1. Volume 1, Issue 1, Pages 5-9 (September 2017)
Photosynthetic Water Splitting Provides a Blueprint for Artificial Leaf Technology 
James Barber 
Joule 
Volume 1, Issue 1, Pages 5-9 (September 2017)
DOI: /j.joule
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2. Figure 1
Cubane Structures of the Mn4Ca Cluster of the Water-Splitting Catalytic Site of PSII
(A) The first model derived from X-ray crystallography at 3.5 Å in
(B) Improved model derived from X-ray crystallography at 1.9 Å in
(C) Synthesized compound in the absence of protein.6 Taken from McEvoy and Brudvig.7
Joule 2017 1, 5-9DOI: ( /j.joule )
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3. Figure 2
Diagrammatic Representation of a Mechanistic Scheme for Water Splitting and Dioxygen Formation in PSII
The substrate water molecules and products of the oxidation reactions for each S state are shown in red. Intermediates that may exist between the S-state transitions are not depicted nor is the possible peroxide intermediate just prior to O-O bond formation. Although the electrophilic oxo in the S4 state is shown attached to MnV it could equally be incorporated in a terminal MnIV-oxyl. Taken from Barber.3
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4. Figure 3 An Example of an Artificial Leaf
Diagrammatic representation of a tandem photoelectrochemical cell incorporating perovskite (CH3NH3PbI3) and hematite (Fe2O3) nanorods doped with Co and requiring no external electrical bias for photo-driven water splitting. Taken from Gurudayal et al.18
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5. Joule 2017 1, 5-9DOI: ( /j.joule )
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