Supramolecular probe for bicarbonate exhibiting anomalous pyrene fluorescence in aqueous media.
Highly selective HCO3- sensing is realized in a pH 8.6 aqueous solution on the basis of the HCO3--induced anomalous pyrene fluorescence of an association dimer that consists of pyrene-appended gamma-cyclodextrins having a triamine linker. The anomalous fluorescence that is produced by the HCO3--induced twisted conformation of the pyrene residues in the association dimer is insensitive to the presence of other anions.
Suzuki
Iwao
I
Graduate School of Pharmaceutical Sciences, Tohoku University, Aramaki, Aoba-ku, Sendai 980-8578, Japan. isuzuki@mail.pharm.tohoku.ac.jp
Ui
Mihoko
M
Yamauchi
Akiyo
A
D001639:Bicarbonates / Q000032:analysis*; D002942:Circular Dichroism; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D008968:Molecular Conformation; D011721:Pyrenes / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D014867:Water / Q000737:chemistry; D047408:gamma-Cyclodextrins / Q000737:chemistry
D001639:Bicarbonates; D011721:Pyrenes; D047408:gamma-Cyclodextrins; D014867:Water