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Laser Photodissociation and Spectroscopy of Mass-separated Biomolecular Ions

Laser Photodissociation and Spectroscopy of Mass-separated Biomolecular Ions PDF Author: Nicolas C. Polfer
Publisher: Springer Science & Business Media
ISBN: 3319012525
Category : Science
Languages : en
Pages : 128

Book Description
This lecture notes book presents how enhanced structural information of biomolecular ions can be obtained from interaction with photons of specific frequency - laser light. The methods described in the book "Laser photodissociation and spectroscopy of mass-separated biomolecular ions" make use of the fact that the discrete energy and fast time scale of photoexcitation can provide more control in ion activation. This activation is the crucial process producing structure-informative product ions that cannot be generated with more conventional heating methods, such as collisional activation. The book describes how the powerful separation capabilities and sensitivity of mass spectrometry (MS) can be combined with the structural insights from spectroscopy by measuring vibrational and electronic spectra of trapped analytes. The implementation of laser-based photodissociation techniques in MS requires basic knowledge of tunable light sources and ion trapping devices. This book introduces the reader to key concepts and approaches in molecular spectroscopy, and the light sources and ion traps employed in such experiments. The power of the methods is demonstrated by spectroscopic interrogation of a range of important biomolecular systems, including peptides, proteins, and saccharides, with laser light in the ultraviolet-visible, and infrared range. The book "Laser photodissociation and spectroscopy of mass-separated biomolecular ions" is an indispensable resource for students and researchers engaged or interested in this emerging field. It provides the solid background of key concepts and technologies for the measurements, discusses state-of-the-art experiments, and provides an outlook on future developments and applications.

Laser Photodissociation and Spectroscopy of Mass-separated Biomolecular Ions

Laser Photodissociation and Spectroscopy of Mass-separated Biomolecular Ions PDF Author: Nicolas C. Polfer
Publisher: Springer Science & Business Media
ISBN: 3319012525
Category : Science
Languages : en
Pages : 128

Book Description
This lecture notes book presents how enhanced structural information of biomolecular ions can be obtained from interaction with photons of specific frequency - laser light. The methods described in the book "Laser photodissociation and spectroscopy of mass-separated biomolecular ions" make use of the fact that the discrete energy and fast time scale of photoexcitation can provide more control in ion activation. This activation is the crucial process producing structure-informative product ions that cannot be generated with more conventional heating methods, such as collisional activation. The book describes how the powerful separation capabilities and sensitivity of mass spectrometry (MS) can be combined with the structural insights from spectroscopy by measuring vibrational and electronic spectra of trapped analytes. The implementation of laser-based photodissociation techniques in MS requires basic knowledge of tunable light sources and ion trapping devices. This book introduces the reader to key concepts and approaches in molecular spectroscopy, and the light sources and ion traps employed in such experiments. The power of the methods is demonstrated by spectroscopic interrogation of a range of important biomolecular systems, including peptides, proteins, and saccharides, with laser light in the ultraviolet-visible, and infrared range. The book "Laser photodissociation and spectroscopy of mass-separated biomolecular ions" is an indispensable resource for students and researchers engaged or interested in this emerging field. It provides the solid background of key concepts and technologies for the measurements, discusses state-of-the-art experiments, and provides an outlook on future developments and applications.

Ion Mobility-Mass Spectrometry

Ion Mobility-Mass Spectrometry PDF Author: Frank Sobott
Publisher: Royal Society of Chemistry
ISBN: 1839161663
Category : Science
Languages : en
Pages : 547

Book Description
Providing a comprehensive guide to the technique, each chapter is written by an internationally recognised expert and will help the end users understand the practicalities of using different instruments for different ion mobility purposes.

Hyperspectral Image Unmixing Incorporating Adjacency Information

Hyperspectral Image Unmixing Incorporating Adjacency Information PDF Author: Bauer, Sebastian
Publisher: KIT Scientific Publishing
ISBN: 3731507889
Category : Technology & Engineering
Languages : en
Pages : 236

Book Description
While the spectral information contained in hyperspectral images is rich, the spatial resolution of such images is in many cases very low. Many pixel spectra are mixtures of pure materials' spectra and therefore need to be decomposed into their constituents. This work investigates new decomposition methods taking into account spectral, spatial and global 3D adjacency information. This allows for faster and more accurate decomposition results.

Photophysics of Ionic Biochromophores

Photophysics of Ionic Biochromophores PDF Author: Steen Brøndsted Nielsen
Publisher: Springer Science & Business Media
ISBN: 3642401902
Category : Science
Languages : en
Pages : 238

