(2-ethyl-2-oxazoline)s with various end-groups
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DOI：
10.1016/j.eurpolymj.2013.02.008
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发表时间：
2013-08-01
影响因子：
6
通讯作者：
Schubert, Ulrich S.
中科院分区：
文献类型：
--
作者：
Atuntas, Esra;Weber, Christine;Schubert, Ulrich S.
采用电喷雾电离质谱（ESI-MS）、大气压化学电离质谱（APCI-MS）和基质辅助激光解吸电离质谱（MALDI-MS）对一系列不同端基的聚（2-乙基-2-恶唑啉）（PEtOxs）进行了分析。在一个系统的比较研究中，三个软电离方法（ESI，APCI和MALDI）被用来研究PEtOx的分子组成，摩尔质量（M-n和M-w）和多分散指数（PDI）值。此外，通过串联质谱实验进行了详细的表征，以获得有关这些聚合物及其碎片模式的进一步结构信息。研究了这种聚合物类型的端基对碎片模式的影响。此外，通过一个特殊的软件串联MS数据的成功解释，显示了这种类型的聚合物，以开辟这一领域的聚合物科学家谁也不是MS专家。从这项工作中获得的见解将有助于在未来广泛的合成聚合物类的结构阐明。(C)2013爱思唯尔有限公司保留所有权利。
A series of poly(2-ethyl-2-oxazoline) (PEtOxs) with various end-groups were analyzed by different mass spectrometry (MS) techniques (electrospray ionization mass spectrometry (ESI-MS), atmospheric pressure chemical ionization mass spectrometry (APCI-MS) and matrix-assisted laser desorption ionization mass spectrometry (MALDI-MS)). In a systematic comparison study the three soft ionization methods (ESI, APCI and MALDI) were exploited to investigate the PEtOxs with regard to their molecular composition, molar masses (M-n and M-w) and polydispersity index (PDI) values. In addition, a detailed characterization via tandem mass spectrometry experiments was performed to gain further structural information about these polymers and their fragmentation patterns. The effect of the end-groups on the fragmentation patterns was investigated for this polymer type. Additionally, the successful interpretation of tandem MS data via a special software was shown for this type of polymer in order to open up this field also for polymer scientists who are not MS-specialists. The insights gained from this work will assist the structural elucidation of a broad range of synthetic polymer classes in the future. (C) 2013 Elsevier Ltd. All rights reserved.