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Infrared spectra. --- Molecular spectroscopy. --- Molecular theory.

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Driven by ground-based, airborne, and IRAS observations, the PAH hypothesis was first formulated in the mid-eighties : the widespreas emission features in the 3-13 æm range are due to UV-pumped, IR fluorescence by large Polycyclic Aromatic Hydrocarbon molecules. These molecules are a ubiquitous component of the interstellar medium both in local galaxies as well as out to redshifts of ̃3 and probably beyond, play an important role in its physical and chemical characteristics, and form a key link between small hydrocarbon species and large carbonaceous grains. This book gathers contributions that reflect the evolution of the field over the last 25 years, taking advantage of IR space missions - ISO, Spitzer and AKARI - and of dedicated experimental and quantum-chemical studies. We have now reached a stage where we can develop these mid-infrared features as diagnostic tools to study star formation processes, protoplanetary disks as well as galaxy assemblage in the early Universe. The current Herschel/Planck area opens the possibility to better characterize the mid-IR carriers through their contribution to the far-IR and mm emissions. Still, much effort is required before we will fully understand the formation and nature of interstellar PAHs and their role in the Universe. Physical chemists can play an important role in driving this field. This book aims at discussing the state-of-the-art of the PAH hypothesis and to chart the future in this interdisciplinary field. It highlights the various aspects of interstellar PAHs:- Rich IR spectra of interstellar PAHs- PAHs and star formation in the near and far Universe- The lifecycle of PAHs in space- PAHs in regions of planet formation- PAHs and carbonaceous grains & Solar system materials.

Stars --- Organic Chemistry, --- Infrared spectra --- Polycyclic aromatic hydrocarbons --- Congresses. --- PAH hypothesis --- space missions

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"The last decades have been characterized by great advances in experimental and theoretical physical methods which find application in the Infrared Molecular Spectroscopy. As a consequence, several recent monographs and books have evidenced the most advanced aspects of Molecular Spectroscopy, such as non-linear effects, dynamics of floppy molecules and Van der Waals complexes, and sophisticated theoretical and laboratory methods. On the other side, the evolution of the knowledge in this field makes it desirable to go a few steps back, thinking of an updated detailed formulation of the elementary basic principles and rules of the traditional linear absorption spectroscopy of semi-rigid molecules, which is preliminary to the most advanced developments, in line with the latest theoretical developments. This is even more desirable, if one thinks of the increasing need for people able to handle vibration-rotation spectra, with the present wide potentiality of applications in the atmospheric and planetary research"--

Infrared spectra. --- Molecular spectroscopy. --- Molecular theory. --- Infrared spectra --- Molecular spectroscopy --- Molecular theory --- Physics --- Physical Sciences & Mathematics --- Light & Optics --- Spectre infrarouge --- Spectroscopie moléculaire --- Théorie moléculaire --- Chemistry, Physical and theoretical --- Matter --- Spectroscopy, Molecular --- Spectrum analysis --- Molecular spectra --- Spectrum, Infra-red --- Spectrum, Infrared --- Constitution

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678.01:543 <083> --- polymeren --- plastic --- 678.01:543 <083> Properties. Defects. Constitution. Serviceability. Sampling. Analysis. Testing-:-Analytical chemistry--Tabellen. Lijsten. Indices --(niet-bibliografische) --- Properties. Defects. Constitution. Serviceability. Sampling. Analysis. Testing-:-Analytical chemistry--Tabellen. Lijsten. Indices --(niet-bibliografische) --- fysicochemie --- Macromolecules --- Colloids. --- Colloids --- Infrared spectra. --- Infrared spectra --- Molecular spectra. --- Molecular structure. --- Molecular structure --- Textile fibers, Synthetic. --- Thermoplastics. --- Addition resins --- Adhesives --- Disperse systems --- Elastomers --- Impregnating --- Natural fibers --- Raw materials --- Rubber --- Vulcanized elastomers

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The Symposium was held to honour the memory of the late Dr. A.J. Tench who made numerous important contributions to our knowledge of the structure, reactivity and adsorption properties of oxide surfaces. This volume contains an up-to-date picture of adsorption and catalysis on oxide surfaces, not in the form of a comprehensive review but in its living aspects of work in progress. It describes detailed studies on the determination of the coordination surface ions, particularly oxide ions, by photoluminescence and reflectance spectroscopy, on the identification of adsorbed species by magnetic op

Adsorption --- -Catalysis --- -Oxides --- Chalcogenides --- Oxygen compounds --- Activation (Chemistry) --- Chemistry, Physical and theoretical --- Surface chemistry --- Sorption --- Separation (Technology) --- Congresses --- Congresses. --- Conferences - Meetings --- Porous materials --- Experimental solid state physics --- Materials sciences --- fysicochemie --- Catalysis --- Oxides --- Energy transfer. --- Infrared spectra. --- Luminescence. --- Esr (electron spin resonance) --- Reactivity (chemical) --- Structure-property relationship --- Ultraviolet and visible spectra