[PDF] Ultrafast Infrared Vibrational Spectroscopy

Ultrafast Infrared Vibrational Spectroscopy PDF
Author: Michael D. Fayer
Publisher: CRC Press
ISBN: 1466510137
Size: 16.28 MB
Format: PDF, Docs
Category : Science
Languages : en
Pages : 487
View: 6385

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Ultrafast Infrared Vibrational Spectroscopy

by Michael D. Fayer, release date 2013-03-04, Ultrafast Infrared Vibrational Spectroscopy Books available in PDF, EPUB, Mobi Format. Download Ultrafast Infrared Vibrational Spectroscopy books, The advent of laser-based sources of ultrafast infrared pulses has extended the study of very fast molecular dynamics to the observation of processes manifested through their effects on the vibrations of molecules. In addition, non-linear infrared spectroscopic techniques make it possible to examine intra- and intermolecular interactions and how such interactions evolve on very fast time scales, but also in some instances on very slow time scales. Ultrafast Infrared Vibrational Spectroscopy is an advanced overview of the field of ultrafast infrared vibrational spectroscopy based on the scientific research of the leading figures in the field. The book discusses experimental and theoretical topics reflecting the latest accomplishments and understanding of ultrafast infrared vibrational spectroscopy. Each chapter provides background, details of methods, and explication of a topic of current research interest. Experimental and theoretical studies cover topics as diverse as the dynamics of water and the dynamics and structure of biological molecules. Methods covered include vibrational echo chemical exchange spectroscopy, IR-Raman spectroscopy, time resolved sum frequency generation, and 2D IR spectroscopy. Edited by a recognized leader in the field and with contributions from top researchers, including experimentalists and theoreticians, this book presents the latest research methods and results. It will serve as an excellent resource for those new to the field, experts in the field, and individuals who want to gain an understanding of particular methods and research topics.




[PDF] Ultrafast Infrared And Raman Spectroscopy

Ultrafast Infrared And Raman Spectroscopy PDF
Author: M.D. Fayer
Publisher: CRC Press
ISBN: 9780203904763
Size: 39.37 MB
Format: PDF, Kindle
Category : Science
Languages : en
Pages : 728
View: 4510

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Ultrafast Infrared And Raman Spectroscopy

by M.D. Fayer, release date 2001-03-16, Ultrafast Infrared And Raman Spectroscopy Books available in PDF, EPUB, Mobi Format. Download Ultrafast Infrared And Raman Spectroscopy books, A description of procedures for probing bond activation, H-bonded systems, molecular dynamical mechanisms, vibrational dephasing, simple liquids, and proteins and energy flow effects using ultrafast vibrational spectroscopy experiments. It discusses experimental and theoretical methods of ultrafast infrared and Raman measurements.




[PDF] Ultrafast Continuum Mid Infrared Spectroscopy Of Hydrogen Bonded Dimers

Ultrafast Continuum Mid Infrared Spectroscopy of Hydrogen Bonded Dimers PDF
Author: Ashley Marie Stingel
Publisher:
ISBN:
Size: 38.26 MB
Format: PDF, Docs
Category :
Languages : en
Pages : 148
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Ultrafast Continuum Mid Infrared Spectroscopy Of Hydrogen Bonded Dimers

by Ashley Marie Stingel, release date 2016, Ultrafast Continuum Mid Infrared Spectroscopy Of Hydrogen Bonded Dimers Books available in PDF, EPUB, Mobi Format. Download Ultrafast Continuum Mid Infrared Spectroscopy Of Hydrogen Bonded Dimers books, Hydrogen-bonded systems are ubiquitous in nature, where they provide structure and pathways for energy dissipation. Cyclic, hydrogen-bonded interfaces are capable of mediating proton transfer, but these structures have broad and complex vibrational spectra. To study these vibrational features, an ultrafast continuum midinfrared (CIR) laser pulse has been incorporated as the probe pulse in several vibrational spectroscopies used to study the vibrational dynamics and proton transfer of cyclic, hydrogen-bonded dimers. Unlike traditional ultrafast vibrational spectroscopy, which is limited to a few hundred cm-1 of bandwidth in a single experiment, ultrafast mid-infrared continuum spectroscopy allows vibrational dynamics and coupling to be observed across the full vibrational spectrum. The vibrational dynamics of the 7-azaindole- acetic acid heterodimer were studied with mid-infrared pump-CIR probe and two dimensional infrared (2D IR) spectroscopy, which revealed strong coupling across the spectrum and very fast energy transfer across the bridging hydrogen bonds. Additionally, photoinduced proton transfer was studied in the 7-azaindole homodimer with preliminary UV pump-CIR probe experiments, which showed the formation of the doubly proton-transferred tautomer and spectral signatures of proton transfer. Further development of ultrafast mid-IR spectroscopy was explored with the generation of high energy continuum mid-IR pulses in bulk chalcogenide glass.




