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Journal articles on the topic 'Light Harvesting Systems'

Author: Grafiati

Published: 7 September 2023

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1

FOX, MARYE ANNE, WAYNE E. JONES, and DIANA M. WATKINS. "Light-Harvesting Polymer Systems." Chemical & Engineering News 71, no. 11 (March 15, 1993): 38–48. http://dx.doi.org/10.1021/cen-v071n011.p038.

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2

Reineker, P., Ch Warns, Ch Supritz, and I. Barvík. "Exciton dynamics in light harvesting systems." Journal of Luminescence 102-103 (May 2003): 802–6. http://dx.doi.org/10.1016/s0022-2313(02)00645-2.

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3

Chen, Lipeng, Prathamesh Shenai, Fulu Zheng, Alejandro Somoza, and Yang Zhao. "Optimal Energy Transfer in Light-Harvesting Systems." Molecules 20, no. 8 (August 20, 2015): 15224–72. http://dx.doi.org/10.3390/molecules200815224.

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4

Fleming, Graham R., and Rienk van Grondelle. "Femtosecond spectroscopy of photosynthetic light-harvesting systems." Current Opinion in Structural Biology 7, no. 5 (October 1997): 738–48. http://dx.doi.org/10.1016/s0959-440x(97)80086-3.

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5

Vollmer, Martin S., Frank Würthner, Franz Effenberger, Peter Emele, Dirk U. Meyer, Thomas Stümpfig, Helmut Port, and Hans C. Wolf. "Anthryloligothienylporphyrins: Energy Transfer and Light-Harvesting Systems." Chemistry - A European Journal 4, no. 2 (February 10, 1998): 260–69. http://dx.doi.org/10.1002/(sici)1521-3765(19980210)4:2<260::aid-chem260>3.0.co;2-9.

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6

Ensslen, Philipp, Fabian Brandl, Sabrina Sezi, Reji Varghese, Roger-Jan Kutta, Bernhard Dick, and Hans-Achim Wagenknecht. "DNA-Based Oligochromophores as Light-Harvesting Systems." Chemistry - A European Journal 21, no. 26 (June 9, 2015): 9349–54. http://dx.doi.org/10.1002/chem.201501213.

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7

Calderón, Leonardo F., and Leonardo A. Pachón. "Nonadiabatic sunlight harvesting." Physical Chemistry Chemical Physics 22, no. 22 (2020): 12678–87. http://dx.doi.org/10.1039/d0cp01672a.

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8

Thilagam, A. "Natural light harvesting systems: unraveling the quantum puzzles." Journal of Mathematical Chemistry 53, no. 2 (November 22, 2014): 466–94. http://dx.doi.org/10.1007/s10910-014-0442-x.

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9

Chmeliov, Jevgenij, Gediminas Trinkunas, Herbert van Amerongen, and Leonas Valkunas. "Excitation migration in fluctuating light-harvesting antenna systems." Photosynthesis Research 127, no. 1 (January 22, 2015): 49–60. http://dx.doi.org/10.1007/s11120-015-0083-3.

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10

Ma, Xinyu, Sebastian Bader, and Bengt Oelmann. "Power Estimation for Indoor Light Energy Harvesting Systems." IEEE Transactions on Instrumentation and Measurement 69, no. 10 (October 2020): 7513–21. http://dx.doi.org/10.1109/tim.2020.2984145.

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11

Knoester, Jasper, and Siegfried Daehne. "Prospects of Artificial Light Harvesting Systems: An Introduction." International Journal of Photoenergy 2006 (2006): 1–3. http://dx.doi.org/10.1155/ijp/2006/54638.

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12

Chen, Yingying, Bo Liu, Hongbo Liu, and Yudong Yao. "VLC-based Data Transfer and Energy Harvesting Mobile System." Journal of Ubiquitous Systems and Pervasive Networks 15, no. 01 (March 1, 2021): 01–09. http://dx.doi.org/10.5383/juspn.15.01.001.

