Supramolecular energy transfer from photoexcited chlorosomal zinc porphyrin self-aggregates to a chlorin or bacteriochlorin monomer as models of main light-harvesting antenna systems in green photosynthetic bacteria

2012 ◽  
Vol 22 (16) ◽  
pp. 5218-5221 ◽  
Author(s):  
Yumiko Kataoka ◽  
Yutaka Shibata ◽  
Hitoshi Tamiaki
Keyword(s):  
Energy Transfer ◽  
Photosynthetic Bacteria ◽  
Light Harvesting ◽  
Zinc Porphyrin ◽  
Green Photosynthetic Bacteria ◽  
Light Harvesting Antenna ◽  
Antenna Systems

Carotenoids in photosynthesis

1978 ◽  
Vol 284 (1002) ◽  
pp. 569-579 ◽  
Keyword(s):  
Energy Transfer ◽  
Photosynthetic Bacteria ◽  
Light Harvesting ◽  
Protective Role ◽  
Reaction Centre ◽  
Triplet Energy ◽  
Photosynthetic Unit ◽  
Accessory Pigment ◽  
Light Harvesting Antenna ◽  
Triplet Energy Transfer

Carotenoids are usually considered to perform two major functions in photosynthesis. They serve as accessory light harvesting pigments, extending the range of wavelengths over which light can drive photosynthesis, and they act to protect the chlorophyllous pigments from the harmful photodestructive reaction which occurs in the presence of oxygen. Drawing upon recent work with photosynthetic bacteria, evidence is presented as to how the carotenoids are organized within both portions of the photosynthetic unit (the light harvesting antenna and the reaction centre) and how they discharge both their functions. The accessory pigment role is a singlet-singlet energy transfer from the carotenoid to the bacteriochlorophyll, while the protective role is a triplet-triplet energy transfer from the bacteriochlorophyll to the carotenoid.

scholarly journals A Molecular Level Approach To Elucidate the Supramolecular Packing of Light-Harvesting Antenna Systems

2018 ◽  
Vol 24 (56) ◽  
pp. 14989-14993
Author(s):  
Brijith Thomas ◽  
Rajeev K. Dubey ◽  
Max T. B. Clabbers ◽  
Karthick Babu Sai Sankar Gupta ◽  
Eric van Genderen ◽  
...  
Keyword(s):  
Light Harvesting ◽  
Molecular Level ◽  
Light Harvesting Antenna ◽  
Antenna Systems

scholarly journals Excitation energy transfer and equilibration process in LHCII studied by multidimensional electronic spectroscopy

2019 ◽  
Vol 205 ◽  
pp. 09038
Author(s):  
Thanh Nhut Do ◽  
Adriana Huerta-Viga ◽  
Cheng Zhang ◽  
Parveen Akhtar ◽  
Pawei J. Nowakowski ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Light Harvesting ◽  
Electronic Spectroscopy ◽  
Excitation Energy Transfer ◽  
Phenomenological Analysis ◽  
Two Dimensional ◽  
Light Harvesting Complex ◽  
Light Harvesting Complex Ii ◽  
Equilibration Process ◽  
Light Harvesting Antenna

Light-harvesting complex II (LHCII) – the light-harvesting antenna of Photosystem II – is a naturally abundant system that plays an important role in photosynthesis. In this study, we present a phenomenological analysis of the excitonic energy transfer in LHCII using ultrafast two-dimensional electronic spectroscopy, that we find compares well with previous theoretical and experimental results.

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