alexa An Infrared Study of the Amine-Catalyzed Reaction of Methoxymethylsilanes with Silica.
Materials Science

Materials Science

Journal of Nanomedicine & Nanotechnology

Author(s): White LD, Tripp CP

Abstract Share this page

Abstract A thin film infrared technique was used to investigate the reaction of methoxysilanes and amines with the silica surface. The low-frequency region contains bands due to Si-O-Si modes that are used to distinguish between hydrogen-bonded and chemisorbed species. It is shown that the competitive adsorption of amines and CH(3)OSi(CH(3))(3) differs from the results obtained using (CH(3)O)(2)Si(CH(3))(2) or (CH(3)O)(3)SiCH(3). The monomethoxysilane does not displace preadsorbed triethylamine whereas the triethylamine is displaced from the surface by both (CH(3)O)(2)Si(CH(3))(2) and (CH(3)O)(3)SiCH(3). In the reverse sequence, the triethylamine displaces all three methoxysilanes on the surface. When 1:1 mixtures of methoxysilanes and triethylamine (or propylamine) are co-added to silica, the amine preferentially adsorbs and is only displaced by subsequent chemisorption of the silane. The implication of these results for using a two-step amine-catalyzed reaction of methoxysilanes on silica is discussed. Copyright 2000 Academic Press. This article was published in J Colloid Interface Sci and referenced in Journal of Nanomedicine & Nanotechnology

Recommended Conferences

  • Nano Congress for Next Generation
    August 31-September 01, 2017 Brussels,Belgium
  • Graphene & 2D Materials
    September 14-15, 2017 Edinburgh, Scotland
Peer Reviewed Journals
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version