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This paper explores a low-cost portable visible light communication (VLC) system to support the increasing needs of lightweight mobile applications. VLC grows rapidly in the past decade for many applications (e.g., indoor data transmission, human sensing, and visual MIMO) due to its RF interference immunity and inherent high security. However, most existing VLC systems heavily rely on fixed infrastructures with less adaptability to emerging lightweight mobile applications. This work proposes Light Storage, a portable VLC system takes the advantage of commercial smartphone flashlights as the transmitter and a solar panel equipped with both data reception and energy harvesting modules as the receiver. Light Storage can achieve concurrent data transmission and energy harvesting from the visible light signals. It develops multi-level light intensity data modulation to increase data throughput and integrates the noise reduction functionality to allow portability under various lighting conditions. The system supports synchronization together with adaptive error correction to overcome both the linear and non-linear signal offsets caused by the low time-control ability from the commercial smartphones. Finally, the energy harvesting capability in Light Storage provides sufficient energy support for efficient short range communication. Light Storage is validated in both indoor and outdoor environments and can achieve over 98% data decoding accuracy, demonstrating the potential as an important alternative to support low-cost and portable short range communication.

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13

Badu, Shyam, Roderick Melnik, and Sundeep Singh. "Analysis of Photosynthetic Systems and Their Applications with Mathematical and Computational Models." Applied Sciences 10, no. 19 (September 29, 2020): 6821. http://dx.doi.org/10.3390/app10196821.

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In biological and life science applications, photosynthesis is an important process that involves the absorption and transformation of sunlight into chemical energy. During the photosynthesis process, the light photons are captured by the green chlorophyll pigments in their photosynthetic antennae and further funneled to the reaction center. One of the most important light harvesting complexes that are highly important in the study of photosynthesis is the membrane-attached Fenna–Matthews–Olson (FMO) complex found in the green sulfur bacteria. In this review, we discuss the mathematical formulations and computational modeling of some of the light harvesting complexes including FMO. The most recent research developments in the photosynthetic light harvesting complexes are thoroughly discussed. The theoretical background related to the spectral density, quantum coherence and density functional theory has been elaborated. Furthermore, details about the transfer and excitation of energy in different sites of the FMO complex along with other vital photosynthetic light harvesting complexes have also been provided. Finally, we conclude this review by providing the current and potential applications in environmental science, energy, health and medicine, where such mathematical and computational studies of the photosynthesis and the light harvesting complexes can be readily integrated.

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14

Olejko, L., and I. Bald. "FRET efficiency and antenna effect in multi-color DNA origami-based light harvesting systems." RSC Advances 7, no. 39 (2017): 23924–34. http://dx.doi.org/10.1039/c7ra02114c.

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Artificial light harvesting complexes find applications in photosynthesis, photovoltaics and chemical sensors. Here, we present the characterization and optimization of a multi-color artificial light harvesting system on DNA origami structures.

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15

Bentz, Jonathan L., Fatemeh Niroomand Hosseini, and John J. Kozak. "Influence of geometry on light harvesting in dendrimeric systems." Chemical Physics Letters 370, no. 3-4 (March 2003): 319–26. http://dx.doi.org/10.1016/s0009-2614(03)00108-8.

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16

Heřman, Pavel, Ulrich Kleinekathöfer, Ivan Barvı́k, and Michael Schreiber. "Exciton scattering in light-harvesting systems of purple bacteria." Journal of Luminescence 94-95 (December 2001): 447–50. http://dx.doi.org/10.1016/s0022-2313(01)00334-9.

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17

Li, Wei-Jian, Xu-Qing Wang, Wei Wang, Zhubin Hu, Yubin Ke, Hanqiu Jiang, Chunyong He, et al. "Dynamic artificial light-harvesting systems based on rotaxane dendrimers." Giant 2 (June 2020): 100020. http://dx.doi.org/10.1016/j.giant.2020.100020.

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18

Somsen, Oscar J. G., Vladimir Chernyak, Raoul N. Frese, Rienk van Grondelle, and Shaul Mukamel. "Excitonic Interactions and Stark Spectroscopy of Light Harvesting Systems." Journal of Physical Chemistry B 102, no. 44 (October 1998): 8893–908. http://dx.doi.org/10.1021/jp981114o.

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19

Saga, Yoshitaka, and Hitoshi Tamiaki. "Fluorescence Spectroscopy of Single Photosynthetic Light-Harvesting Supramolecular Systems." Cell Biochemistry and Biophysics 40, no. 2 (2004): 149–65. http://dx.doi.org/10.1385/cbb:40:2:149.

