Abstract
The electronic communication between two ferrocene groups in the electron-deficient expanded aza-BODIPY analogue of zinc manitoba-dipyrromethene (MB-DIPY) was probed by spectroscopic, electrochemical, spectroelectrochemical, and theoretical methods. The excited-state dynamics involved sub-ps formation of the charge-separated state in the organometallic zinc MB-DIPYs, followed by recovery of the ground state via charge recombination in 12 ps. The excited-state behavior was contrasted with that observed in the parent complex that lacked the ferrocene electron donors and has a much longer excited-state lifetime (670 ps for the singlet state). Much longer decay times observed for the parent complex without ferrocene confirm that the main quenching mechanism in the ferrocene-containing 4 is reflective of the ultrafast ferrocene-to-MB-DIPY core charge transfer (CT).
Original language | English (US) |
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Pages (from-to) | 28656-28662 |
Number of pages | 7 |
Journal | ACS Omega |
Volume | 5 |
Issue number | 44 |
DOIs | |
State | Published - Nov 10 2020 |
Externally published | Yes |
Bibliographical note
Funding Information:Generous support from the Minnesota Supercomputing Institute, NSERC, CFI, University of Manitoba, and WestGrid Canada to V.N.N. is greatly appreciated. Generous support from the NSF support (DMR-1708177) to D.A.B. is also greatly appreciated.
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