Electronic Excited State Properties Of Transition Metal Complexes Studied By Time Resolved Raman Spectroscopy And Optical Spectroscopy PDF Download
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Author | : Jing-Huei Perng |
Publisher | : |
Total Pages | : 472 |
Release | : 1989 |
Genre | : |
ISBN | : |
Download Electronic Excited State Properties of Transition-metal Complexes Studied by Time-resolved Raman Spectroscopy and Optical Spectroscopy Book in PDF, ePub and Kindle
Author | : Gregory Stephen Huff |
Publisher | : |
Total Pages | : 202 |
Release | : 2017 |
Genre | : |
ISBN | : |
Download Excited States of D6 and D8 Transition Metal Complexes Book in PDF, ePub and Kindle
The electronic excited states of some platinum(II), rhenium(I) and ruthenium(II) complexes with diimine ligands were studied with spectroscopic and computational tools. This type of complex can form charge-transfer (CT) excited states which are potentially useful for solar energy applications. fac-Re(CO)3(N^N)L] complexes are discussed first. The complexes form luminescent CT states where an excited electron is localized on the N^N ligand. Resonance Raman spectroscopy shows how the origin of this excited electron can change from ligand-based to metal-based depending on donating ligand L. Variations in the N^N ligand in Re(I) complexes are also studied. Time-resolved infrared spectroscopy shows how complexes with 2-pyridyl-1,2,3-triazole (pytri) ligands form excited states with a smaller degree of charge separation than is typically seen. [Ru(pytri)(bpy)2]2+ complexes are shown to form CT states which are comparable to those of [Ru(bpy)3]2+ where an excited electron is localized on a bpy ligand. However, the pytri complexes have unusually short excited state lifetimes due to rapid formation of metal-centered triplet states (3 MC) which are characterized using density functional theory (DFT) calculations. A series of square-planar Pt(II) complexes containing pytri ligands with various donor ligands (chloride, phenylacetylide, catechol and benzenedithiol) are examined next. The ligand donor strength can control whether the complex is luminescent by adjusting the relative energies of the 3MC and CT states. Resonantly enhanced Raman bands associated with the pytri ligand are very consistent across the series. The catecholate and dithiolate complexes have an unexpected ordering of their CT absorption bands which is not predicted by DFT calculations. Finally, complexes in which an organic electron donor is appended are discussed. This brings about an additional CT state which adds an additional layer of complexity to the systems studied in previous chapters. The light-harvesting ability of the complexes is increased but their photophysical properties also change drastically.
Author | : Hartmut Yersin |
Publisher | : Springer |
Total Pages | : 198 |
Release | : 2003-07-01 |
Genre | : Science |
ISBN | : 3540444475 |
Download Transition Metal and Rare Earth Compounds Book in PDF, ePub and Kindle
Transition metal and rare earth compounds are investigated intensively because of important questions concerning fundamental research problems. More recently also their enormous potential for the development of new materials for photophysical and photochemical applications has been explored. Thus, it is important to focus on a deeper understanding of the elctronic energies, transition prohabilities, intermolecular interactions, etc.. This task has been accomplished by leading researchers in the field. They present introductions into, but also detailed reviews of the current state of knowledge of three different subjects.
Author | : Hartmut Yersin |
Publisher | : Springer Science & Business Media |
Total Pages | : 276 |
Release | : 1997-07-16 |
Genre | : Science |
ISBN | : 9783540629221 |
Download Electronic and Vibronic Spectra of Transition Metal Complexes II Book in PDF, ePub and Kindle
The unique properties and applications of transition metal compounds have long fascinated both physicists and chemists. This volume presents theoretical and experimental studies for a deeper understanding of the electronic and vibronic properties of these compounds. In particular, an introduction into properties of spin sublevels of dd*, dÂ*, and ÂÂ* states is given, and a modern ligand field theory based on the Angular Overlap Model is presented. In experimental case studies it is shown how to characterize different types of electronic transitions using modern methods of laser spectroscopy. Consequences of spin-orbit coupling, zero-field splittings, spin-lattice relaxations, chromophore-matrix interactions, Herzberg-Teller/Franck-Condon activities, and localization/delocalization properties are treated.