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20

Hu, Yi‐Xiong, Wei‐Jian Li, Pei‐Pei Jia, Xu‐Qing Wang, Lin Xu, and Hai‐Bo Yang. "Supramolecular Artificial Light‐Harvesting Systems with Aggregation‐Induced Emission." Advanced Optical Materials 8, no. 14 (June 5, 2020): 2000265. http://dx.doi.org/10.1002/adom.202000265.

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21

Kobuke, Yoshiaki. "Artificial Light-Harvesting Systems by Use of Metal Coordination." European Journal of Inorganic Chemistry 2006, no. 12 (June 2006): 2333–51. http://dx.doi.org/10.1002/ejic.200600161.

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22

Schlau-Cohen, Gabriela S., and Graham R. Fleming. "Structure, Dynamics, and Function in the Major Light-Harvesting Complex of Photosystem II." Australian Journal of Chemistry 65, no. 6 (2012): 583. http://dx.doi.org/10.1071/ch12022.

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In natural light-harvesting systems, pigment-protein complexes (PPC) convert sunlight to chemical energy with near unity quantum efficiency. PPCs exhibit emergent properties that cannot be simply extrapolated from knowledge of their component parts. In this Perspective, we examine the design principles of PPCs, focussing on the major light-harvesting complex of Photosystem II (LHCII), the most abundant PPC in green plants. Studies using two-dimensional electronic spectroscopy (2DES) provide an incisive tool to probe the electronic, energetic, and spatial landscapes that enable the efficiency observed in photosynthetic light-harvesting. Using the information about energy transfer pathways, quantum effects, and excited state geometry contained within 2D spectra, the excited state properties can be linked back to the molecular structure. This understanding of the structure-function relationships of natural systems constitutes a step towards a blueprint for the construction of artificial light-harvesting devices that can reproduce the efficacy of natural systems.

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23

Schlau-Cohen, G. S. "Principles of light harvesting from single photosynthetic complexes." Interface Focus 5, no. 3 (June 6, 2015): 20140088. http://dx.doi.org/10.1098/rsfs.2014.0088.

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Photosynthetic systems harness sunlight to power most life on Earth. In the initial steps of photosynthetic light harvesting, absorbed energy is converted to chemical energy with near-unity quantum efficiency. This is achieved by an efficient, directional and regulated flow of energy through a network of proteins. Here, we discuss the following three key principles of this flow and of photosynthetic light harvesting: thermal fluctuations of the protein structure; intrinsic conformational switches with defined functional consequences; and environmentally triggered conformational switches. Through these principles, photosynthetic systems balance two types of operational costs: metabolic costs, or the cost of maintaining and running the molecular machinery, and opportunity costs, or the cost of losing any operational time. Understanding how the molecular machinery and dynamics are designed to balance these costs may provide a blueprint for improved artificial light-harvesting devices. With a multi-disciplinary approach combining knowledge of biology, this blueprint could lead to low-cost and more effective solar energy conversion. Photosynthetic systems achieve widespread light harvesting across the Earth's surface; in the face of our growing energy needs, this is functionality we need to replicate, and perhaps emulate.

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24

Ishida, Yohei. "Manipulation of supramolecular 2D assembly of functional dyes toward artificial light-harvesting systems." Pure and Applied Chemistry 87, no. 1 (January 1, 2015): 3–14. http://dx.doi.org/10.1515/pac-2014-0906.

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AbstractIn recent years, excellent research has revealed that light-harvesting systems (LHSs) are composed of beautifully aligned chlorophyll molecules; the regulated alignment of chlorophylls is responsible for the efficient and selective light-harvesting energy transfer processes in purple bacteria. This finding led to the construction of a regularly arranged assembly of functional dyes as a step toward fabricating artificial LHSs. While most approaches toward the construction of dye assemblies have depended on molecular interactions such as covalent, coordination, and hydrogen bonds, my approach involves guest–host interactions using an inorganic nanosheet as the host material. This short review presents the construction of a 2D dye assembly and its effective utilization in artificial light-harvesting applications. Owing to the highly stable and uniform 2D alignment of functional dyes on inorganic nanosheets, nearly 100 % singlet–singlet energy transfer and efficient light-harvesting were achieved. I believe that the results presented herein will contribute to the construction of efficient photochemical reaction systems in supramolecular host–guest assemblies, which may facilitate the realization of artificial photosynthesis.

