Jin-Soo Youk, Young-hee Kim, Eun Jin Kim
2004
Citations
0
Influential Citations
23
Citations
Journal
Bulletin of The Korean Chemical Society
Abstract
-selective ON-OFF type fluoroionophoricproperties in aqueous dioxane solution.Results and DiscussionThe targeted compounds were designed by the modifi-cation of well-known 8-HQ moiety. In the first step,benzothiazole moiety was introduced at 2-position ofquinoline to improve the fluorescence properties of 8-HQbackbone as well as to give an additional binding site ofthiazole functional group for the complexation of specificmetal ions. Secondly, modification of hydroxyl unit was alsocarried out in an attempt to improve the binding affinity forthe target metal ions as well as to provide the possibility ofthe introduction of the present chelating subunit into othersupramolecular systems. The syntheses of 8-HQ derivatives1 and 2 are shown in Scheme 1. 8-Hydroxyquinoline-2-benzothiazole 1 was prepared by the condensation of 8-hydroxyquinoline-2-carboxylic acid with 2-aminothiophenolin the presence of phosphorus trichloride in toluene