The application of CAM-B3LYP to the charge-transfer band problem of the zincbacteriochlorin-bacteriochlorin complex

Rika Kobayashi*, Roger D. Amos

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    262 Citations (Scopus)

    Abstract

    The inability of standard density functionals to correctly predict charge-transfer excitation bands is a well-known problem. This shortcoming has been attributed to the incorrect treatment by the functionals of the long-range exchange potential. Accordingly, a number of long-range corrected schemes have been proposed to deal with this situation. We have applied the CAM-B3LYP variant to the zincbacteriochlorin-bacteriochlorin complex, a system which highlights this problem, and have found a significant improvement in the calculation of its excitation bands over other functionals. In particular, the spuriously low charge-transfer states found previously do not appear for CAM-B3LYP.

    Original languageEnglish
    Pages (from-to)106-109
    Number of pages4
    JournalChemical Physics Letters
    Volume420
    Issue number1-3
    DOIs
    Publication statusPublished - 10 Mar 2006

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