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Spectroscopy of individual LH2 complexes of Rhodopseudomonas acidophila: Localized excitations in the B800 band

Journal Article


Abstract


  • Using single-molecule detection techniques, fluorescence-excitation spectra from the B800 absorption band of individual light-harvesting complexes (LH2) of purple bacteria at 1.2 K were recorded. The spectra show distributions of narrow absorption lines that originate from excitations that are mainly localized on individual B800 bacteriochlorophyll a molecules. Spectroscopic details normally hidden under the inhomogeneous broadening, such as the degree of disorder in the pigment rings, the excited state dynamics and the energy transfer can be obtained.

Publication Date


  • 1999

Citation


  • Van Oijen, A. M., Ketelaars, M., Köhler, J., Aartsma, T. J., & Schmidt, J. (1999). Spectroscopy of individual LH2 complexes of Rhodopseudomonas acidophila: Localized excitations in the B800 band. Chemical Physics, 247(1), 53-60. doi:10.1016/S0301-0104(99)00105-6

Scopus Eid


  • 2-s2.0-0033468592

Start Page


  • 53

End Page


  • 60

Volume


  • 247

Issue


  • 1

Abstract


  • Using single-molecule detection techniques, fluorescence-excitation spectra from the B800 absorption band of individual light-harvesting complexes (LH2) of purple bacteria at 1.2 K were recorded. The spectra show distributions of narrow absorption lines that originate from excitations that are mainly localized on individual B800 bacteriochlorophyll a molecules. Spectroscopic details normally hidden under the inhomogeneous broadening, such as the degree of disorder in the pigment rings, the excited state dynamics and the energy transfer can be obtained.

Publication Date


  • 1999

Citation


  • Van Oijen, A. M., Ketelaars, M., Köhler, J., Aartsma, T. J., & Schmidt, J. (1999). Spectroscopy of individual LH2 complexes of Rhodopseudomonas acidophila: Localized excitations in the B800 band. Chemical Physics, 247(1), 53-60. doi:10.1016/S0301-0104(99)00105-6

Scopus Eid


  • 2-s2.0-0033468592

Start Page


  • 53

End Page


  • 60

Volume


  • 247

Issue


  • 1