Probing Electronic Communication and Excited-State Dynamics in the Unprecedented Ferrocene-Containing Zinc MB-DIPY

Yuriy V. Zatsikha, Liliya I. Shamova, Jacob W. Schaffner, Andrew T. Healy, Tanner S. Blesener, Gabriel Cohen, Brandon Wozniak, David A. Blank, Victor N. Nemykin

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

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 languageEnglish (US)
Pages (from-to)28656-28662
Number of pages7
JournalACS Omega
Volume5
Issue number44
DOIs
StatePublished - Oct 10 2020

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