Highly efficient spectral hole-burning in oxygen-evolving photosystem II preparations
We present the first report of highly efficient persistent spectral hole-burning in active (oxygen-evolving) Photosystem II (PSII) preparations. Samples are poised in the S1 state of the Kok cycle, with the primary quinone (QA) either neutral or photoreduced to QA- via a low-temperature pre-illumination. Remarkably efficient hole-burning is observed within the chlorophyll Qy(0,0) absorption envelope in the wavelength range of 676-695 nm. The hole-burning action spectrum of a sample poised in...[Show more]
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|Source:||Journal of Physical Chemistry B|
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