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Bromination of octaphenylsilsesquioxane

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Abstract

The bromination and characterization of octaphenylsilsesquioxane is reported. The reaction is successful with a variety of methods, including microwave assisted synthesis. The analysis of the obtained product mix was carried out with a combination of high performance liquid chromatography and matrix assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF-MS). The analysis indicates that the bromination leads to multiple bromines per octaphenylsilsesquioxane molecule with a distribution dominated by statistical odds and the reaction conditions. The results showed that the bromination is not selective and does not lead to a single defined product.

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Abbreviations

MALDI-TOF-MS:

matrix assisted laser desorption ionization time-of-flight mass spectra

POSS:

polyhedral oligomeric silsesquioxane

OPS:

octaphenylsilsesquioxane

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Correspondence to Christoph Erben.

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Erben, C., Grade, H. & Goddard, G.D. Bromination of octaphenylsilsesquioxane. Silicon Chem 3, 43–49 (2006). https://doi.org/10.1007/s11201-005-9000-5

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Keywords

  • Bromination
  • MALDI-TOF-MS
  • microwave synthesis
  • octaphenylsilsesquioxane
  • POSS