[PDF] Ir Spektroskopie

IR Spektroskopie PDF
Author: Helmut Günzler
Publisher:
ISBN: 9783876645438
Size: 77.90 MB
Format: PDF, Mobi
Category : Infrared spectra
Languages : en
Pages : 363
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Ir Spektroskopie

by Helmut Günzler, release date 1975, Ir Spektroskopie Books available in PDF, EPUB, Mobi Format. Download Ir Spektroskopie books,




[PDF] Ultrafast Multidimensional Infrared Vibrational Echo Spectroscopy Of Gases And Liquids

Ultrafast Multidimensional Infrared Vibrational Echo Spectroscopy of Gases and Liquids PDF
Author:
Publisher:
ISBN:
Size: 65.98 MB
Format: PDF, Kindle
Category :
Languages : en
Pages : 7
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Ultrafast Multidimensional Infrared Vibrational Echo Spectroscopy Of Gases And Liquids

by , release date 2008, Ultrafast Multidimensional Infrared Vibrational Echo Spectroscopy Of Gases And Liquids Books available in PDF, EPUB, Mobi Format. Download Ultrafast Multidimensional Infrared Vibrational Echo Spectroscopy Of Gases And Liquids books, Ultrafast infrared 2D-IR vibrational echo experiments were extended experimentally and theoretically. Detailed studies of water dynamics were performed and compared to MD simulations. 2D-IR vibrational echo chemical exchange experiments were used to study the formation and dissociation kinetics of eight solute-solvent complexes, and the results were related to the enthalpies of formation. MD simulations of the chemical exchange were performed for the phenol-benzene complex and found to be in good agreement with the data. Chemical exchange experiments were used to measure the rate of gauche-trans orientational isomerization about a carbon-carbon single bond. The dynamics of molecules in the first solvation shell of solutes in mixed solvents were studied, and the time dependent solvent compositional fluctuations about solutes were elucidated. A detailed time dependent diagrammatic perturbation theory of the 2D-IR vibrational echo chemical exchange experiment including spectral diffusion, orientational relaxation, and vibrational relaxation was developed. An important new theoretical method for determining the dynamics from 2D-IR vibrational echo experiments was developed and demonstrated.




[PDF] Ultrafast Infrared And Raman Spectroscopy

Ultrafast Infrared And Raman Spectroscopy PDF
Author: M.D. Fayer
Publisher: CRC Press
ISBN: 9780824704513
Size: 38.18 MB
Format: PDF, Docs
Category : Science
Languages : en
Pages : 709
View: 1809

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Ultrafast Infrared And Raman Spectroscopy

by M.D. Fayer, release date 2001-03-16, Ultrafast Infrared And Raman Spectroscopy Books available in PDF, EPUB, Mobi Format. Download Ultrafast Infrared And Raman Spectroscopy books, A discussion of ultrafast infrared and Raman measurements. It covers procedures for probing bond activation, H-bonded systems, molecular dynamical mechanisms, vibrational dephasing, simple liquids, and proteins and energy flow effects using ultrafast vibrational spectroscopy experiments.




