An Artificial Photosynthetic Antenna-Reaction Center Complex

1999 ◽  
Vol 121 (37) ◽  
pp. 8604-8614 ◽  
Author(s):  
Darius Kuciauskas ◽  
Paul A. Liddell ◽  
Su Lin ◽  
Thomas E. Johnson ◽  
Steven J. Weghorn ◽  
...  
Keyword(s):  
Reaction Center ◽  
Reaction Center Complex ◽  
Artificial Photosynthetic ◽  
Photosynthetic Antenna

Efficient Energy Transfer and Electron Transfer in an Artificial Photosynthetic Antenna−Reaction Center Complex†

2002 ◽  
Vol 106 (10) ◽  
pp. 2036-2048 ◽  
Author(s):  
Gerdenis Kodis ◽  
Paul A. Liddell ◽  
Linda de la Garza ◽  
P. Christian Clausen ◽  
Jonathan S. Lindsey ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Energy Transfer ◽  
Reaction Center ◽  
Efficient Energy Transfer ◽  
Efficient Energy ◽  
Reaction Center Complex ◽  
Artificial Photosynthetic ◽  
Photosynthetic Antenna

Energy and Photoinduced Electron Transfer in a Wheel-Shaped Artificial Photosynthetic Antenna-Reaction Center Complex

2006 ◽  
Vol 128 (6) ◽  
pp. 1818-1827 ◽  
Author(s):  
Gerdenis Kodis ◽  
Yuichi Terazono ◽  
Paul A. Liddell ◽  
Joakim Andréasson ◽  
Vikas Garg ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Reaction Center ◽  
Photoinduced Electron Transfer ◽  
Reaction Center Complex ◽  
Artificial Photosynthetic ◽  
Photosynthetic Antenna

A New Approach for the Photosynthetic Antenna-Reaction Center Complex with a Model Organized Around ans-Triazine Linker

2014 ◽  
Vol 20 (7) ◽  
pp. 2049-2057 ◽  
Author(s):  
Susanne Kuhri ◽  
Georgios Charalambidis ◽  
Panagiotis A. Angaridis ◽  
Theodore Lazarides ◽  
Georgia Pagona ◽  
...  
Keyword(s):  
Reaction Center ◽  
New Approach ◽  
Reaction Center Complex ◽  
Photosynthetic Antenna

Artificial photosynthetic antenna-reaction center complexes based on a hexaphenylbenzene core

2005 ◽  
Vol 09 (10) ◽  
pp. 706-723 ◽  
Author(s):  
Yuichi Terazono ◽  
Paul A. Liddell ◽  
Vikas Garg ◽  
Gerdenis Kodis ◽  
Alicia Brune ◽  
...  
Keyword(s):  
Reaction Center ◽  
Alder Reaction ◽  
Diels Alder ◽  
Nmr Studies ◽  
Substitution Pattern ◽  
Diels Alder Reaction ◽  
Energy And Electron Transfer ◽  
Reaction Center Complexes ◽  
Artificial Photosynthetic ◽  
Photosynthetic Antenna

A hexaphenylbenzene scaffold has been used to organize the components of artificial photosynthetic antennas and antenna-reaction center mimics that feature bis(phenylethynyl)anthracene antenna moieties and porphyrin-fullerene charge-separation units. The five bis(phenylethynyl)anthracene chromophores absorb in the spectral region around 430-480 nm, where porphyrins have low extinction coefficients but solar irradiance is maximal. The hexaphenylbenzene core was built up by the well-known Diels-Alder reaction of diarylacetylenes with substituted tetraphenylcyclopentadienones. The latter were in turn prepared by condensation of substituted benzils and dibenzyl ketones, allowing flexibility in the design of the substitution pattern on the core. The spacing between the various chromophores is suitable for rapid singlet-singlet energy transfer among antenna moieties and the porphyrin, and the relatively rigid structure of the hexaphenylbenzene limits conformational heterogeneity that could reduce the efficiency of energy and electron transfer. NMR studies reveal a high barrier to rotation of the porphyirn plane relative to the hexaphenylbenzene.

scholarly journals Bioinspired energy conversion

2005 ◽  
Vol 77 (6) ◽  
pp. 1001-1008 ◽  
Author(s):  
Rodrigo E. Palacios ◽  
Stephanie L. Gould ◽  
Christian Herrero ◽  
Michael Hambourger ◽  
Alicia Brune ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Excited States ◽  
Chemical Potential ◽  
Photosynthetic Reaction Centers ◽  
Absorption Of Light ◽  
Reaction Center Complex ◽  
Tetrapyrrole Chromophores ◽  
Artificial Photosynthetic ◽  
Covalently Linked ◽  
Photosynthetic Antenna

Artificial photosynthetic antenna systems have been synthesized based on carotenoid polyenes and polymer-polyenes covalently attached to tetrapyrroles. Absorption of light in the blue/green region of the spectra excites the polyenes to their S2 state, and ultrafast singlet energy transfer to the tetrapyrroles occurs when the chromophores are in partial conjugation. The additional participation of other excited states of the polyene in the energy-transfer process is a requirement for perfect antenna function. Analogs of photosynthetic reaction centers consisting of tetrapyrrole chromophores covalently linked to electron acceptors and donors have been prepared. Excitation of these constructs results in a cascade of energy transfer/electron transfer which, in selected cases, forms a final charge-separated state characterized by a giant dipole moment (>150 D), a quantum yield approaching unity, a significant fraction of the photon energy stored as chemical potential, and a lifetime sufficient for reaction with secondary electron donors and acceptors. A new antenna-reaction center complex is described in which a carotenoid moiety is located in partial conjugation with the tetrapyrrole π-system allowing fast energy transfer (<100 fs) between the chromophores. In this assembly, the energy transduction process can be initiated by light absorbed by the polyene.

Multiantenna Artificial Photosynthetic Reaction Center Complex

2009 ◽  
Vol 113 (20) ◽  
pp. 7147-7155 ◽  
Author(s):  
Yuichi Terazono ◽  
Gerdenis Kodis ◽  
Paul A. Liddell ◽  
Vikas Garg ◽  
Thomas A. Moore ◽  
...  
Keyword(s):  
Reaction Center ◽  
Photosynthetic Reaction Center ◽  
Reaction Center Complex ◽  
Artificial Photosynthetic

Multi-modular, tris(triphenylamine) zinc porphyrin–zinc phthalocyanine–fullerene conjugate as a broadband capturing, charge stabilizing, photosynthetic ‘antenna-reaction center’ mimic

Nanoscale ◽  
2015 ◽  
Vol 7 (15) ◽  
pp. 6813-6826 ◽  
Author(s):  
Chandra B. KC ◽  
Gary N. Lim ◽  
Francis D'Souza
Keyword(s):  
Electron Transfer ◽  
Reaction Center ◽  
Zinc Phthalocyanine ◽  
Zinc Porphyrin ◽  
Donor Acceptor ◽  
Photosynthetic Antenna ◽  
Charge Stabilization

Charge stabilization as a result of electron transfer followed by a hole-shift mechanism is demonstrated in a supramolecular multi-modular donor–acceptor assembly.

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