Chromogenic Discrimination of Primary Aliphatic Amines in Water with Functionalized Mesoporous Silica

Abstract

Tuning of the sensing abilities of certain chromogenic molecules is achieved by anchoring them to modified MCM-41-type solids. This approach allows chromogenic detection of primary aliphatic amines of a certain length in water. The Figure shows color changes of the functionalized solid (magenta–yellow) in the presence of n-heptylamine, n-octylamine, and n-nonylamine. Longer or shorter aliphatic chains induced no significant color variation. Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2089/2004/c0143_s.pdf or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.