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Cationic Heterocyclic Receptors

The principle of photoinduced electron transfer is combined with the modular system Fluorophore-Spacer-Receptor to develop the phenomenon of cation-responsive fluorescence. pH controlled on-off fluorescence is demonstrated in the case of the dialkylaminoalkyl heterocyclic derivative la. The modular system is then extended in two directions. In the first of these, targetting/anchoring modules are added to allow the investigation of proton fields in microheterogeneous membrane media with high spatial resolution. The sensor family 2a-f is the realization of this approach. The second direction employs phosphorescent (instead of fluorescent) modules with/without protective shields to permit the development of phosphorescent pH sensing in an interference-free manner within... [Pg.45]

See other pages where Cationic Heterocyclic Receptors is mentioned: [Pg.998]    [Pg.545]    [Pg.191]    [Pg.124]    [Pg.175]    [Pg.302]    [Pg.546]    [Pg.175]    [Pg.811]    [Pg.46]    [Pg.282]    [Pg.520]    [Pg.707]    [Pg.1162]    [Pg.1230]    [Pg.1967]    [Pg.573]    [Pg.573]    [Pg.6]    [Pg.6]    [Pg.9]    [Pg.9]    [Pg.14]    [Pg.21]    [Pg.28]    [Pg.38]    [Pg.210]   
See also in sourсe #XX -- [ Pg.17 ]



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