Download or read book Solar Energy Harvesting with Photosynthetic Pigment Protein Complexes written by Sai Kishore Ravi and published by Springer Nature. This book was released on 2020-08-24 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book chronicles a few approaches to constructing biohybrid devices using photosynthetic protein complexes. Can the abundantly available solar energy be tapped to meet our rising energy demands using green and cheap active materials? Exploring nature’s own tiny solar factories, the photosynthetic proteins could hold the key. Photosynthetic pigment-protein complexes found in plants and certain types of bacteria transduce sunlight into biologically useful forms of energy through a photochemical charge separation that has a 100% quantum efficiency. Getting the photoproteins to perform this efficient energy conversion reaction in a semi-artificial setup is central to developing biohybrid solar technologies, a promising green alternative to today’s photovoltaics. This book looks into the existing challenges and opportunities in the field of biohybrid photovoltaics and provides a few prospective methods of enhancing the photocurrent and photovoltage in these devices. The book targets the readership of students, academics, and industrial practitioners who are interested in alternative solar technologies.
Download or read book Multiscale Modeling of Pigment protein Assemblies written by Sándor Ádám Kovács and published by . This book was released on 2012 with total page 117 pages. Available in PDF, EPUB and Kindle. Book excerpt: Beginning with a review of the photosynthetic energy capture and energy transfer mechanisms of green sulfur bacteria in the context of efficient solar energy harvesting, limitations in the current understanding of these complexes are identified in the first chapter. Specifically, the lack of a complete structural model for light harvesting in green sulfur bacteria at the atomic scale prevents a thorough understanding of energy transfer and forms the basis for questions which comprise the main effort of the dissertation, the solution of which necessitates the use of a multiscale computational approach described in the second chapter. Because individual aspects of these systems such as small-scale protein-ligand interactions require different treatments than larger-scale protein-protein interactions, each component of the extensive multiscale computational methodology is introduced with an emphasis on the information gained as well as the relevant length and timescales. The resulting interactions between photosynthetic pigments and proteins in the model system Chlorobaculum tepidum (formerly Chlorobium tepidum)--including predicted binding motifs for Bacteriochlorophyll a (BChl a) to the chlorosome protein a (CsmA protein), for the CsmA protein to itself to form a dimer, and for the CsmA protein to the Fenna-Matthew-Olson (FMO) protein-are each presented, quantified, and explained in the middle chapters. Finally, implications for future computational studies and closing thoughts are discussed in the final chapter.
Download or read book Integration of Photosynthetic Pigment protein Complexes in Dye Sensitized Solar Cells Towards Plasmonic enhanced Biophotovoltaics written by Yiqun Yang and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Solar energy as a sustainable resource is a promising alternative to fossil fuels to solve the tremendous global energy crisis. Development of three generation of solar cells has promoted the best sunlight to electricity conversion efficiency above 40%. However, the most efficient solar cells rely on expensive nonsustainable raw materials in device fabrication. There is a trend to develop cost-effective biophotovoltaics that combines natural photosynthetic systems into artificial energy conversion devices such as dye sensitized solar cells (DSSCs). In this research, a model system employs natural extract light-harvesting complex II (LHCII) as a light-absorbing sensitizer to interface with semiconductive TiO2 and plasmonic nanoparticles in DSSCs. The goal of this research is to understand the fundamental photon capture, energy transfer and charge separation processes of photosynthetic pigment-protein complexes along with improving biophotovoltaic performance based on this model system through tailoring engineering of TiO2 nanostructures, attaching of the complexes, and incorporating plasmonic enhancement. The first study reports a novel approach to linking the spectroscopic properties of nanostructured LHCII with the photovoltaic performance of LHCII-sensitized solar cells (LSSCs). The aggregation allowed reorganization between individual trimers which dramatically increased the photocurrent, correlating well with the formation of charge-transfer (CT) states observed by absorption and fluorescence spectroscopy. The assembled solar cells demonstrated remarkable stability in both aqueous buffer and acetonitrile electrolytes over 30 days after LHCII being electrostatically immobilized on amine-functionalized TiO2 surface. The motivation of the second study is to get insights into the plasmonic effects on the nature of energy/charge transfer processes at the interface of photosynthetic protein complexes and artificial photovoltaic materials. Three types of core-shell (metal@TiO2) plasmonic nanoparticles (PNPs) were conjugated with LHCII trimers to form hybrid systems and incorporated into a DSSC platform built on a unique open three-dimensional (3D) photoanode consisting of TiO2 nanotrees. Enhanced photon harvesting capability, more efficient energy transfer and charge separation at the LHCII/TiO2 interface were confirmed in the LHCII-PNP hybrids, as revealed by spectroscopic and photovoltaic measurements, demonstrating that interfacing photosynthesis systems with specific artificial materials is a promising approach for high-performance biosolar cells. Furthermore, the final study reveals the mechanism of hot electron injection by employing a mesoporous core-shell (Au@TiO2) network as a bridge material on a micro-gap electrode to conduct electricity under illumination and comparing the photoconductance to the photovolatic properties of the same material as photoanodes in DSSCs. Based on the correlation of the enhancements in photoconductance and photovoltaics, the contribution of hot electrons was deconvoluted from the plasmonic near-field effects.
