High-Yield Synthesis of Amido-Functionalized Polyoctahedral Oligomeric Silsesquioxanes by Using Acyl Chlorides

作者：Janeta Mateusz; John Lukasz^*; Ejfler Jolanta; Szafert Slawomir

来源：Chemistry - A European Journal, 2014, 20(48): 15966-15974.

DOI：10.1002/chem.201404153

• nanoparticles
• nanostructures
• organic-inorganic composites
• solid-state structures
• silicon

Homosubstituted amido-functionalized polyoctahedral oligomeric silsesquioxanes (POSS) have been synthesized by using acyl chlorides in high yields (ca. 95%). The method proved to be superior over " conventional" syntheses applying carboxylic acids or acid anhydrides, which are much less efficient (ca. 60% yield). A palette of aryl and alkyl groups has been used as side-chains. The structures of the resulting amide-POSS are supported by multinuclear 1H, 13C, Si-29 NMR and FTIR spectroscopy and their full conversion into octasubstituted derivatives was confirmed using mass spectrometry. We also demonstrate that the functionalized silsesquioxanes with bulky organic side-chains attached to cubic siloxane core form spherical-like, well-separated nanoparticles with a size of approximately 5 nm.

• 出版日期2014-11-24