The first events in photosynthesis: electronic coupling and energy transfer dynamics in the photosynthetic reaction center from Rhodobacter sphaeroides
Article Abstract:
'Two-color' wavelength-resolved pump probe and anisotropy measurements were used in studying the rapid electronic state dynamics that happen before charge separation takes place in the photosynthetic reaction center of Rhodobacter sphaeroides R-26. The experiments were carried out with optical pulses from a cavity-dumped Kerr lens mode-locked Ti:sapphire laser. Results indicated that a distinct optical band at 825 nm was formed when the bacteriochlorophyll B or the lower excitonic state of the special pair (Py-) was excited. The band appears immediately when Py- is excited with negative anisotropy but its appearance is delayed slightly after the excitation of B.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1999
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Direct gas-liquid interfacial dynamics: The reaction between O((super 3)P) and a liquid hydrocarbon
Article Abstract:
The first measurements of internal energy distributions of the OH produced by a direct mechanism of interfacial reaction between O((super 3)P) atoms and liquid squalane, C(sub 30)H(sub 62), by time-of-flight profile are reported. It was concluded that at least two mechanisms contribute to the production of OH and closer correspondence of translational and rotational energy distributions of higher velocity OH to those from the corresponding gas-phase of O((super 3)P) with smaller OH suggests a very similar, near collinear direct abstraction.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2006
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