[PDF] Long Lived Probes To Study The Dynamics Of Liquid Crystals By Ultrafast Infrared Vibrational Spectroscopy

Long lived Probes to Study the Dynamics of Liquid Crystals by Ultrafast Infrared Vibrational Spectroscopy PDF
Author: Kathleen P. Sokolowsky
Publisher:
ISBN:
Size: 48.80 MB
Format: PDF, ePub
Category :
Languages : en
Pages :
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Long Lived Probes To Study The Dynamics Of Liquid Crystals By Ultrafast Infrared Vibrational Spectroscopy

by Kathleen P. Sokolowsky, release date 2016, Long Lived Probes To Study The Dynamics Of Liquid Crystals By Ultrafast Infrared Vibrational Spectroscopy Books available in PDF, EPUB, Mobi Format. Download Long Lived Probes To Study The Dynamics Of Liquid Crystals By Ultrafast Infrared Vibrational Spectroscopy books, Nematic liquid crystals have been widely studied in the context of practical applications and the nature of phase transitions. Above the nematic-isotropic phase transition temperature (TNI), orientational fluctuations are correlated; the existence of these pseudonematic domains in the isotropic phase dominate the dynamic properties of the bulk liquid. To examine the influence of pseudonematic ordering on the local dynamics, ultrafast infrared (IR) spectroscopies were employed. Two dimensional (2D) vibrational echo spectroscopy supplies information on the spectral diffusion of a vibrational probe molecule. Spectral diffusion is the process by which the frequency of an oscillator changes as the liquid structure about it evolves; it is characterized by the frequency-frequency correlation function (FFCF). The FFCF directly relates the frequency fluctuations of the probe molecule to the dynamics of the liquid structure surrounding it. The model nematic liquid crystal system selected is 4-cyano-4'-pentylbiphenyl (5CB); 5CB contains a nitrile group which can act as the vibrational probe. Examination of the natural abundance carbon-13 nitrile stretch allows for thicker samples, mitigating heating effects. Unfortunately, the vibrational lifetime of the carbon-13 stretch is short, and spectral diffusion is not nearly complete in the experimental window. Two novel extended lifetime vibrational probes similar in structure to 5CB were synthesized. A small amount of either molecule can be added to 5CB to probe the local structure dynamics. OHD-OKE experiments were performed on the doped solutions confirm that the addition of vibrational probe molecule does not significantly perturb the pseudonematic domains of 5CB. Temperature dependent 2D IR experiments were conducted on 5CB and 4-pentylbiphenyl (5B). 5B is molecularly very similar to 5CB, but is not a liquid crystal. The spectral diffusion dynamics in the two liquid are remarkably similar far removed from the liquid crystal phase transition. Close to TNI, the dynamics in 5CB slow down dramatically. The time constants for spectral diffusion are shown to diverge as a[T*/(T-T*)]^1/2. The temperature dependence of the time constants matches that of the size of the pseudonematic domains, not the orientational relaxation time for the domains. Two more liquid crystals are shown to have the same behavior approaching their respective phase transitions, suggesting the divergence may be universal for rod-shaped nematogens. Even at temperatures very close to TNI, spectral diffusion in liquid crystals is complete on the order of a few nanoseconds. This is drastically different than the time for total orientational relaxation which is multiple orders of magnitude slower. The complete randomization of pseudonematic domains is not required for the vibrational probe to sample all structures that contribute to the inhomogeneous line shape. A mode coupling model is constructed for the FFCF to describe spectral diffusion in terms of coupling to large wave vector density fluctuations and orientational fluctuations. The source of spectral diffusion is proposed to be small wave vector density fluctuations, which critically slow as TNI is approached.




[PDF] Vibrational Spectroscopy At Electrified Interfaces

Vibrational Spectroscopy at Electrified Interfaces PDF
Author: Andrzej Wieckowski
Publisher: John Wiley & Sons
ISBN: 1118658965
Size: 27.36 MB
Format: PDF, ePub
Category : Science
Languages : en
Pages : 440
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Vibrational Spectroscopy At Electrified Interfaces

