Abstract
The preparation and characterization of sol-gel composites for fluorescent detection of solvents (using dansyl-labelled β-cyclodextrin) and Al 3+ ions (using Morin), and for colourimetric detection of Cu 2+ (using Eriochrome Cyanine R) is described. The active roles played by both the entrapped reagent and the sol-gel matrix in the sensing processes are discussed.
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