MALDI-TOF mass spectrometry of polymeric silsesquioxanes

被引：0

作者：

Wallace, W.E. ^{[1
]}

Guttman, C.M. ^{[1
]}

Antonucci, J.M. ^{[1
]}

机构：

[1] Polymers Division, Natl. Inst. of Std. and Technology, Mailstop 8541, 100 Bureau Drive, Gaithersburg, MD 20899-8541, United States

来源：

American Chemical Society, Polymer Preprints, Division of Polymer Chemistry | 2000年 / 41卷 / 01期

关键词：

Crosslinking - Hydrolysis - Mass spectrometry - Molecular structure - Monomers - Oligomers - Polycondensation - Synthesis (chemical);

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Matrix-assisted laser desorption ionization time-of-flight (MALDI-TOF) mass spectrometry was shown to be an effective method to determine the degree-of-intramolecular-condensation of polymeric silsesquioxanes. The nature of the organic R′ leaving group was found to have a significant effect on the degree-of-intramolecular-condensation. Differences in the hydrolysis rates of the two R′ groups provided a likely explanation for the effects observed. Broadly considered, these results point to a means to understand reactivity and gelation in silsesquioxanes and in condensation-reaction systems in general.

引用

页码：633 / 634