Book Description
This book provides a concise overview of the photophysics and spectroscopy of bio chromophore ions. The book "Photophysics of Ionic Biochromophores" summarizes important recent advances in the spectroscopy of isolated biomolecular ions in vacuo, which has within the last decade become a highly active research field. Advanced instrumental apparatus and the steady increase in more and more powerful computers have made this development possible, both for experimentalists and theoreticians. Applied techniques described here include absorption and fluorescence spectroscopy, which are excellent indicators of environmental effects and can thus shed light on the intrinsic electronic structures of ions without perturbations from e.g. water molecules, counter ions, nearby charges, and polar amino acid residues. When compared with spectra of the chromophores in their natural environment, such spectra allow to identify possible perturbations. At the same time gas-phase spectra provide important benchmarks for quantum chemistry calculations of electronically excited states. This volume focuses on biological systems from protein biochromophores, e.g. the protonated Schiff-base retinal responsible for vision, and individual aromatic amino acids to peptides and whole proteins, studied using visible, ultraviolet and vacuum ultraviolet light. Work on DNA nucleotides and strands that are amenable to mass spectrometric studies because of the negatively charged sugarphosphate backbone are also presented. DNA strands represent an example of the interplay between multiple chromophores, which is even harder to model correctly than just single chromophores due to spatially extended excited states and weak coupling terms. The experimental techniques used to measure spectra and commonly used theoretical methods are described with a discussion on limitations and advantages. The volume includes an updated status of the field and interesting future directions such as cold ion spectroscopy.

Structural Characterization and Separation of Biomolecules by Matrix-assisted Laser Desorption Ionization Ion-mobility Mass Spectrometry

Structural Characterization and Separation of Biomolecules by Matrix-assisted Laser Desorption Ionization Ion-mobility Mass Spectrometry PDF Author: Ablatt Mahsut
Publisher:
ISBN:
Category : Biomolecules
Languages : en
Pages : 162

Book Description


Lasers and Mass Spectrometry

Lasers and Mass Spectrometry PDF Author: David M. Lubman
Publisher: Oxford University Press, USA
ISBN: 0195059298
Category : Science
Languages : en
Pages : 560

Book Description
Contributors to this volume focus on the fundamentals of the technique of analyzing material based on the atomic weight of the species, using the power and definition of lasers to enable measurement of smaller quantities and more finely localized particles. Each chapter deals with a particular application area and should be sufficient to form an entry point for the utilization of mass spectrometry by graduate students and researchers. The book provides the first full discussion of the new techniques of laser applications in the field.

Developments in Laser Desorption and Photodissociation Fourier Transform Mass Spectrometry

Developments in Laser Desorption and Photodissociation Fourier Transform Mass Spectrometry PDF Author: Lydia Marie Nuwaysir
Publisher:
ISBN:
Category : Dissociation
Languages : en
Pages : 468

Book Description


Gas-Phase IR Spectroscopy and Structure of Biological Molecules

Gas-Phase IR Spectroscopy and Structure of Biological Molecules PDF Author: Anouk M. Rijs
Publisher: Springer
ISBN: 3319192043
Category : Science
Languages : en
Pages : 409

Book Description
The series Topics in Current Chemistry presents critical reviews of the present and future trends in modern chemical research. 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. Review articles for the individual volumes are invited by the volume editors. Readership: research chemists at universities or in industry, graduate students.

Principles of Mass Spectrometry Applied to Biomolecules

Principles of Mass Spectrometry Applied to Biomolecules PDF Author: Chava Lifshitz
Publisher: John Wiley & Sons
ISBN: 0470050411
Category : Science
Languages : en
Pages : 707

Book Description
An extensive compilation of articles by leading professionals, this reference explains the fundamental principles of mass spectrometry as they relate to the life sciences. Topics covered include spectroscopy, energetics and mechanisms of peptide fragmentation, electron capture dissociation, ion-ion and ion-molecule reactions, reaction dynamics, collisional activation, soft-landing, protein structure and interactions, thermochemistry, and more. The book empowers readers to develop new ways of using these techniques.

Spectroscopy and Modeling of Biomolecular Building Blocks

Spectroscopy and Modeling of Biomolecular Building Blocks PDF Author: Jean-Pierre Schermann
Publisher: Elsevier
ISBN: 0080558224
Category : Science
Languages : en
Pages : 499

Book Description
Spectroscopy and Modeling of Biomolecular Building Blocks presents an overview of recent advances in the intertwining of the following research fields: photon and electron spectroscopy, quantum chemistry, modelling and mass-spectrometry. The coupling of these disciplines offers a new point of view to the understanding of isolated elementary building blocks of biomolecules and their assemblies. It allows the unambiguous separation between intrinsic properties of biomolecular systems and those induced by the presence of their environment. The first chapters provide background in modelling (I), frequency-resolved spectroscopy using microwave, infrared and UV photons, time-resolved spectroscopy in the femtosecond domain and energy-resolved electron spectroscopy (II) and production of gas-phase neutral and ionic biomolecular species, mass-spectrometry, ion mobility and BIRD techniques (III). Chapter IV is devoted to case studies of gas-phase experimental investigations coupled to quantum or classical calculations. The topics are structural studies of nucleobases and oligonucleotides, peptides and proteins, sugars; neuromolecules; non-covalent complexes; chiral systems, interactions of low-energy electrons with biomolecules in the radiation chemistry context and very large gas-phase biomolecular systems. The fifth chapter concerns the link between gas-phase and liquid-phase. Different treatments of solvation are illustrated through examples pointing out the influence of progressive addition of water molecules upon properties of nucleobases, peptides, sugars and neuromolecules. Offer a new perspective to the understanding of isolated elementary building blocks of bio molecules Includes case studies of experimental investigations coupled to quantum or classical calculations