Download or read book Photosynthetic Protein Based Photovoltaics written by Swee Ching Tan and published by CRC Press. This book was released on 2018-09-03 with total page 255 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ever since the discovery of the photoelectric effect, researchers have been trying to improve the efficiency of converting sunlight into electricity through photovoltaic devices. Photosynthetic organisms provide clues for harvesting sunlight and storing the energy in chemical forms. This book offers a concise overview of the fundamental concepts of photosynthesis and the emerging photovoltaic technologies, casting light on the symbiotic relation between these spheres of science. Although there are many books about the fundamentals of photosynthesis and the various aspects of the photosynthetic processes, this is the first volume to focus on the prospects of studying the photosynthetic proteins, understanding and applying their properties to design prospective solar energy conversion devices that are sustainable and efficient. All in all, the book aims to bring together the present know-how on organic photovoltaics and dye-sensitized solar cells with that of the emerging bio-photovoltaics and the underlying physics of photosynthesis to foster a more eclectic research that would converge towards a sustainable energy technology for the future. The book mainly serves as a bridge to connect biochemists, who study photosynthetic proteins, and physicists and engineers who design and develop photovoltaic devices. Scientists, engineers and students in the fields of photosynthetic research and solar energy research can use this book as a ready reference. Key selling features: Covers both methods and bio-based materials needed to build bio-based photovoltaics Focuses on both techniques and applications Summarizes the advantages and limitations of various techniques Contributors from multiple disciplines integrate the knowledge of photosynthetic proteins and the physics/engineering of photovoltaic devices. Includes adaptive designs and techniques used in other types of solar cells to for the design of protein-based PVs
Download or read book Photosynthetic Protein Based Photovoltaics written by Swee Ching Tan and published by CRC Press. This book was released on 2018-09-03 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ever since the discovery of the photoelectric effect, researchers have been trying to improve the efficiency of converting sunlight into electricity through photovoltaic devices. Photosynthetic organisms provide clues for harvesting sunlight and storing the energy in chemical forms. This book offers a concise overview of the fundamental concepts of photosynthesis and the emerging photovoltaic technologies, casting light on the symbiotic relation between these spheres of science. Although there are many books about the fundamentals of photosynthesis and the various aspects of the photosynthetic processes, this is the first volume to focus on the prospects of studying the photosynthetic proteins, understanding and applying their properties to design prospective solar energy conversion devices that are sustainable and efficient. All in all, the book aims to bring together the present know-how on organic photovoltaics and dye-sensitized solar cells with that of the emerging bio-photovoltaics and the underlying physics of photosynthesis to foster a more eclectic research that would converge towards a sustainable energy technology for the future. The book mainly serves as a bridge to connect biochemists, who study photosynthetic proteins, and physicists and engineers who design and develop photovoltaic devices. Scientists, engineers and students in the fields of photosynthetic research and solar energy research can use this book as a ready reference. Key selling features: Covers both methods and bio-based materials needed to build bio-based photovoltaics Focuses on both techniques and applications Summarizes the advantages and limitations of various techniques Contributors from multiple disciplines integrate the knowledge of photosynthetic proteins and the physics/engineering of photovoltaic devices. Includes adaptive designs and techniques used in other types of solar cells to for the design of protein-based PVs
Download or read book Photosynthesis in silico written by Agu Laisk and published by Springer Science & Business Media. This book was released on 2009-06-19 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt: Photosynthesis in silico: Understanding Complexity from Molecules to Ecosystems is a unique book that aims to show an integrated approach to the understanding of photosynthesis processes. In this volume - using mathematical modeling - processes are described from the biophysics of the interaction of light with pigment systems to the mutual interaction of individual plants and other organisms in canopies and large ecosystems, up to the global ecosystem issues. Chapters are written by 44 international authorities from 15 countries. Mathematics is a powerful tool for quantitative analysis. Properly programmed, contemporary computers are able to mimic complicated processes in living cells, leaves, canopies and ecosystems. These simulations - mathematical models - help us predict the photosynthetic responses of modeled systems under various combinations of environmental conditions, potentially occurring in nature, e.g., the responses of plant canopies to globally increasing temperature and atmospheric CO2 concentration. Tremendous analytical power is needed to understand nature's infinite complexity at every level.
