Download or read book Fluorescence of Aromatic Hydrocarbons and Their Pi Complexes in Solutions written by Norman Marvin Radke and published by . This book was released on 1963 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Photophysical and Photochemical Properties of Aromatic Compounds written by Jacob Malkin and published by CRC Press. This book was released on 1992-06-10 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: Photophysical and Photochemical Properties of Aromatic Compounds is the first book to collect and classify all available quantitative data on the photochemistry and luminescence of aromatic compounds. Compounds are classified by both spectral-luminescent (e.g., extinction coefficients, energies and lifetimes of lower excited states) and photochemical properties. In addition, all of the quantum yields available have been collected. The variety of photochemical reactions of aromatics is examined based on eight types of elementary monomolecular and bimolecular photochemical processes. Aromatic compounds are grouped into eight categories, and the book analyzes the possibilities of occurrence of all types of elementary photoprocesses.
Download or read book Handbook of florescence spectra of Aromatic Molecules written by Isadore Berlman and published by Elsevier. This book was released on 2012-12-02 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: Handbook of Fluorescence Spectra of Aromatic Molecules, Second Edition describes the fluorescence and absorption spectra of about 200 aromatic compounds, most of which fall into the following classes: p-oligophenylenes, indole derivatives, fluoranthene derivatives, napthalene derivatives, biphenyl derivatives, and biological stains. Experiments with lasers and their relevance to fluorescence studies are included. This handbook is comprised of seven chapters and begins with a historical overview of research into the fluorescence characteristics of compounds, the methods and equipment used to measure fluorescence, and elementary considerations concerning luminescence. The format for the presentation of data pertaining to each compound covered in this text is described, together with the equipment for exciting, detecting, and recording the spectrum of the emitted radiation. The discussion then turns to the free electron model and presents general information on concepts such as chromophores, planar and nonplanar molecules, effects of planarity on fluorescence, solvent and concentration effects, and polarization. The following chapters focus on compounds such as benzene and polycyclic hydrocarbons as well as some uses of fluorescent compounds. This monograph will be of interest to organic chemists and physicists.
Download or read book Fluorescence of Aromatic Hydrocarbons in Aqueous Solution written by Roxane Meidinger and published by . This book was released on 1993 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fluorescence properties of more than 20 aromatic hydrocarbons in aqueous solution have been characterized. The list includes benzene, toluene, ethylbenzene, and xylenes (BTEX) and naphthalene and its 1- and 2-methyl derivatives. They are found in most fuels and are sufficiently soluble to pose an environmental hazard. The fluorescence of aromatic hydrocarbons is well known, but the work reported here represents the first comprehensive characterization for the aqueous phase. BTEX fluorescence quantum yields are lower in aqueous solution than in organic solvents; a similar, but less pronounced, trend holds for the naphthalenes. Fluorescence lifetimes were determined in a fiber optic light delivery and collection mode similar to that which would be used in field measurements. Stern-Volmer analysis stows that fluorescence quenching by dissolved oxygen and anions at levels expected for environmental samples is small. Interering fluorescence of humic substances is a greater concern.
Download or read book Handbook of Fluorescence Spectra of Aromatic Molecules written by Isadore B. Berlman and published by . This book was released on 1971 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt: Handbook of florescence spectra of Aromatic Molecules ...
Download or read book Determination of the Mean Life of the First Excited State of Some Complex Aromatic Compounds in Aerated Solution and the Absolute Quantum Yield of Fluorescence of Biacetyl in Solution written by Rudy Lee Van and published by . This book was released on 1963 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt: The transfer of electronic excitation energy from the lowest excited singlet state of naphtha lene, benzene and twelve of its alkyl deriva tives to the lowest excited singlet state of biacetyl was studied in aerated hexane solu tions at 28 degrees by the spectrophotofluoro metric method. Stern-Volmer diagrams were drawn to show the donor quenching by the acceptor under conditions of low optical density. Slopes obtained from these curves are independent of donor concentration and equal to K times tau, where k is the specific rate constant for the transfer process and tau is the lifetime of the donor's singlet state in aerated solutions. A value for tau is obtained if it is assumed that the collisional transfer efficiency is unity and that the specific rate constant can be calcu lated by use of the Debye equation. Lifetimes obtained in this manner agree with those measured directly by Ivanova for the same donors after the latter's work has been corrected for self quenching. The absolute quantum yield of fluo rescence of anthracene in ethanol was calculated by a comparison of its fluorescence spectrum with that of the quinine bisulfate standard; the experimental result agrees with the published literature values. (Author).
Download or read book Fluorescence in Industry written by Bruno Pedras and published by Springer. This book was released on 2019-06-14 with total page 419 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gathers 12 outstanding contributions that reflect state-of-the-art industrial applications of fluorescence, ranging from the pharmaceutical and cosmetics industries to explosives detection, aeronautics, instrumentation development, lighting, photovoltaics, water treatment and much more. In the field of fluorescence, the translation of research into important applications has expanded significantly over the past few decades. The 18th volume in the Springer Series on Fluorescence fills an important gap by focusing on selected industrial applications of fluorescence, described in contributions by both industry-based researchers and academics engaged in collaborations with industrial partners.
