Abstract
AbstractThe synthesis and full characterization of new bis‐indolylmethanes containing thienyl and bithienyl moieties are reported. The sensor ability of the compounds in the presence of halide ions (F−, Cl−, Br−, and I−), NO, ClO, SO, CN−, and OH− ions was investigated in acetonitrile. The experimental results indicate that they could act as selective chromogenic‐sensing molecules for the most basic anions F−, CN−, and OH−, as a well‐defined color change from yellow to pink was observed. The interaction constants between compounds 1 and 2 in the presence of F−, CN−, and OH− were calculated and increased in the order OH− > F− > CN−. Copyright © 2008 John Wiley & Sons, Ltd.
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