T. Kuwabara et al., A NOVEL COLOR-CHANGEABLE HOST FOR MOLECULES - GUEST-INDUCED COLORLESS-TO-COLOR CHANGE OF PHENOLPHTHALEIN-MODIFIED BETA-CYCLODEXTRIN, Supramolecular chemistry, 8(1), 1996, pp. 13-15
For the purpose of constructing a novel color change indicator for org
anic compounds, phenolphthalein-modified beta-cyclodextrin (1) was pre
pared. Upon addition of guest species into the solution of 1 at pH 9.7
0, 1 tends to undergo a colorless-to-color change to different degrees
depending on the guest species. The color change of 1 is remarkable f
or ursodeoxycholic acid and chenodeoxycholic acid, among bile acids. 1
-Adamantanecarboxylic acid and 1-adamantanol were also detected with s
imilar high sensitivities.