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25

Laos, Alistair J., Paul M. G. Curmi, and Pall Thordarson. "Quantum Coherence and its Impact on Biomimetic Light-Harvesting." Australian Journal of Chemistry 67, no. 5 (2014): 729. http://dx.doi.org/10.1071/ch14054.

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The survival of all photosynthetic organisms relies on the initial light harvesting step, and thus, after ~3 billion years of evolution energy capture and transfer has become a highly efficient and effective process. Here we examine the latest developments on understanding light harvesting, particularly in systems that exhibit an ultrafast energy transfer mechanism known as quantum coherence. With increasing knowledge of the structural and function parameters that produce quantum coherence in photosynthetic organisms, we can begin to replicate this process through biomimetic systems providing a faster and more efficient approach to harvesting and storing solar power for the worlds energy needs. Importantly, synthetic systems that display signs of quantum coherence have also been created and the first design principles for synthetic systems utilising quantum coherence are beginning to emerge. Recent claims that quantum coherence also plays a key role in ultrafast charge-separation highlights the importance for chemists, biologists, and material scientists to work more closely together to uncover the role of quantum coherence in photosynthesis and solar energy research.

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26

Yukihira, Nao, Yuko Sugai, Masazumi Fujiwara, Daisuke Kosumi, Masahiko Iha, Kazuhiko Sakaguchi, Shigeo Katsumura, Alastair T. Gardiner, Richard J. Cogdell, and Hideki Hashimoto. "Strategies to enhance the excitation energy-transfer efficiency in a light-harvesting system using the intra-molecular charge transfer character of carotenoids." Faraday Discussions 198 (2017): 59–71. http://dx.doi.org/10.1039/c6fd00211k.

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Fucoxanthin is a carotenoid that is mainly found in light-harvesting complexes from brown algae and diatoms. Due to the presence of a carbonyl group attached to polyene chains in polar environments, excitation produces an excited intra-molecular charge transfer. This intra-molecular charge transfer state plays a key role in the highly efficient (∼95%) energy-transfer from fucoxanthin to chlorophyllain the light-harvesting complexes from brown algae. In purple bacterial light-harvesting systems the efficiency of excitation energy-transfer from carotenoids to bacteriochlorophylls depends on the extent of conjugation of the carotenoids. In this study we were successful, for the first time, in incorporating fucoxanthin into a light-harvesting complex 1 from the purple photosynthetic bacterium,Rhodospirillum rubrumG9+ (a carotenoidless strain). Femtosecond pump-probe spectroscopy was applied to this reconstituted light-harvesting complex in order to determine the efficiency of excitation energy-transfer from fucoxanthin to bacteriochlorophyllawhen they are bound to the light-harvesting 1 apo-proteins.

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27

Dubey, Rajeev K., Damla Inan, Sanchita Sengupta, Ernst J. R. Sudhölter, Ferdinand C. Grozema, and Wolter F. Jager. "Tunable and highly efficient light-harvesting antenna systems based on 1,7-perylene-3,4,9,10-tetracarboxylic acid derivatives." Chemical Science 7, no. 6 (2016): 3517–32. http://dx.doi.org/10.1039/c6sc00386a.

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28

Solladié, Nathalie, Régis Rein, and Mathieu Walther. "Light harvesting porphyrin-crown ether conjugates: toward artificial photosynthetic systems." Journal of Porphyrins and Phthalocyanines 11, no. 05 (May 2007): 375–82. http://dx.doi.org/10.1142/s1088424607000424.

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In this paper we report on our ongoing progress in the preparation of artificial photosynthetic systems through the preparation of light harvesting multi-porphyrins. The synthesis of these antennae is described herein and the energy transfer capabilities of these devices demonstrated. A terminal porphyrin/crown ether conjugate has been maintained in each case to ensure a coordination site for the complexation of an ammonium/ C 60 derivative, which could be chosen as the electron acceptor partner for the preparation of artificial photosynthetic systems.

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29

Kunugi, Motoshi, Soichirou Satoh, Kunio Ihara, Kensuke Shibata, Yukimasa Yamagishi, Kazuhiro Kogame, Junichi Obokata, Atsushi Takabayashi, and Ayumi Tanaka. "Evolution of Green Plants Accompanied Changes in Light-Harvesting Systems." Plant and Cell Physiology 57, no. 6 (April 6, 2016): 1231–43. http://dx.doi.org/10.1093/pcp/pcw071.

