scholarly journals Measures and implications of electronic coherence in photosynthetic light-harvesting

2012 ◽  
Vol 370 (1972) ◽  
pp. 3728-3749 ◽  
Author(s):  
Cathal Smyth ◽  
Francesca Fassioli ◽  
Gregory D. Scholes
Keyword(s):  
Energy Transfer ◽  
Time Evolution ◽  
Time Scale ◽  
Light Harvesting ◽  
Electronic Energy ◽  
Light Harvesting Complexes ◽  
Electronic Energy Transfer ◽  
Rhodopseudomonas Acidophila ◽  
Scale Temperature ◽  
Entanglement Measures

We review various methods for measuring delocalization in light-harvesting complexes. Direct relations between inverse participation ratios (IPRs) and entanglement measures are derived. The B850 ring from the LH2 complex in Rhodopseudomonas acidophila is studied. By analysing electronic energy transfer dynamics in the B850 ring using different metrics for quantifying excitonic delocalization, we conclude that measures of entanglement are far more robust (in terms of time scale, temperature and level of decoherence) than IPRs, and are therefore more appropriate for the purpose of studying the time evolution of coherence in a system.

Coherent Electronic Energy Transfer and Organic Photovoltaics

2014 ◽  
Vol 93 ◽  
pp. 225-234
Author(s):  
Elisabetta Collini
Keyword(s):  
Energy Transfer ◽  
Light Harvesting ◽  
Electronic Spectroscopy ◽  
Electronic Energy ◽  
Spectroscopic Techniques ◽  
Experimental Proof ◽  
Electronic Energy Transfer ◽  
New Directions ◽  
Harvesting Process ◽  
Tremendous Impact

One of the most surprising and significant advances in the study of the photosynthetic light-harvesting process is the discovery that the electronic energy transfer (ET) might involve long-lived electronic coherences, also at physiologically relevant conditions. This means that the transfer of energy among different chromophores does not follow the expected classical incoherent hopping mechanism, but that quantum-mechanical laws can steer the migration of energy. The implications of such quantum transport regime, although currently under debate, might have a tremendous impact in our way to think about natural and artificial light-harvesting and suggest new directions for the development of artificial devices for the efficient capture and re-use of solar energy. Central to these discoveries has been the development of new ultrafast spectroscopic techniques, in particular two-dimensional electronic spectroscopy, which is now the primary tool to obtain clear and definitive experimental proof of such effects.

Long-Distance Electronic Energy Transfer in Light-Harvesting Supramolecular Polymers

2014 ◽  
Vol 53 (49) ◽  
pp. 13609-13613 ◽  
Author(s):  
Christian B. Winiger ◽  
Shaoguang Li ◽  
Ganesh R. Kumar ◽  
Simon M. Langenegger ◽  
Robert Häner
Keyword(s):  
Energy Transfer ◽  
Light Harvesting ◽  
Electronic Energy ◽  
Supramolecular Polymers ◽  
Long Distance ◽  
Electronic Energy Transfer

How Solvent Controls Electronic Energy Transfer and Light Harvesting

2007 ◽  
Vol 111 (25) ◽  
pp. 6978-6982 ◽  
Author(s):  
Gregory D. Scholes ◽  
Carles Curutchet ◽  
Benedetta Mennucci ◽  
Roberto Cammi ◽  
Jacopo Tomasi
Keyword(s):  
Energy Transfer ◽  
Light Harvesting ◽  
Electronic Energy ◽  
Electronic Energy Transfer

Artificial light-harvesting arrays for solar energy conversion

2015 ◽  
Vol 51 (59) ◽  
pp. 11745-11756 ◽  
Author(s):  
Anthony Harriman
Keyword(s):  
Energy Transfer ◽  
Solar Energy ◽  
Energy Conversion ◽  
Light Harvesting ◽  
Solar Energy Conversion ◽  
Electronic Energy ◽  
Artificial Light ◽  
Electronic Energy Transfer

Following natures' blueprint, the concept of artificial light-harvesting antennae is discussed in terms of sophisticated molecular arrays displaying a tailored cascade of electronic energy transfer steps.

Sign in / Sign up

Export Citation Format

Share Document