Photoelectron Generation by Photosystem II Core Complexes Tethered to Gold Surfaces

Vittadello, Michele; Gorbunov, Maxim Y.; Mastrogiovanni, Daniel T.; Wieluński, L.S.; Garfunkel, Eric; Guerrero, Fernando; Kirilovsky, Diana; Sugiura, Masahiro; Rutherford, A. William; Safari, A.; Falkowski, Paul G.

doi:10.1002/cssc.200900255

Cited by 35 publications

(27 citation statements)

References 26 publications

(30 reference statements)

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“…[32] To harvest light energy, it is thermodynamically beneficial to collect electrons when the photosynthetic component is in its high-energy state, such as photoinduced PS II. [33,34] Furthermore, it is advantageous to use a photosynthetic system that is able to use water as the electron donor such as PS II instead of PS I, in which an additional electron donor is required. Attempts have been made to immobilize the PS II reaction center on the electrode surface through cytochromes [25] and nickel nitrilotriacetic acid [35] as cross linkers.…”

Section: Introductionmentioning

confidence: 99%

Photoelectrochemical Communication between Thylakoid Membranes and Gold Electrodes through Different Quinone Derivatives

et al. 2014

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Photosynthesis is a sustainable process for the conversion of light energy into chemical energy. Thylakoids in energy‐transducing photosynthetic membranes are unique in biological membranes because of their distinguished structure and composition. The quantum trapping efficiency of thylakoid membranes is appealing in photobioelectrochemical research. In this study, thylakoid membranes extracted from spinach are shown to communicate with a gold‐nanoparticle‐modified solid gold electrode (AuNP–Au) through a series of quinone derivatives. Among these, para‐benzoquinone (PBQ) is found to be the best soluble electron‐transfer mediator, generating the highest photocurrent of approximately 130 μA cm−2 from water oxidation under illumination. In addition, the photocurrent density is investigated as a function of applied potential, the effect of light intensity, quinone concentration, and amount of thylakoid membrane. Finally, the source of photocurrent is confirmed by using 3‐(3,4‐dichlorophenyl)‐1,1‐dimethylurea (known by its trade name, Diuron), an inhibitor of photosystem II, which decreases the total photocurrent by 50 %.

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Section: Introductionmentioning

confidence: 99%

Photoelectrochemical Communication between Thylakoid Membranes and Gold Electrodes through Different Quinone Derivatives

et al. 2014

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“…Technical applications are increasingly exploiting the efficiency of photosynthesis for solid-state devices mimicking photovoltaic cells. Photo-electric currents have been achieved with immobilized chloroplasts [7], thylakoid membranes [8-10], PSII [11, 12] or PSI [13-16] core complexes and isolated reaction centres [17-19]. One of the most promising current bio-photovoltaic without using elaborate or expensive surface chemistries is a PSI complex attached to a semiconductor, achieving a photocurrent density of 362 µA/cm 2 and 0.5 V [15].…”

Section: Introductionmentioning

confidence: 99%

Regulation of Photosynthetic Electron Transport and Photoinhibition

Roach¹,

Krieger‐Liszkay

2014

CPPS

235

149

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Photosynthetic organisms and isolated photosystems are of interest for technical applications. In nature, photosynthetic electron transport has to work efficiently in contrasting environments such as shade and full sunlight at noon. Photosynthetic electron transport is regulated on many levels, starting with the energy transfer processes in antenna and ending with how reducing power is ultimately partitioned. This review starts by explaining how light energy can be dissipated or distributed by the various mechanisms of non-photochemical quenching, including thermal dissipation and state transitions, and how these processes influence photoinhibition of photosystem II (PSII). Furthermore, we will highlight the importance of the various alternative electron transport pathways, including the use of oxygen as the terminal electron acceptor and cyclic flow around photosystem I (PSI), the latter which seem particularly relevant to preventing photoinhibition of photosystem I. The control of excitation pressure in combination with the partitioning of reducing power influences the light-dependent formation of reactive oxygen species in PSII and in PSI, which may be a very important consideration to any artificial photosynthetic system or technical device using photosynthetic organisms.

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“…On the other hand, while the photochemical energy conversion efficiency of the freshly isolated PS2 was 0.7, the same parameter for the PS2 immobilized on Au was 0.53. This clearly indicated that the PS2 complexes were photochemically stable even after immobilization, but long-term stability was not discussed by the authors (Vittadello et al, 2010).…”

Section: Photosystem II As Photobiocatalystmentioning

confidence: 81%

“…To achieve that, Vittadello et al (2010) reported the application of histidine-tagged protein complex of PS2 from S. elongatus covalently bound to a gold electrode treated with Ni(2+)-nitrilotriacetic acid (Ni-NTA). The current density of the resulting photobioelectrochemical cell reached 43 mkA/cm 2 .…”

Section: Photosystem II As Photobiocatalystmentioning

confidence: 99%

Photoelectrochemical cells based on photosynthetic systems: a review

et al. 2015

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HIGHLIGHTSPhotosynthesis is a process which converts light energy into energy contained in the chemical bonds of organic compounds by photosynthetic pigments such as chlorophyll (Chl a, b, c, d, f) or bacteriochlorophyll. It occurs in phototrophic organisms, which include higher plants and many types of photosynthetic bacteria, including cyanobacteria. In the case of the oxygenic photosynthesis, water is a donor of both electrons and protons, and solar radiation serves as inexhaustible source of energy. Efficiency of energy conversion in the primary processes of photosynthesis is close to 100%. Therefore, for many years photosynthesis has attracted the attention of researchers and designers looking for alternative energy systems as one of the most efficient and eco-friendly pathways of energy conversion. The latest advances in the design of optimal solar cells include the creation of converters based on thylakoid membranes, photosystems, and whole cells of cyanobacteria immobilized on nanostructured electrode (gold nanoparticles, carbon nanotubes, nanoparticles of ZnO and TiO2). The mode of solar energy conversion in photosynthesis has a great potential as a source of renewable energy while it is sustainable and environmentally safety as well. Application of pigments such as Chl f and Chl d (unlike Chl a and Chl b), by absorbing the far-red and near infrared region of the spectrum (in the range 700-750 nm), will allow to increase the efficiency of such light transforming systems. This review article presents the last achievements in the field of energy photoconverters based on photosynthetic systems.

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Photoelectron Generation by Photosystem II Core Complexes Tethered to Gold Surfaces

Cited by 35 publications

References 26 publications

Photoelectrochemical Communication between Thylakoid Membranes and Gold Electrodes through Different Quinone Derivatives

Photoelectrochemical Communication between Thylakoid Membranes and Gold Electrodes through Different Quinone Derivatives

Regulation of Photosynthetic Electron Transport and Photoinhibition

Photoelectrochemical cells based on photosynthetic systems: a review

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