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30

Monshouwer, René, Malin Abrahamsson, Frank van Mourik, and Rienk van Grondelle. "Superradiance and Exciton Delocalization in Bacterial Photosynthetic Light-Harvesting Systems." Journal of Physical Chemistry B 101, no. 37 (September 1997): 7241–48. http://dx.doi.org/10.1021/jp963377t.

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31

Bonaccorsi, Paola, Maria Chiara Aversa, Anna Barattucci, Teresa Papalia, Fausto Puntoriero, and Sebastiano Campagna. "Artificial light-harvesting antenna systems grafted on a carbohydrate platform." Chemical Communications 48, no. 85 (2012): 10550. http://dx.doi.org/10.1039/c2cc35555h.

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32

Kriete, Björn, Anna S. Bondarenko, Riccardo Alessandri, Ilias Patmanidis, Victor V. Krasnikov, Thomas L. C. Jansen, Siewert J. Marrink, Jasper Knoester, and Maxim S. Pshenichnikov. "Molecular versus Excitonic Disorder in Individual Artificial Light-Harvesting Systems." Journal of the American Chemical Society 142, no. 42 (September 26, 2020): 18073–85. http://dx.doi.org/10.1021/jacs.0c07392.

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33

Scholes, Gregory D. "Designing light-harvesting antenna systems based on superradiant molecular aggregates." Chemical Physics 275, no. 1-3 (January 2002): 373–86. http://dx.doi.org/10.1016/s0301-0104(01)00533-x.

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34

Kume, Atsushi, Tomoko Akitsu, and Kenlo Nishida Nasahara. "Why is chlorophyll b only used in light-harvesting systems?" Journal of Plant Research 131, no. 6 (July 10, 2018): 961–72. http://dx.doi.org/10.1007/s10265-018-1052-7.

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Abstract Chlorophylls (Chl) are important pigments in plants that are used to absorb photons and release electrons. There are several types of Chls but terrestrial plants only possess two of these: Chls a and b. The two pigments form light-harvesting Chl a/b-binding protein complexes (LHC), which absorb most of the light. The peak wavelengths of the absorption spectra of Chls a and b differ by c. 20 nm, and the ratio between them (the a/b ratio) is an important determinant of the light absorption efficiency of photosynthesis (i.e., the antenna size). Here, we investigated why Chl b is used in LHCs rather than other light-absorbing pigments that can be used for photosynthesis by considering the solar radiation spectrum under field conditions. We found that direct and diffuse solar radiation (PARdir and PARdiff, respectively) have different spectral distributions, showing maximum spectral photon flux densities (SPFD) at c. 680 and 460 nm, respectively, during the daytime. The spectral absorbance spectra of Chls a and b functioned complementary to each other, and the absorbance peaks of Chl b were nested within those of Chl a. The absorption peak in the short wavelength region of Chl b in the proteinaceous environment occurred at c. 460 nm, making it suitable for absorbing the PARdiff, but not suitable for avoiding the high spectral irradiance (SIR) waveband of PARdir. In contrast, Chl a effectively avoided the high SPFD and/or high SIR waveband. The absorption spectra of photosynthetic complexes were negatively correlated with SPFD spectra, but LHCs with low a/b ratios were more positively correlated with SIR spectra. These findings indicate that the spectra of the photosynthetic pigments and constructed photosystems and antenna proteins significantly align with the terrestrial solar spectra to allow the safe and efficient use of solar radiation.

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35

Pachón, Leonardo A., Juan D. Botero, and Paul Brumer. "Open system perspective on incoherent excitation of light-harvesting systems." Journal of Physics B: Atomic, Molecular and Optical Physics 50, no. 18 (September 4, 2017): 184003. http://dx.doi.org/10.1088/1361-6455/aa8696.

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36

Xiao, Tangxin, Weiwei Zhong, Ling Zhou, Lixiang Xu, Xiao-Qiang Sun, Robert B. P. Elmes, Xiao-Yu Hu, and Leyong Wang. "Artificial light-harvesting systems fabricated by supramolecular host–guest interactions." Chinese Chemical Letters 30, no. 1 (January 2019): 31–36. http://dx.doi.org/10.1016/j.cclet.2018.05.034.

