Comparative excited state dynamics of metallo meso-(4-fluoro-2,6-dimethyl-phenyl) porphyrins.

[Display omitted] • Metalloporphyrin synthesis and structural characterization. • Ultrafast excited state dynamics. • Nonradiative decay kinetics and mechanisms. The Mn(III)Cl and Pd(II) meso -(4-fluoro-2,6-dimethyl-phenyl) porphyrins have been synthesized and structurally characterized by X-ray crystallography. Together with its Zn(II) congener, this homologous series of porphyrins show the manifestation of d–d states and spin–orbit coupling on the excited state dynamics of metalloporphyrins. [ABSTRACT FROM AUTHOR]