Der Einfluß des Lösungsmittels und der Temperatur auf die Geometrie des Singulett-Anregungszustandes von 9,9ʹ-Bis(acridizinium-yl)-perchloratDeactivation Behaviour of Arenes and Heteroarenes. XXXVI. The Solvent and Temperature Dependence of Deactivation Behaviour of 9, 9′-Bis(acri...
Ihmels, "Selective ratiometric detection of mercury(II) ions in water with an acridizinium-based fluorescent probe," Chem. Commun. (22), 3175-3177 (2009).Selective ratiometric detection of mercury (II) ions in water with an acridizinium-based fluorescent probe. Tian M,Ihmels H. Chemical ...
Investigates the regioselective photodimerization of 9-substituted acridizinium salts in the solid state. Attachment of a pi-donor substituent at the 9-position of the compounds; Orientation of two acridizinium molecules toward each other; Anti-head-to-tail preorganization for a selective solid-...
The 8-hydroxyacridizinium ion (8-hydroxy-4a-azoniaanthracene) exhibits increased acidity in the excited state and represents a novel class of water-soluble photoacids.Heiko IhmelsUniversity of SiegenKatya SchäferUniversity of SiegenPhotochemical & Photobiological Sciences...
Irradiation of 8-bromoacridizinium bromide in the solid state gave preferentially the anti-head-to-head dimmer whereas a benzo-annelated acridizinium salt gives exclusively the corresponding anti-head-to-tail photodimer. The results are discussed on the basis of X-ray diffraction analysis and DFT...