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37

Chen, Peng-Zhong, Yu-Xiang Weng, Li-Ya Niu, Yu-Zhe Chen, Li-Zhu Wu, Chen-Ho Tung, and Qing-Zheng Yang. "Light-Harvesting Systems Based on Organic Nanocrystals To Mimic Chlorosomes." Angewandte Chemie International Edition 55, no. 8 (January 22, 2016): 2759–63. http://dx.doi.org/10.1002/anie.201510503.

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38

Chen, Peng-Zhong, Yu-Xiang Weng, Li-Ya Niu, Yu-Zhe Chen, Li-Zhu Wu, Chen-Ho Tung, and Qing-Zheng Yang. "Light-Harvesting Systems Based on Organic Nanocrystals To Mimic Chlorosomes." Angewandte Chemie 128, no. 8 (January 21, 2016): 2809–13. http://dx.doi.org/10.1002/ange.201510503.

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39

Kumar, Atul, Rupak Saha, and Partha Sarathi Mukherjee. "Self-assembled metallasupramolecular cages towards light harvesting systems for oxidative cyclization." Chemical Science 12, no. 14 (2021): 5319–29. http://dx.doi.org/10.1039/d1sc00097g.

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Synthesis of Pt(ii) based metallacages as aggregation induced emissive supramolecular architectures for fabricating artificial light harvesting systems for cross coupling cyclization under visible light is achieved.

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40

Xie, Xiaojiang, and Eric Bakker. "Creating electrochemical gradients by light: from bio-inspired concepts to photoelectric conversion." Phys. Chem. Chem. Phys. 16, no. 37 (2014): 19781–89. http://dx.doi.org/10.1039/c4cp02566k.

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41

McCormick, Alistair J., Paolo Bombelli, Robert W. Bradley, Rebecca Thorne, Tobias Wenzel, and Christopher J. Howe. "Biophotovoltaics: oxygenic photosynthetic organisms in the world of bioelectrochemical systems." Energy & Environmental Science 8, no. 4 (2015): 1092–109. http://dx.doi.org/10.1039/c4ee03875d.

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42

Kim, Eunchul, Hisako Kubota-Kawai, Fumihiro Kawai, Makio Yokono, and Jun Minagawa. "Regulation of light-harvesting systems in plants: Flexible conformation of light-harvesting complex II trimer depending on its binding site." Biophysical Journal 122, no. 3 (February 2023): 242a. http://dx.doi.org/10.1016/j.bpj.2022.11.1411.

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43

Zekri, Wafaa Abd El-Basit. "Photovoltaic Modules for Indoor Energy Harvesting." JOURNAL OF ADVANCES IN PHYSICS 14, no. 1 (March 7, 2018): 5222–31. http://dx.doi.org/10.24297/jap.v14i1.7063.

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This paper presents the performance of indoor energy harvesting systems based on different photovoltaic modules (monocrystalline silicon, polycrystalline silicon, amorphous silicon and polymer) and artificial electric lighting sources (incandescent, fluorescent and cool white flood LED). In this concern, it is clearly proved that, maximum output power densities to be harvested from the photovoltaic module depends mainly on the spectral responses of both the light source and the module material. Herein, and from the study, experimental work, results and analysis, it is clear that monocrystalline silicon is the optimum solution for all light sources, followed by polycrystalline, whenever used with spot-and incandescent - lamps. On the other hand, amorphous samples were proved to be lightly sensitive to fluorescent light and cool white flood LED. Finally, polymer samples were weakly responded whenever exposed to any of the investigated light sources.

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44

Vaswani, Harsha M., Nancy E. Holt, and Graham R. Fleming. "Carotenoid-chlorophyll complexes: Ready-to-harvest." Pure and Applied Chemistry 77, no. 6 (January 1, 2005): 925–45. http://dx.doi.org/10.1351/pac200577060925.

