Download or read book Resonance Raman Spectroscopic Studies of Porphyrins and Hydroporphyrins written by Milton Evander Blackwood and published by . This book was released on 1997 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Raman Spectroscopic Studies of Porphyrins and Porphyrin protein Complexes written by Colin Richard Lefley and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Porphyrins V3 written by David Dolphin and published by Elsevier. This book was released on 2012-12-02 with total page 655 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Porphyrins, Volume III: Physical Chemistry, Part A deals with the physical chemistry of porphyrins, their precursors, catabolic derivatives, and related systems. The book covers electronic structure and spectroscopy including circular dichroism and magnetic circular dichroism as well as electronic, infrared, resonance Raman, and Zeeman spectroscopy. Porphyrin stereochemistry, X-ray crystallography, and mass spectroscopy are also included. This volume is organized into 12 chapters and begins with an overview of the optical absorption and emission spectra of porphyrins and the theory by which these facts are understood. The discussion then shifts to the electronic states of the iron porphyrin complex in various heme proteins as displayed by the light absorption properties in the visible region of the electromagnetic spectrum. The reader is methodically introduced to the electronic absorption spectra and molecular orbital theory of chlorophylls, the magnetic optical activity of porphyrins and hemoproteins, and circular dichroism studies of hemoproteins. The book also examines the mass spectra and infrared spectroscopy of porphyrins, resonance Raman scattering from metalloporphyrins and hemoproteins, and photographic essay of porphyrins and related macrocycles. It then concludes with a chapter on high-resolution Zeeman spectroscopy of metalloporphyrins. This book should be useful to inorganic, organic, physical, and biochemists interested in the physical chemistry of porphyrins.
Download or read book Resonance Raman Studies and Vibrational Analysis of Ni II Porphyrins written by Xiao-yuan Li and published by . This book was released on 1988 with total page 840 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Approaches to the Conformational Analysis of Biopharmaceuticals written by Roger L. Lundblad and published by CRC Press. This book was released on 2009-12-15 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: The activity of many biopharmaceutical polymers is dependent on conformation, and the next several years will see increased interest in the conformational analysis of these polymers resulting from the development of biosimilar or "follow-on" biological products. While a wide variety of approaches to analysis exists, finding the most viable ones wou
Download or read book Porphyrins Advances in Research and Application 2011 Edition written by and published by ScholarlyEditions. This book was released on 2012-01-09 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: Porphyrins: Advances in Research and Application: 2011 Edition is a ScholarlyEditions™ eBook that delivers timely, authoritative, and comprehensive information about Porphyrins. The editors have built Porphyrins: Advances in Research and Application: 2011 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Porphyrins in this eBook to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Porphyrins: Advances in Research and Application: 2011 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1998 with total page 862 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Porphyrins V2 written by David Dolphin and published by Elsevier. This book was released on 2012-12-02 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Porphyrins, Volume II: Structure and Synthesis, Part B is devoted to the structure and synthesis of porphyrins, their precursors, catabolic derivatives, and related systems. The book also covers nomenclature, history, geochemistry, purification, and structural determination of porphyrins, metalloporphyrins, and mono- and polypyrrolic compounds. This volume is organized into 10 chapters and begins with an overview of hydroporphyrins, paying particular attention to their synthesis and stereochemistry as well as reactivity, spectroscopy, and analogues. This book then discusses the synthesis, properties, thermodynamic stability, and evolution of porphyrinogens. The following chapters focus on porphyrins reversibly modified at the periphery by oxidation (oxophlorins) and by irreversible reactions at the periphery. The synthesis of photoexcited porphyrins, metalloporphyrins, and chlorophylls is covered. In addition, chapters on linear polypyrroles, their metal complexes, and macrocycles other than porphyrins are included. This book should be useful to inorganic, organic, physical, and biochemists interested in porphyrin chemistry and biochemistry.
