CATALYSIS

Simpler coating of silica surfaces

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Science  19 Sep 2014:
Vol. 345, Issue 6203, pp. 1464
DOI: 10.1126/science.345.6203.1464-b

Organic coatings often are applied to silica surfaces found in optics, catalysts, and drug delivery systems in order to improve their functional properties. These coatings typically are formed by reacting surficial hydroxyl groups with organosilicon compounds. However, that approach requires either stringent reaction conditions or long reaction times. Moitra et al. show that silica can be coated in a few minutes with hydrosilanes, using a fluoro-organoborane catalyst. Hydrosilanes can bear a wide variety of functional groups, making this a versatile method.

J. Am. Chem. Soc. 136, 11570 (2014).

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