Carotenoids in light harvesting: A general molecular theory

Building on the PI’s novel theoretical work this Leverhulme Trust-funded project aims to formulate a general molecular theory of the multiple functions of the carotenoid pigments in natural and artificial light-harvesting. Using a combination of quantum chemistry, energy transfer theory and molecular dynamics we will establish the theoretical basis to predict how intrinsic molecular and environmental factors define the diverse and flexible functionality of these pigments in light-harvesting. Although fundamental in nature, it will provide the theoretical tools necessary for the rational design and optimization of future light-harvesting solar energy technologies.

 

[1] Fox KF, Bricker WP, Lo CS, Duffy CDP (2015) J. Phys. Chem B 119, 15550-15560.

Dissipative pathways in the photosystem-II antenna in plants

Reproduced from Duffy et al. (2013) PCCP, 15, 18752-18770 with permission from yhr PCCP Owners Societies.

Far from being a static structure, the photosynthetic membrane of higher plants is a highly dynamic system, with protein mobility playing an important role in the damage/repair cycle of photosystem II (PSII), in balancing the input of energy between PSI and PSII, and in the photoprotection of PSII in response to a sudden excess of illumination. We are studying how the variable macro-organisation of the photosynthetic membrane is central to the efficiency and photoprotective flexibility of the photosynthetic membrane of higher plants.

 

[1] Duffy CDP, Ruban AV (2015) J. Photochem. Photobiol. B: Biol. 152, 215-226.

[2] Duffy CDP, Valkunas L, Ruban AV (2013) Phys. Chem. Chem. Phys. 15, 18752-18770.

The photoprotective switch in plant antenna proteins

Reproduced from Duffy et al. (2015) PCCP, 17, 15857-15876 with permission from yhr PCCP Owners Societies.

Far from being a static structure, the photosynthetic membrane of higher plants is a highly dynamic system, with protein mobility playing an important role in the damage/repair cycle of photosystem II (PSII), in balancing the input of energy between PSI and PSII, and in the photoprotection of PSII in response to a sudden excess of illumination. We are studying how the variable macro-organisation of the photosynthetic membrane is central to the efficiency and photoprotective flexibility of the photosynthetic membrane of higher plants.

 

 

[1] Duffy CDP, Ruban AV (2015) J. Photochem. Photobiol. B: Biol. 152, 215-226.

[2] Duffy CDP, Valkunas L, Ruban AV (2013) Phys. Chem. Chem. Phys. 15, 18752-18770.

Contact Information

Dr Christopher Duffy

Lecturer in Cellular and Molecular Biology

School of Biological and Chemical Sciences

Queen Mary University of London

Mile End

London E1 4NS

 

Tel: +44 (0)20 7882 8006

Email:c.duffy@qmul.ac.uk

 

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