Abstract
AbstractPicosecond transient Spectroscopy has been used to measure excited state lifetimes ancfrspectra of Cr, Mn, Fe, Sn and Pb meso‐tetraphenylporphyrins. Excited state spectra are typical of π,π* states, and lifetimes vary from > 20 ns in Cr(III) tetraphenylporphyrin to 8 ps in Mn(II). This contrasting behaviour in the transition metal porphyrins is interpreted as being due to charge transfer states lying above the initially excited states in Cr but below those in Mn and Fe, as recently predicted by theory. Only in Sn(IV) tetraphenylporphyrin was the singlet‐singlet absorption spectrum measurable; the excited singlet state lifetimes for the other porphyrins were < 1 ps.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
More From: Berichte der Bunsengesellschaft für physikalische Chemie
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.