Femtosecond fluorescence upconversion studies of light harvesting by beta-carotene in oxygenicphotosynthetic core proteins

Article Abstract:

The femtosecond fluorescence upconversion technique is used to study the energy transfer from beta-carotene to chlorophyll in the photosystem (PS) I core complex and the CP43, CP47 and reaction center (RC) proteins of PSII. The conclusion states that beta-carotene S1 state is insignificant for light harvesting in the PSII core proteins.

Fluorescence, Spectra, Beta carotene

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Transient absorption study of peridinin and peridinin-chlorophyll a-protein after two-photon excitation

Article Abstract:

Two-photon excited pump-probe spectroscopy was carried out on the peridinin- chlorophyll a-protein complex (PCP) and on the peridinin molecule in methanol solution. The effect of peridinin and peridinin- chlorophyll a-protein after two-photon excitation is studied.

All Other Basic Organic Chemical Manufacturing, Methanol, Photons, Spectrum analysis, Spectroscopy

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Exciton analysis in 2D electronic spectroscopy

Article Abstract:

A theoretical description of femtosecond two-dimensional electronic spectroscopy of multichromophoric systems is presented. The 2D spectra of the Fenna-Matthews-Olson (FMO) complex are analyzed, revealing excitonic coupling and relaxation processes.

Analytical Laboratory Instrument Manufacturing, Analytical instruments, Photo-Electron Spectroscopy, Analysis, Exciton theory, Excitons, Electron spectroscopy, Chemical properties

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