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The fundamental interactions between naturally occurring pigments in light-harvesting systems are responsible for the high efficiency of the photosynthetic apparatus. We describe the role of carotenoids (Cars) in light-harvesting systems, including our work elucidating the mechanism of energy transfer from the optically dark Car singlet excited state (S1) to chlorophyll (Chl) and calculations on the electronic structure of Cars by means of time-dependent density functional theory (TDDFT). We highlight new studies on the charge-transfer state of the Car, peridinin (Per), which enhances the light-harvesting efficiency of the Car by increasing the electronic coupling to Chl. The role of another Car, zeaxanthin (Zea), is discussed with respect to its role in the mechanism of the feedback deexcitation quenching in green plants, a vital regulation process under light conditions which exceed photosynthetic capacity. Lastly, we provide insight on how the 96 Chls in Photosystem I are optimized to generate a pigment-protein complex which utilizes solar energy with near unit efficiency.

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45

Zheng, Fulu, Lipeng Chen, Jianbo Gao, and Yang Zhao. "Fully Quantum Modeling of Exciton Diffusion in Mesoscale Light Harvesting Systems." Materials 14, no. 12 (June 14, 2021): 3291. http://dx.doi.org/10.3390/ma14123291.

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It has long been a challenge to accurately and efficiently simulate exciton–phonon dynamics in mesoscale photosynthetic systems with a fully quantum mechanical treatment due to extensive computational resources required. In this work, we tackle this seemingly intractable problem by combining the Dirac–Frenkel time-dependent variational method with Davydov trial states and implementing the algorithm in graphic processing units. The phonons are treated on the same footing as the exciton. Tested with toy models, which are nanoarrays of the B850 pigments from the light harvesting 2 complexes of purple bacteria, the methodology is adopted to describe exciton diffusion in huge systems containing more than 1600 molecules. The superradiance enhancement factor extracted from the simulations indicates an exciton delocalization over two to three pigments, in agreement with measurements of fluorescence quantum yield and lifetime in B850 systems. With fractal analysis of the exciton dynamics, it is found that exciton transfer in B850 nanoarrays exhibits a superdiffusion component for about 500 fs. Treating the B850 ring as an aggregate and modeling the inter-ring exciton transfer as incoherent hopping, we also apply the method of classical master equations to estimate exciton diffusion properties in one-dimensional (1D) and two-dimensional (2D) B850 nanoarrays using derived analytical expressions of time-dependent excitation probabilities. For both coherent and incoherent propagation, faster energy transfer is uncovered in 2D nanoarrays than 1D chains, owing to availability of more numerous propagating channels in the 2D arrangement.

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46

Zloshchastiev, Konstantin G. "Is sustainability of light-harvesting and waveguiding systems a quantum phenomenon?" Journal of Physics: Conference Series 1276 (August 2019): 012052. http://dx.doi.org/10.1088/1742-6596/1276/1/012052.

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Acharyya, Koushik, Soumalya Bhattacharyya, Hajar Sepehrpour, Shubhadip Chakraborty, Shuai Lu, Bingbing Shi, Xiaopeng Li, Partha Sarathi Mukherjee, and Peter J. Stang. "Self-Assembled Fluorescent Pt(II) Metallacycles as Artificial Light-Harvesting Systems." Journal of the American Chemical Society 141, no. 37 (September 3, 2019): 14565–69. http://dx.doi.org/10.1021/jacs.9b08403.

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Hashimoto, Hideki, Yuko Sugai, Chiasa Uragami, Alastair T. Gardiner, and Richard J. Cogdell. "Natural and artificial light-harvesting systems utilizing the functions of carotenoids." Journal of Photochemistry and Photobiology C: Photochemistry Reviews 25 (December 2015): 46–70. http://dx.doi.org/10.1016/j.jphotochemrev.2015.07.004.

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Vengris, Mikas, Delmar S. Larsen, Leonas Valkunas, Gerdenis Kodis, Christian Herrero, Devens Gust, Thomas Moore, Ana Moore, and Rienk van Grondelle. "Separating Annihilation and Excitation Energy Transfer Dynamics in Light Harvesting Systems." Journal of Physical Chemistry B 117, no. 38 (May 28, 2013): 11372–82. http://dx.doi.org/10.1021/jp403301c.

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Zheng, Kaibo, Khadga Karki, Karel Žídek, and Tõnu Pullerits. "Ultrafast photoinduced dynamics in quantum dot-based systems for light harvesting." Nano Research 8, no. 7 (May 7, 2015): 2125–42. http://dx.doi.org/10.1007/s12274-015-0751-9.

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