Ketoprofen Recognition and Sensing by Zn(II) Complexes with Fluorogenic Triamine Receptors.

ABSTRACT: Ligands L1 and L2 are composed, respectively, by a diethylenetriamine or a dipropylenetriamine moiety linked at their extremities to anthracene units through methylene bridges and form stable 1:1 complexes with Zn(II), in which the metal is coordinated by all three nitrogens of the ligands. Zn(II) binding by L1 leads to a marked enhancement of the fluorescence emission, thanks to the inhibition of the photoinduced electron transfer (PET) process from the benzylic amine groups of the triamine sub-unit to the excited fluorophore, which normally quenches the emission of fluorescent polyamine receptors. Conversely, the emission of L2 is somewhat quenched by Zn(II) binding likely due-as also indicated by ab initio calculations and molecular dynamics simulations-to the formation of cation π quen

SUBMITTER: Simonini Steiner YT 

PROVIDER: S-EPMC12693136 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature