Author : Douglas H. Kreszowski
Publisher :
Page : 482 pages
File Size : 39,7 MB
Release : 1995
Category : Bacteria
ISBN :
Author :
Publisher :
Page : 896 pages
File Size : 27,2 MB
Release : 1995
Category : Dissertation abstracts
ISBN :
Author : David Dolphin
Publisher : Elsevier
Page : 655 pages
File Size : 16,68 MB
Release : 2012-12-02
Category : Science
ISBN : 0323143903
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.
Author : Leznoff, C. C. (Clifford C.)
Publisher : New York : VCH, 1989-c1996.
Page : 328 pages
File Size : 27,58 MB
Release : 1989
Category : Science
ISBN :
Up-to-date and written by leading experts, this book is unique in a rapidly expanding field. It provides in-depth discussions and descriptions of the materials, electronic properties and applications of phthalocyanines. Aspects of phthalocyanines covered include * synthesis * polymer aspects * electronic spectroscopy * excited state chemistry and physics * chemical sensors * biological aspects (e.g. photodynamic therapy of cancer) The numerous tables, chemical structures, and references are particularly handy source materials for both the novice and experienced researcher and industrial practitioner interested in phthalocyanines.
Author : Paras N. Prasad
Publisher : John Wiley & Sons
Page : 622 pages
File Size : 41,76 MB
Release : 2004-01-16
Category : Science
ISBN : 0471465399
Paras Prasad’s text provides a basic knowledge of a broad range of topics so that individuals in all disciplines can rapidly acquire the minimal necessary background for research and development in biophotonics. Introduction to Biophotonics serves as both a textbook for education and training as well as a reference book that aids research and development of those areas integrating light, photonics, and biological systems. Each chapter contains a topic introduction, a review of key data, and description of future directions for technical innovation. Introduction to Biophotonics covers the basic principles of Optics Optical spectroscopy Microscopy Each section also includes illustrated examples and review questions to test and advance the reader’s knowledge. Sections on biosensors and chemosensors, important tools for combating biological and chemical terrorism, will be of particular interest to professionals in toxicology and other environmental disciplines. Introduction to Biophotonics proves a valuable reference for graduate students and researchers in engineering, chemistry, and the life sciences.
Author : Joyce Alvin Bearden
Publisher :
Page : 548 pages
File Size : 16,6 MB
Release : 1964
Category : Spectrum analysis
ISBN :
Author : Karl Kadish
Publisher : Elsevier
Page : 238 pages
File Size : 18,54 MB
Release : 2000
Category : Science
ISBN : 9780123932297
The Porphyrin Handbook, Volume 19: Applications of Phthalocyanines provides information pertinent to every aspect of the chemistry, synthesis, spectroscopy, and structure of phthalocyanines. This book examines the biology and medical implications of porphyrin systems. Organized into five chapters, this volume begins with an overview of the basic photobiology of phthalocyanines, their structure-activity relationships, mechanisms of action in a variety of biological systems, and their potential applications for various medical purposes. This text then examines the type of organization of the molecules in the solid state and the intensity of the intermolecular interactions. Other chapters consider the applications of phthalocyanines as decorative and functional materials, with emphasis on properties and structures of phthalocyanines with industrial relevance. This book discusses as well the enzyme-like catalytic functions of metal complexes derivatives and their practical applications as odor-removing systems and bacterial systems based on their effective catalytic activities. This book is a valuable resource for research scientists, engineers, and clinicians.
Author : A. B. P. Lever
Publisher : Wiley-VCH
Page : 322 pages
File Size : 14,72 MB
Release : 1989-03-31
Category : Science
ISBN : 9780471187158
Porphyrins play a vital role in many biological functions including oxygen transport, electron transfer and catalyzing the incorporation of oxygen into other molecules. This current survey discusses the use of modern physical techniques to probe porphyrin structure and function. The authors review the data available through a particular technique and show what can be learned therefrom about the (electronic) structure and function of biologically important porphyrins. The techniques include magnetic circular dichroism, X-ray absorption fine structure (EXAFS) and Mössbauer spectroscopies. All contributors are well known in their respective fields, enjoying world-wide reputation.
Author : Jamal Uddin
Publisher : BoD – Books on Demand
Page : 462 pages
File Size : 27,53 MB
Release : 2012-06-29
Category : Science
ISBN : 9535106643
In the last few decades, Spectroscopy and its application dramatically diverted science in the direction of brand new era. This book reports on recent progress in spectroscopic technologies, theory and applications of advanced spectroscopy. In this book, we (INTECH publisher, editor and authors) have invested a lot of effort to include 20 most advanced spectroscopy chapters. We would like to invite all spectroscopy scientists to read and share the knowledge and contents of this book. The textbook is written by international scientists with expertise in Chemistry, Biochemistry, Physics, Biology and Nanotechnology many of which are active in research. We hope that the textbook will enhance the knowledge of scientists in the complexities of some spectroscopic approaches; it will stimulate both professionals and students to dedicate part of their future research in understanding relevant mechanisms and applications of chemistry, physics and material sciences.
Author : Lai Chung Liu
Publisher : Springer Nature
Page : 249 pages
File Size : 19,36 MB
Release : 2020-09-10
Category : Science
ISBN : 3030548511
The thesis provides the necessary experimental and analytical tools to unambiguously observe the atomically resolved chemical reactions. A great challenge of modern science has been to directly observe atomic motions during structural transitions, and while this was first achieved through a major advance in electron source brightness, the information content was still limited and new methods for image reconstruction using femtosecond electron diffraction methods were needed. One particular challenge lay in reconciling the innumerable possible nuclear configurations with the observation of chemical reaction mechanisms that reproducibly give the same kind of chemistry for large classes of molecules. The author shows that there is a simple solution that occurs during barrier crossing in which the highly anharmonic potential at that point in nuclear rearrangements couples high- and low-frequency vibrational modes to give highly localized nuclear motions, reducing hundreds of potential degrees of freedom to just a few key modes. Specific examples are given in this thesis, including two photoinduced phase transitions in an organic system, a ring closure reaction, and two direct observations of nuclear reorganization driven by spin transitions. The emerging field of structural dynamics promises to change the way we think about the physics of chemistry and this thesis provides tools to make it happen.