Author | : William W. Parson |
Publisher | : Springer |
Total Pages | : 583 |
Release | : 2015-06-09 |
Genre | : Science |
ISBN | : 3662467771 |
Download Modern Optical Spectroscopy Book in PDF, ePub and Kindle
This textbook offers clear explanations of optical spectroscopic phenomena and shows how spectroscopic techniques are used in modern molecular and cellular biophysics and biochemistry. The topics covered include electronic and vibrational absorption, fluorescence, resonance energy transfer, exciton interactions, circular dichroism, coherence and dephasing, ultrafast pump-probe and photon-echo spectroscopy, single-molecule and fluorescence-correlation spectroscopy, Raman scattering, and multiphoton absorption. This revised and updated edition provides expanded discussions of quantum optics, metal-ligand charge-transfer transitions, entropy changes during photoexcitation, electron transfer from excited molecules, normal-mode calculations, vibrational Stark effects, studies of fast processes by resonance energy transfer in single molecules, and two-dimensional electronic and vibrational spectroscopy. The explanations are sufficiently thorough and detailed to be useful for researchers and graduate students and advanced undergraduates in chemistry, biochemistry and biophysics. They are based on time-dependent quantum mechanics, but are developed from first principles with a clarity that makes them accessible to readers with little prior training in this field. Extra topics and highlights are featured in special boxes throughout the text. The author also provides helpful exercises for each chapter.
Author | : Jack Yarwood |
Publisher | : Royal Society of Chemistry |
Total Pages | : 334 |
Release | : 2010-06 |
Genre | : Reference |
ISBN | : 1847550479 |
Download Spectroscopic Properties of Inorganic and Organometallic Compounds Book in PDF, ePub and Kindle
Reflecting the growing volume of published work in this field, researchers will find this book an invaluable source of information on current methods and applications.
Author | : Kyeong-Sook Kim Shin |
Publisher | : |
Total Pages | : 526 |
Release | : 1990 |
Genre | : |
ISBN | : |
Download Determination of Excited State Geometries of Transition Metal Complexes Via Electronic Spectroscopy, Raman Spectroscopy, and Time-dependent Theory Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 1102 |
Release | : 1991 |
Genre | : Aeronautics |
ISBN | : |
Download Scientific and Technical Aerospace Reports Book in PDF, ePub and Kindle
Author | : Jon A. McCleverty |
Publisher | : Pergamon |
Total Pages | : 906 |
Release | : 2004 |
Genre | : Coordination compounds |
ISBN | : |
Download Comprehensive Coordination Chemistry II: Transition metal groups 7 and 8 Book in PDF, ePub and Kindle
Author | : Ke-Li Han |
Publisher | : John Wiley & Sons |
Total Pages | : 1229 |
Release | : 2011-03-16 |
Genre | : Science |
ISBN | : 1119972922 |
Download Hydrogen Bonding and Transfer in the Excited State Book in PDF, ePub and Kindle
This book gives an extensive description of the state-of-the-art in research on excited-state hydrogen bonding and hydrogen transfer in recent years. Initial chapters present both the experimental and theoretical investigations on the excited-state hydrogen bonding structures and dynamics of many organic and biological chromophores. Following this, several chapters describe the influences of the excited-state hydrogen bonding on various photophysical processes and photochemical reactions, for example: hydrogen bonding effects on fluorescence emission behaviors and photoisomerization; the role of hydrogen bonding in photosynthetic water splitting; photoinduced electron transfer and solvation dynamics in room temperature ionic liquids; and hydrogen bonding barrier crossing dynamics at bio-mimicking surfaces. Finally, the book examines experimental and theoretical studies on the nature and control of excited-state hydrogen transfer in various systems. Hydrogen Bonding and Transfer in the Excited State is an essential overview of this increasingly important field of study, surveying the entire field over 2 volumes, 40 chapters and 1200 pages. It will find a place on the bookshelves of researchers in photochemistry, photobiology, photophysics, physical chemistry and chemical physics.