title: Remote Control by π-Conjugation of the Emissive Properties of Fischer Carbene-BODIPY Dyads.
abstract: The synthesis, structure, and complete characterization of mono- and bimetallic dyads joining Fischer carbene complexes and BODIPY chromophores are reported. In these organometallic species, the Fischer carbene complex is attached to the BODIPY moiety through a p-aminophenyl group linked at the C8 carbon atom of the BODIPY core. The photophysical properties, namely the corresponding UV/vis absorption and emission spectra of these new metal-carbene complexes, are analyzed and discussed. It is found that whereas the absorption of the considered dyads strongly resembles that of the parent 4-anilinyl-substituted BODIPY, the fluorescence emission is significantly reduced in these species, very likely as a result of a Förster-type energy transfer mechanism. At variance, the replacement of the pentacarbonyl-metal(0) fragment by a carbonyl group leads to high fluorescence emission intensity. In addition, the emissive properties of the BODIPY core in these organometallic dyads can be tuned by remote groups by means of π-conjugation, as supported by density functional theory calculations.
authors.affiliation: Departamento de Química Orgánica I and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Química, Universidad Complutense , 28040 Madrid, Spain.
authors.forename: Gong M
authors.initials: GM
authors.lastname: Chu
authors.affiliation: Departamento de Química Física I, Facultad de Ciencias Químicas, Universidad Complutense de Madrid , 28040 Madrid, Spain.
authors.forename: Andrés
authors.initials: A
authors.lastname: Guerrero-Martínez
authors.affiliation: Departamento de Química Orgánica, Universidad de Valencia , 46100 Valencia, Spain.
authors.forename: Carmen
authors.initials: C
authors.lastname: Ramírez de Arellano
authors.affiliation: Departamento de Química Orgánica I and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Química, Universidad Complutense , 28040 Madrid, Spain.
authors.forename: Israel
authors.initials: I
authors.lastname: Fernández
authors.affiliation: Departamento de Química Orgánica I and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Química, Universidad Complutense , 28040 Madrid, Spain.
authors.forename: Miguel A
authors.initials: MA
authors.lastname: Sierra