Temperature-dependent magnetic circular dichroism of lutetium bisphthalocyanine

Cara L. Dunford*, Bryce E. Williamson, Elmars Krausz

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    33 Citations (Scopus)


    Magnetic circular dichroism (MCD) and absorption spectra are reported for the Q, RV, and IV band regions (6000-19000 cm-1) of lutetium bisphthalocyanine in poly(methyl methacrylate) films and Ar matrixes. Weak, temperature-independent MCD of the IV band (∼7500 cm-1) is consistent with its assignment to the intervalence transition of a delocalized mixed-valence system. The temperature-dependent MCD of the Q (∼15300 cm-1) and RV (∼11000 cm-1) bands is quantified by moment analysis and interpreted to indicate excited-state spin-orbit splittings due to weak mixing of metal and ligand π Orbitals. The spectra are semiquantitatively consistent with interpretation of these bands as arising from fully allowed transitions terminating in exciton coupling states derived principally from π* ← π excitations of the individual ligands.

    Original languageEnglish
    Pages (from-to)3537-3543
    Number of pages7
    JournalJournal of Physical Chemistry A
    Issue number16
    Publication statusPublished - 27 Apr 2000


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