Optical Sensors Based on Nanostructured Cage Materials for the Detection of Toxic Metal Ions

Abstract

Seeing red: Highly sensitive and selective chemical sensing systems were developed for the naked-eye detection of toxic ions by the direct and indirect postgrafting of hydrophilic and hydrophobic chromophores into spherically nanosized cavities of cubic Fm3m monoliths (HOM-C10). This leads to reliable control over the visual detection of toxic metals such as PbII, CdII, SbIII, and HgII ions at a low concentrations (≈10−9 M). DZ= diphenylthiocarbazone. Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2002/2006/z602453_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.