Download or read book American Doctoral Dissertations written by and published by . This book was released on 1997 with total page 806 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Porphyrins written by and published by . This book was released on 1986 with total page 371 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Principal Component Analysis of Resonance Raman Spectra of Nickel Geoporphyrins written by Ronald Cesidio Tucceri and published by . This book was released on 1997 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fundamental Studies of Hydroporphyrin Architectures for Solar Energy Applications written by and published by . This book was released on 2013 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: The long-term objective of the Bocian/Holten & Kirmaier/Lindsey research program is to design, synthesize, and characterize tetrapyrrole-based molecular architectures that absorb sunlight, funnel energy, and separate charge with high efficiency and in a manner compatible with current and future solar-energy conversion schemes. The synthetic tetrapyrroles include porphyrins and hydroporphyrins; the latter classes of molecules encompass analogues of the naturally occurring chlorophylls and bacteriochlorophylls (e.g., chlorins, bacteriochlorins, and their derivatives). The attainment of the goals of the research program requires the close interplay of molecular design and synthesis (Lindsey group), static and time-resolved optical spectroscopic measurements (Holten & Kirmaier group), and electrochemical, electron paramagnetic resonance, resonance Raman, and infrared studies, as well as density functional theory calculations (Bocian Group). The proposed research encompasses four interrelated themes: (i) Gain a deeper understanding of the spectral and electronic properties of bacteriochlorins, with a subsidiary aim of learning how to shift the long-wavelength absorption band deeper into the NIR region. Bacteriochlorins bearing diverse substituents, including annulated rings, will be prepared and examined. A set of bacteriochlorins with site-specific isotopic (13C, 2H) substitution patterns about the macrocycle perimeter will be prepared for studies of vibrational and electronic properties. (ii) Examine the underlying electronic origin of panchromatic absorption and excited-state behavior of strongly coupled rylene-tetrapyrrole arrays. The rylene constituents include a perylene-monoimide and a terrylene-monoimide. The tetrapyrroles include porphyrins (meso- or [beta]-linked) and bacteriochlorins ([beta]-linked). The objective is to achieve panchromatic absorption while preserving a viable, long-lived excited singlet state. (iii) Determine the rates of ground-state hole/electron transfer between (hydro)porphyrins as a function of array size, distance between components, linker type, site of linker connection, and frontier molecular orbital composition. (iv) Build upon the results of the aforementioned studies to design, synthesize, and characterize integrated architectures that incorporate a panchromatic absorber and other molecular components that that afford efficient hole/electron migration and long-lived charge separation. Such architectures will be examined on solid substrates to explore the viability of the component parts and processes under application-oriented conditions. Such architectures or successors may prove directly useful for solar-energy conversion systems. An equally important attribute is to serve as a test-bed for successful integration of the requisite properties and processes, some of which require rather weak coupling between constituents, some of which require very strong electronic interactions to elicit the desired behavior, and all of which should be tunable under molecular design control to the extent possible. Collectively, the proposed studies will provide fundamental insights into molecular properties, interactions, and processes relevant to the design of molecular architectures for solar-energy conversion. The accomplishment of these goals is only possible through a highly synergistic program that encompasses molecular design, synthesis, and in-depth characterization.
Download or read book Development of Resonance Raman Spectroscopy as a Probe of Structure for Petroporphyrins written by John Graham Rankin and published by . This book was released on 1993 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fundamental Studies of Energy and Hole electron Transfer in Hydroporphyrin Architectures written by and published by . This book was released on 2014 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: The long-term objective of the Bocian/Holten/Lindsey research program is to design, synthesize, and characterize tetrapyrrole-based molecular architectures that absorb sunlight, funnel energy, and separate charge with high efficiency and in a manner compatible with current and future solar-energy conversion schemes. The synthetic tetrapyrroles include porphyrins and hydroporphyrins; the latter classes of molecules encompass analogues of the naturally occurring chlorophylls and bacteriochlorophylls (e.g., chlorins, bacteriochlorins, and their derivatives). The attainment of the goals of the research program requires the close interplay of molecular design and synthesis (Lindsey group), static and time-resolved optical spectroscopic measurements (Holten group), and electrochemical, electron paramagnetic resonance, and resonance Raman studies, as well as density functional theory calculations (Bocian Group). The proposed research encompasses four interrelated themes: (1) Determination of the rates of ground-state hole/electron transfer between (hydro)porphyrins in multipigment arrays as a function of array size, distance between components, linker type, site of linker connection, and frontier molecular orbital composition. (2) Examination of excited-state energy transfer among hydroporphyrins in multipigment arrrays, including both pairwise and non-adjacent transfer, with a chief aim to identify the relative contributions of through-space (Förster) and through-bond (Dexter) mechanisms of energy transfer, including the roles of site of linker connection and frontier molecular orbital composition. (3) Elucidation of the role of substituents in tuning the spectral and electronic properties of bacteriochlorins, with a primary aim of learning how to shift the long-wavelength absorption band deeper into the near-infrared region. (4) Continued development of the software package PhotochemCAD for spectral manipulations and calculations through the compilation of a database of spectra for naturally occurring and synthetic hydroporphyrins. The availability of such data should augment efforts in the design of light-harvesting systems where spectral coverage in the red and near-infrared regions is desired. Collectively, the proposed studies will provide fundamental insights into molecular properties, interactions, and processes relevant to the design of molecular architectures for solar-energy conversion. The accomplishment of these goals is only possible through a highly synergistic program that encompasses molecular design, synthesis, and characterization.
Download or read book Studies of Porphyrin Dynamics Using Transient Raman Spectroscopy written by Eric William Findsen and published by . This book was released on 1986 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Resonance Raman Spectroscopy of Porphyrin Photosensitizers written by John R. Mitchell and published by . This book was released on 1988 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Resonance Raman Studies of Porphyrin Derivative Radicals written by Ching-Yao Lin and published by . This book was released on 1997 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt:
