Zinc porphyrin with phenoxy-bridged pentacoordinate bis(8-hydroxyquinaldinate)gallium lateral pendants: synthesis and photophysical characterization |
| |
Authors: | Massimo La Deda Mauro Ghedini Iolinda Aiello Irene De Franco |
| |
Affiliation: | aCentro di Eccellenza CEMIF.CAL, LASCAMM, Unità INSTM della Calabria, Dipartimento di Chimica, Università della Calabria, I-87030 Arcavacata (CS), Italy |
| |
Abstract: | This communication reports the synthesis of polymetallic species formed by a zinc-tetraphenolporphyrinate core (ZnTPP(OH)4, 1) and peripheral gallium-quinaldinate fragments. The photophysical analysis of 1 and of the model compound , R, shows an appreciable overlap between the absorption spectra of 1 and the emission spectra of R, suggesting the presence of a donor–acceptor energy-transfer process. Contrarily, the obtained results indicated that energy transfer does not occur, hence these polymetallic complexes work as double emitting species, for which the colour of luminescence depends on the excitation energy. |
| |
Keywords: | Metalloporphyrin Gallium quinaldinate complexes Photophysics Energy transfer Fluorescence |
本文献已被 ScienceDirect 等数据库收录! |
|