Download or read book Science Technology on Bio hylic and Biomass Resources in China A Roadmap to 2050 written by Xinshi Zhang and published by Springer Science & Business Media. This book was released on 2010-08-09 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: As one of the eighteen field-specific reports comprising the comprehensive scope of the strategic general report of the Chinese Academy of Sciences, this sub-report addresses long-range planning for developing science and technology in the field of bio-hylic and biomass resources. They each craft a roadmap for their sphere of development to 2050. In their entirety, the general and sub-group reports analyze the evolution and laws governing the development of science and technology, describe the decisive impact of science and technology on the modernization process, predict that the world is on the eve of an impending S&T revolution, and call for China to be fully prepared for this new round of S&T advancement. Based on the detailed study of the demands on S&T innovation in China's modernization, the reports draw a framework for eight basic and strategic systems of socio-economic development with the support of science and technology, work out China's S&T roadmaps for the relevant eight basic and strategic systems in line with China's reality, further detail S&T initiatives of strategic importance to China's modernization, and provide S&T decision-makers with comprehensive consultations for the development of S&T innovation consistent with China's reality. Supported by illustrations and tables of data, the reports provide researchers, government officials and entrepreneurs with guidance concerning research directions, the planning process, and investment. Founded in 1949, the Chinese Academy of Sciences is the nation's highest academic institution in natural sciences. Its major responsibilities are to conduct research in basic and technological sciences, to undertake nationwide integrated surveys on natural resources and ecological environment, to provide the country with scientific data and consultations for government's decision-making, to undertake government-assigned projects with regard to key S&T problems in the process of socio-economic development, to initiate personnel training, and to promote China's high-tech enterprises through its active engagement in these areas.
Download or read book Photosynthesis Molecular Approaches to Solar Energy Conversion written by Jian-Ren Shen and published by Springer Nature. This book was released on 2021-09-09 with total page 646 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the modern world, to meet increasing energy demands we need to develop new technologies allowing us to use eco-friendly carbon-neutral energy sources. Solar energy as the most promising renewable source could be the way to solve that problem, but it is variable depending on day time and season. From this side, the understanding of photosynthesis process could be of significant help for us to develop effective strategies of solar energy capturing, conversion, and storage. Plants, algae, and cyanobacteria perform photosynthesis, annually producing around 100 billion tons of dry biomass. Presently, the detailed studies of photosynthetic system structure make functional investigations of the photosynthetic process available, allowing scientists to construct artificial systems for solar energy transduction. This book summarizes exciting achievements in understanding of photosynthetic structures and mechanisms of this process made by world leaders in photosynthesis field, and contains information about modern ideas in development of revolutionary new technologies of energy conversion. Organized according to the natural sequence of events occurring during photosynthesis, the book includes information of both photosynthetic structures and mechanisms and its applications in bioenergetics issues.
Download or read book Microbial Responses to Light and Time written by Society for General Microbiology. Symposium and published by Cambridge University Press. This book was released on 1998-05-07 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: An up-to-date review of the importance of light as a biologically active environmental cue.