by Andrzej Wieckowski, release date 2013-07-15, Vibrational Spectroscopy At Electrified Interfaces Books available in PDF, EPUB, Mobi Format. Download Vibrational Spectroscopy At Electrified Interfaces books, Reviews the latest theory, techniques, and applications Surface vibrational spectroscopy techniques probe the structure and composition of interfaces at the molecular level. Their versatility, coupled with their non-destructive nature, enables in-situ measurements of operating devices and the monitoring of interface-controlled processes under reactive conditions. Vibrational Spectroscopy at Electrified Interfaces explores new and emerging applications of Raman, infrared, and non-linear optical spectroscopy for the study of charged interfaces. The book draws from hundreds of findings reported in the literature over the past decade. It features an internationally respected team of authors and editors, all experts in the field of vibrational spectroscopy at surfaces and interfaces. Content is divided into three parts: Part One, Nonlinear Vibrational Spectroscopy, explores properties of interfacial water, ions, and biomolecules at charged dielectric, metal oxide, and electronically conductive metal catalyst surfaces. In addition to offering plenty of practical examples, the chapters present the latest measurement and instrumental techniques. Part Two, Raman Spectroscopy, sets forth highly sensitive approaches for the detection of biomolecules at solid-liquid interfaces as well as the use of photon depolarization strategies to elucidate molecular orientation at surfaces. Part Three, IRRAS Spectroscopy (including PM-IRRAS), reports on wide-ranging systems—from small fuel molecules at well-defined surfaces to macromolecular complexes—that serve as the building blocks for functional interfaces in devices designed for chemical sensing and electric power generation. The Wiley Series on Electrocatalysis and Electrochemistry is dedicated to reviewing important advances in the field, exploring how these advances affect industry. The series defines what we currently know and can do with our knowledge of electrocatalysis and electrochemistry as well as forecasts where we can expect the field to be in the future.




[PDF] Biological And Biomedical Infrared Spectroscopy

Biological and Biomedical Infrared Spectroscopy PDF
Author: Andreas Barth
Publisher: IOS Press
ISBN: 1607500450
Size: 54.28 MB
Format: PDF, ePub, Mobi
Category : Science
Languages : en
Pages : 429
View: 5644

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Biological And Biomedical Infrared Spectroscopy

by Andreas Barth, release date 2009-01-01, Biological And Biomedical Infrared Spectroscopy Books available in PDF, EPUB, Mobi Format. Download Biological And Biomedical Infrared Spectroscopy books, Although infrared spectroscopy has been applied with success to the study of important biological and biomedical processes for many years, key advances in this vibrant technique have led to its increasing use, ranging from characterization of individual macromolecules (DNA, RNA, lipids, proteins) to human tissues, cells and their components. Infrared spectroscopy thus has a significant role to play in the analysis of the vast number of genes and proteins being identified by the various genomic sequencing projects. Whilst this book gives an overview of the field, it highlights more recent developments, such as the use of bright synchrotron radiation for recording infrared spectra, the development of two-dimensional infrared spectroscopy and the ability to record infrared spectra at ultra fast speeds.




[PDF] Multidimensional Time Resolved Spectroscopy

Multidimensional Time Resolved Spectroscopy PDF
Author: Tiago Buckup
Publisher: Springer
ISBN: 3030024784
Size: 46.19 MB
Format: PDF
Category : Science
Languages : en
Pages : 320
View: 1580

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Multidimensional Time Resolved Spectroscopy

by Tiago Buckup, release date 2018-12-07, Multidimensional Time Resolved Spectroscopy Books available in PDF, EPUB, Mobi Format. Download Multidimensional Time Resolved Spectroscopy books, The series Topics in Current Chemistry Collections presents critical reviews from the journal Topics in Current Chemistry organized in topical volumes. The scope of coverage is all areas of chemical science including the interfaces with related disciplines such as biology, medicine and materials science. The goal of each thematic volume is to give the non-specialist reader, whether in academia or industry, a comprehensive insight into an area where new research is emerging which is of interest to a larger scientific audience. Each review within the volume critically surveys one aspect of that topic and places it within the context of the volume as a whole. The most significant developments of the last 5 to 10 years are presented using selected examples to illustrate the principles discussed. The coverage is not intended to be an exhaustive summary of the field or include large quantities of data, but should rather be conceptual, concentrating on the methodological thinking that will allow the non-specialist reader to understand the information presented. Contributions also offer an outlook on potential future developments in the field.