Download or read book Toxicological Profile for Polycyclic Aromatic Hydrocarbons written by and published by . This book was released on 1995 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Student Solutions Manual for Physical Chemistry written by C. A. Trapp and published by Macmillan. This book was released on 2009-12-18 with total page 1008 pages. Available in PDF, EPUB and Kindle. Book excerpt: With its modern emphasis on the molecular view of physical chemistry, its wealth of contemporary applications, vivid full-color presentation, and dynamic new media tools, the thoroughly revised new edition is again the most modern, most effective full-length textbook available for the physical chemistry classroom. Available in Split Volumes For maximum flexibility in your physical chemistry course, this text is now offered as a traditional text or in two volumes. Volume 1: Thermodynamics and Kinetics; ISBN 1-4292-3127-0 Volume 2: Quantum Chemistry, Spectroscopy, and Statistical Thermodynamics; ISBN 1-4292-3126-2
Download or read book Theory and Interpretation of Fluorescence and Phosphorescence written by Ralph Sherman Becker and published by Wiley-Interscience. This book was released on 1969 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Trace Characterization Chemical and Physical written by W. Wayne Meinke and published by . This book was released on 1967 with total page 602 pages. Available in PDF, EPUB and Kindle. Book excerpt: A symposium on Trace Characterization, Chemical and Physical was held at the National Bureau of Standards October 3-7, 1966.The volume contains the texts of invited lectures, and summaries by the rapporteurs of the contributed papers and discussion sessions.Topics covered include trace characterization and the properties of materials; electrical measurements; electrochemical methods; optical and x-ray spectroscopy; x-ray diffraction; optical methods; chemical spectrophotometry; nuclear methods; mass spectroscopy; preconcentration; sampling and reagents; and electron and optical microscopy.(Author).
Download or read book Aquatic Organic Matter Fluorescence written by Paula G. Coble and published by Cambridge University Press. This book was released on 2014-07-14 with total page 407 pages. Available in PDF, EPUB and Kindle. Book excerpt: A core text on principles, laboratory/field methodologies, and data interpretation for fluorescence applications in aquatic science, for advanced students and researchers.
Download or read book Use of a Neural Network for the Analysis of Fluorescence Spectra from Mixtures of Polycyclic Aromatic Hydrocarbons written by and published by . This book was released on 1991 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of a software implemented backpropagation neural network is reported for the qualitative and quantitative analysis of the fluorescence emission spectra from multicomponent mixtures of Polycyclic Aromatic Hydrocarbons (PAHs) in solution. Analysis of two types of data is described. First, a backpropagation network is developed to determine the component concentrations in a ternary mixture of PAHs. The input data provided to the network consists of sampled two dimensional (intensity vs. emission wavelength) fluorescence spectra. A second backpropagation network is investigated for the analysis of three dimensional time resolved fluorescence emission spectra for a binary PAH mixture. Both of the networks are trained to recognize preselected compounds. Each trained network is then used to evaluate unknown emission spectra and to determine the presence and relative concentration of the compounds it has learned to recognize. Results from analysis of two dimensional emission spectra show that the trained network was able to successfully identify the individual components and their concentrations in solutions containing mixtures of anthracene, chrysene and acenapthene. Analysis of three-dimensional time resolved fluorescence emission data showed that individual components could be resolved in mixtures of two spectrally similar compounds (anthracene and chrysene). Although a network could also be trained to recognize anthracene and chrysene in binary mixtures using their two-dimensional emission spectra, use of three dimensional time decay spectra reduced the learning time required to train the network by a factor of three. Fluorescence spectroscopy, CIVAPP: fiber optics.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1989 with total page 968 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Masters Theses in the Pure and Applied Sciences Accepted by Colleges and Universities of the United States written by and published by . This book was released on 1966 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analytical Chemistry written by Bryan M. Ham and published by John Wiley & Sons. This book was released on 2024-03-12 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt: ANALYTICAL CHEMISTRY Detailed reference covering all aspects of working in laboratories, including safety, fundamentals of analytical techniques, lab instrumentation, and more A comprehensive study of analytical chemistry as it pertains to the laboratory analyst and chemist, Analytical Chemistry begins with an introduction to the laboratory environment, including safety, glassware, common apparatuses, and lab basics, and continues on to guide readers through the fundamentals of analytical techniques, such as spectroscopy and chromatography, and introduce examples of laboratory programs, such as Laboratory Information Management Systems (LIMS). This newly updated and revised Second Edition of Analytical Chemistry offers expanded chapters with new figures and the latest developments in the field. Included alongside this new edition is an updated companion teaching, reference, and toolkit program called ChemTech. Conveniently available via either app or browser, the ChemTech program contains exercises that highlight and review topics covered in the book and features useful calculators and programs, including solution makers, graphing tools, and more. To aid in reader comprehension, the program also includes an interactive periodic table and chapter summaries. Written by two highly qualified authors with significant experience in both practice and academia, Analytical Chemistry covers sample topics such as: Basic mathematics in the laboratory, including different units, the metric system, significant figures, scientific calculators, and ChemTech conversion tools Analytical data treatment, including errors in the laboratory, precision versus accuracy, normal distribution curves, and determining errors in methodology Plotting and graphing, including graph construction, curve fitting, graphs of specific equations, least-squares method, and computer-generated curves Ultraviolet/visible (UV/Vis) spectroscopy, including wave and particle theory of light, light absorption transitions, the color wheel, and pigments With complete coverage of the practical aspects of analytical chemistry, Analytical Chemistry prepares students for a rewarding career as a chemist or a laboratory technician. Thanks to ChemTech integration, the book is also a useful and accessible reference for the established chemist or technician already working in the laboratory.
Download or read book Influence of a Magnetic Field on Delayed Fluorescence of Aromatic Hydrocarbons in Solution written by Karl Lendi and published by . This book was released on 1976 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