Download or read book Two color Three pulse Photon Echo Studies on the Photosynthetic Bacterial Reaction Center written by Hohjai Lee and published by . This book was released on 2009 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: Photosynthesis begins with absorbing the sun light by the light harvesting complexes. The solar energy is then funneled into the reaction center (RC) via the energy transfer between the light harvesting complexes at ultrafast rates (̃1/100fs) with extremely high quantum efficiency (̃100 %). Most of the complexes are composed of pigments and protein matrices that tightly bind them. The pigments are responsible for absorbing and transferring the energy. The roles of the protein environment of photosynthetic pigment-protein complexes have been suggested, but the detailed mechanisms are still not fully understood. In this dissertation, non-linear spectroscopic methods using ultrashort pulses (̃ 40-fs FWHM), three-pulse photon echo studies are presented to investigate the roles of protein environment of the photosynthetic bacterial RC. The technique characterizes the protein dynamics around the pigments (a bacteriochlorophyll a, B and a bacteriopheophytin a, H) in the RC. In particular, two-color three-pulse electronic coherence photon echo technique is used to observe the quantum coherence between the excited states of coupled H and B, whose life time is sensitive to the protein dynamics. I found a long-lasting quantum coherence suggesting that the protein actively preserves the quantum coherence. A scenario in which the long-lasting coherence can accelerate the rate of energy trap is described with a simple Bloch model simulation. In addition, one- and two-color three-pulse photon echo peak shift (1C- and 2C3PEPS) techniques are used to measure the coupling strength between H and B in the wild type RC. The coupling strength is facilitated from the geometry between the pigments governed by the protein environment. The simulation based on the standard response function formalism is used to obtain the coupling strength. 2C3PEPS signal from H and B of the oxidized RC is reproduced to extract the coupling constant between them by quantum-master equation which efficiently incorporates pulse overlap effect and bath memory effect. The values will enable the molecular level of studies on the photosynthetic energy and electron transfer.
Download or read book Solar to Chemical Conversion written by Hongqi Sun and published by John Wiley & Sons. This book was released on 2021-06-28 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive book systematically covers the fundamentals in solar energy conversion to chemicals, either fuels or chemical products. It includes natural photosynthesis with emphasis on artificial processes for solar energy conversion and utilization. The chemical processes of solar energy conversion via homogeneous and/or heterogeneous photocatalysis has been described with the mechanistic insights. It also consists of reaction systems toward a variety of applications, such as water splitting for hydrogen or oxygen evolution, photocatalytic CO2 reduction to fuels, and light driven N2 fixation, etc. This unique book offers the readers a broad view of solar energy utilization based on chemical processes and their perspectives for future sustainability.
Download or read book Light Harvesting Antennas in Photosynthesis written by B.R. Green and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 533 pages. Available in PDF, EPUB and Kindle. Book excerpt: Light-Harvesting Antennas in Photosynthesis is concerned with the most important process on earth - the harvesting of light energy by photosynthetic organisms. This book provides a comprehensive treatment of all aspects of photosynthetic light-harvesting antennas, from the biophysical mechanisms of light absorption and energy transfer to the structure, biosynthesis and regulation of antenna systems in whole organisms. It sets the great variety of antenna pigment-protein complexes in their evolutionary context and at the same time brings in the latest hi-tech developments. The book is unique in the degree to which it emphasizes the integration of molecular biological, biochemical and biophysical approaches. Overall, a well-organized, understandable, and comprehensive volume. It will be a valuable resource for both graduate students and their professors, and a helpful library reference book for undergraduates.
Download or read book Light Harvesting in Photosynthesis written by Roberta Croce and published by CRC Press. This book was released on 2018-01-12 with total page 793 pages. Available in PDF, EPUB and Kindle. Book excerpt: This landmark collective work introduces the physical, chemical, and biological principles underlying photosynthesis: light absorption, excitation energy transfer, and charge separation. It begins with an introduction to properties of various pigments, and the pigment proteins in plant, algae, and bacterial systems. It addresses the underlying physics of light harvesting and key spectroscopic methods, including data analysis. It discusses assembly of the natural system, its energy transfer properties, and regulatory mechanisms. It also addresses light-harvesting in artificial systems and the impact of photosynthesis on our environment. The chapter authors are amongst the field’s world recognized experts. Chapters are divided into five main parts, the first focused on pigments, their properties and biosynthesis, and the second section looking at photosynthetic proteins, including light harvesting in higher plants, algae, cyanobacteria, and green bacteria. The third part turns to energy transfer and electron transport, discussing modeling approaches, quantum aspects, photoinduced electron transfer, and redox potential modulation, followed by a section on experimental spectroscopy in light harvesting research. The concluding final section includes chapters on artificial photosynthesis, with topics such as use of cyanobacteria and algae for sustainable energy production. Robert Croce is Head of the Biophysics Group and full professor in biophysics of photosynthesis/energy at Vrije Universiteit, Amsterdam. Rienk van Grondelle is full professor at Vrije Universiteit, Amsterdam. Herbert van Amerongen is full professor of biophysics in the Department of Agrotechnology and Food Sciences at Wageningen University, where he is also director of the MicroSpectroscopy Research Facility. Ivo van Stokkum is associate professor in the Department of Physics and Astronomy, Faculty of Sciences, at Vrije Universiteit, Amsterdam.
