Исследование смеси олигомерных силсесквиоксанов методами гельпроникающей хроматографии и матричной лазерно-активированной десорбционно/ионизационной масс-спектрометрии
The mixture of oligosilsesquioxanes with tertiary amine and primary and secondary hydroxylic groups in the organic part of a molecule is investigated by gel penetrating chromatography (GPC) and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI ToF MS). These compoun...
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| Datum: | 2007 |
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| Hauptverfasser: | , , , , , , |
| Format: | Artikel |
| Sprache: | Russian |
| Veröffentlicht: |
Видавничий дім "Академперіодика" НАН України
2007
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| Schlagworte: | |
| Online Zugang: | https://nasplib.isofts.kiev.ua/handle/123456789/3834 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Zitieren: | Исследование смеси олигомерных силсесквиоксанов методами гельпроникающей хроматографии и матричной лазерно-активированной десорбционно/ионизационной масс-спектрометрии / Н.С. Клименко, М.А. Гуменная, А.В. Шевчук, В.В. Бойчук, С.В. Снегир, В.А. Покровский, В.В. Шевченко // Доп. НАН України. — 2007. — № 12. — С. 132-138. — Бібліогр.: 15 назв. — рос. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| Zusammenfassung: | The mixture of oligosilsesquioxanes with tertiary amine and primary and secondary hydroxylic groups in the organic part of a molecule is investigated by gel penetrating chromatography (GPC) and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI ToF MS). These compounds are characterized by a polymodal molar mass distribution, as shown by GPC measurements. Due to a large number of polar hydroxylic groups, a very stable H-bond network is formed at room temperature. This network cannot be completely disrupted by dissolving in N,N-dimethylformamide as well as by the addition of LiCl and Cu(OAc)2 in the solution. This is a reason for a molar mass displacement to the side of higher
values by GPC data. There is an essential discrepancy between GPC and MALDI ToF MS
data.
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| ISSN: | 1025-6415 |