Multistep Energy and Electron Transfer in a “V-Configured” Supramolecular BODIPY-azaBODIPY-Fullerene Triad: Mimicry of Photosynthetic Antenna Reaction-Center Events

2014 ◽  
Vol 21 (6) ◽  
pp. 2669-2679 ◽  
Author(s):  
Venugopal Bandi ◽  
Fiona P. D'Souza ◽  
Habtom B. Gobeze ◽  
Francis D'Souza
Keyword(s):  
Electron Transfer ◽  
Reaction Center ◽  
Energy And Electron Transfer ◽  
Photosynthetic Antenna

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.

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.

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
Sign in / Sign up

Export Citation Format

Share Document