Download or read book The Biophysics of Photosynthesis written by John Golbeck and published by Springer. This book was released on 2014-08-07 with total page 465 pages. Available in PDF, EPUB and Kindle. Book excerpt: The volume is intended as an introduction to the physical principles governing the main processes that occur in photosynthesis, with emphasis on the light reactions and electron transport chain. A unique feature of the photosynthetic apparatus is the fact that the molecular structures are known in detail for essentially all of its major components. The availability of this data has allowed their functions to be probed at a very fundamental level to discover the design principles that have guided evolution. Other volumes on photosynthesis have tended to focus on single components or on a specific set of biophysical techniques, and the authors’ goal is to provide new researchers with an introduction to the overall field of photosynthesis. The book is divided into sections, each dealing with one of the main physical processes in photosynthetic energy conversion. Each section has several chapters each describing the role that a basic physical property, such as charge or spin, plays in governing the process being discussed. The chapters proceed in an orderly fashion from a quantum mechanical description of early processes on an ultrafast timescale to a classical treatment of electron transfer and catalysis on a biochemical timescale culminating in evolutionary principles on a geological timescale.
Download or read book Perspectives in Photosynthesis written by Joshua Jortner and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Twenty-Second Jerusalem Symposium reflected the high standards of these distinguished scientific meetings, which convene once a year at the Israel Academy of Sciences and Humanities in Jerusalem to discuss a specific topic in the broad area of quantum chemistry and 'biochemistry. The topic at this year's Jerusalem Symposium was Perspectives in Photosynthesis, which constitutes a truly interdisciplinary subject of central interest to biophysicists, and biologists. chemists The main theme of the Symposium was built around a conceptual framework for the acquisition, storage and useful disposal of energy in photosynthetic reaction centres. Emphasis was placed on the elucidation of primary charge separation processes in photosynthesis and their exploration within the framework of the electron transfer theory, on the interrelationship between structural data, inter actions and electron transfer kinetics, and on the role of protein dynamics in primary processes in photosynthesis. The interdisciplinary nature of these research areas was deliberated by intensive and extensive interactions between scientists from different disciplines and between theory and experiment. This volume provides a record of the invited lectures at the Symposium.
Download or read book Biochemical Basis of Plant Breeding written by Carlos A. Neyra and published by CRC Press. This book was released on 2019-07-17 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: First published in 1985: This book presents a comprehensive survey of progress and current knowledge of those biochemical processes with greater potential for the development of superior cultivars: Photosynthesis, photorespiration, nitrate assimilation, biological nitrogen fixation, and starch and protein synthesis.
Download or read book Photosynthesis written by Harvey J.M. Hou and published by Elsevier. This book was released on 2023-07-27 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt: Photosynthesis: From Plants to Nanomaterials in the Nanomaterial-Plant Interactions series, summarizes both the foundational mechanisms and latest advances in photosynthesis. With a strong emphasis on artificial photosynthesis, the book also analyzes the role of nanomaterials in energy production. Starting with an introduction to plant photosynthetic systems, chapters discuss the structure of light harvesting systems, energy transfer and membrane protein complexes. The book later describes the role of nanoparticles in photosynthesis, including agricultural applications, advances in nanobionics, and the impact of engineered nanomaterials. This book is an essential read for researchers and students interested in photosynthesis, bionanotechnology and nanomaterials. Presents the latest advances in plant photosynthesis Discusses the role of nanomaterials in energy production and other photosynthetic mechanisms Highlights nanotechnology and artificial photosynthesis
