Study of the intermediate S-states for water oxidation in the normal and Ca-depleted photosynthetic oxygen-evolving enzyme by means of flash-induced X-ray absorption near edge structure spectroscopy

1994 ◽  
Vol 22 (2) ◽  
pp. 331-335 ◽  
Author(s):  
Taka-aki Ono ◽  
Takumi Noguchi ◽  
Yorinao Inoue ◽  
Masami Kusunoki ◽  
Hirotaka Yamaguchi ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Edge Structure ◽  
X Ray ◽  
Photosynthetic Oxygen ◽  
Oxygen Evolving ◽  
X Ray Absorption ◽  
S States

X-Ray Absorption Spectroscopy of the Photosynthetic Oxygen Evolving Complex

1990 ◽  
pp. 797-800 ◽  
Author(s):  
J. E. Penner-Hahn ◽  
R. M. Fronko ◽  
G. S. Waldo ◽  
C. F. Yocum ◽  
N. R. Bowlby ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
Oxygen Evolving Complex ◽  
X Ray ◽  
Photosynthetic Oxygen ◽  
Oxygen Evolving ◽  
X Ray Absorption

Comparison of the structure of the manganese complex in the S1 and S2 states of the photosynthetic oxygen-evolving complex: an x-ray absorption spectroscopy study

Biochemistry ◽  
1987 ◽  
Vol 26 (19) ◽  
pp. 5974-5981 ◽  
Author(s):  
Vittal K. Yachandra ◽  
R. D. Guiles ◽  
Ann E. McDermott ◽  
James L. Cole ◽  
R. David Britt ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
Manganese Complex ◽  
Oxygen Evolving Complex ◽  
Spectroscopy Study ◽  
X Ray ◽  
Photosynthetic Oxygen ◽  
Oxygen Evolving ◽  
X Ray Absorption

Structural characterization of the manganese sites in the photosynthetic oxygen-evolving complex using x-ray absorption spectroscopy

1990 ◽  
Vol 112 (7) ◽  
pp. 2549-2557 ◽  
Author(s):  
James E. Penner-Hahn ◽  
Richard M. Fronko ◽  
Vincent L. Pecoraro ◽  
Charles F. Yocum ◽  
Scott D. Betts ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
Structural Characterization ◽  
Oxygen Evolving Complex ◽  
X Ray ◽  
Photosynthetic Oxygen ◽  
Oxygen Evolving ◽  
X Ray Absorption

scholarly journals Ballistic ΔS=2 Intersystem Crossing in a Cobalt Cubane Following Ligand-Field Excitation Probed by Extreme Ultraviolet Spectroscopy

2021 ◽  
Author(s):  
Yusef Shari'ati ◽  
Josh Vura-Weis
Keyword(s):  
Excited State ◽  
Water Oxidation ◽  
Extreme Ultraviolet ◽  
Ligand Field ◽  
Ultraviolet Spectroscopy ◽  
Intersystem Crossing ◽  
Edge Structure ◽  
X Ray ◽  
Field Excitation ◽  
X Ray Absorption

Femtosecond M2,3-edge X-ray absorption near-edge structure (XANES) spectroscopy is used to probe the excited-state dynamics of the cobalt cubane [CoIII4O4](OAc)4(py)4 (OAc = acetate, py = pyridine), a model for water oxidation catalysts. After ligand-field excitation, intersystem crossing to a metal-centered quintet occurs in 38 fs. 30% of the hot quintet undergoes ballistic back-ISC directly to the singlet ground stat, with the remainder relaxing to a long-lived triplet.

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