Abstract
A self-organized fluorescent sensor consisting of alizarin and o-aminomethylphenylboronic acid 1 is presented, the ensemble shows highly selective fluoride ion-response in H2O-MeOH (1:4 w/w) at pH 5.5. Compound 1 (pK(a) = 5.63) at pH5.5 in the solution follows the equilibrium: alizarin-1 + H+ reversible arrow 1H(+) + alizarin. Thus, F- added into the solution preferably binds to 1H(+) to allow the ensemble to release alizarin, resulting in a fluorescence quenching.
Original language | English |
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Pages (from-to) | 996 |
Number of pages | 1 |
Journal | Chemistry Letters |
Volume | 35 |
Issue number | 9 |
DOIs | |
Publication status | Published - 2006 |