Development of hybrid particles using 1,2-bis(triethoxysilyl)ethane: Evaluation of reversed-phase chromatographic performance

POLY 131

Kevin Wyndham, kwyndham@waters.com, Nicole Lawrence, Ken Glose, Jim Cook, Dan Walsh, Darryl Brousmiche, Pamela Iraneta, Bonnie A. Alden, Cheryl Boissel, and Thomas H. Walter. Waters Corporation, 34 Maple ST, Milford, MA 01757-3696
The development of hybrid organic/inorganic particles as chromatographic packing materials has been a great advance for reversed-phase HPLC. Hybrid particles allow for similar selectivity and method development and have increased chemical stability toward alkaline mobile phases when compared with traditional silica-based packing materials. Since initial commercialization of methyl hybrid columns in 1999, our group has continued to research the synthesis of hybrid particles and evaluate the use of these materials in chromatographic applications. This report will cover the synthesis of hybrid particles based on different molar ratios of organofunctional silanes. In particular we will explore mixed condensation reactions of tetraethoxysilane with 1,2-bis(triethoxysilyl)ethane. Attention is focused on developing methods to prepare highly spherical particles with desirable pore properties.

 

General Papers: Functional Materials
6:00 PM-8:00 PM, Sunday, August 19, 2007 BCEC -- Exhibit Hall - B2, Poster

Sci-Mix
8:00 PM-10:00 PM, Monday, August 20, 2007 BCEC -- Exhibit Hall - B2, Sci-Mix

Division of Polymer Chemistry

The 234th ACS National Meeting, Boston, MA, August 19-23, 2007