Download or read book Surface Raman Scattering and Transmission Electron Microscopy of Haptens 2 4 dinitrophenyl amino Acids Adsorbed on Colloidal Silver written by Diane Curley and published by . This book was released on 1988 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book SURFACE ENHANCED RAMAN SCATTERING STUDIES OF 2 AND 4 VINYLPYRIDINES ADSORBED ON SILVER COLLOIDS written by NOEMI GRACIELA MIRKIN and published by . This book was released on 1989 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: developed and refined for the vinylpyridines. The calculated frequencies are in excellent agreement with the experimental results.
Download or read book Surface Enhanced Raman Scattering SERS of Citrate Ion Adsorbed on Colloidal Silver written by M. Kerker and published by . This book was released on 1980 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Raman and Surface Enhanced Raman Scattering of Biomolecules and Materials for Hydrogen Storage and Delivery written by Leo B. Seballos and published by . This book was released on 2007 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book American Doctoral Dissertations written by and published by . This book was released on 1987 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Surface Enhanced Raman Spectroscopy SERS of Oliogopeptides Adsorbed on Colloidal Silver written by Císer Camilo Cabarcas Núñez and published by . This book was released on 1998 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Surface Enhanced Raman Scattering Studies of Molecules Adsorbed on Silver Electrodes and Silver Colloids written by 金文錫 and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Surface Enhanced Raman Scattering Spectroscopy on Silver Colloids for Trace Analysis by Edith Lizette Torres Tapia written by Edith Lizette Torres Tapia and published by . This book was released on 1986 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Index to American Doctoral Dissertations written by and published by . This book was released on 1989 with total page 1252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Computational Electrodynamics and Second Hyper Raman Scattering written by Philip Dwaine Simmons (Jr.) and published by . This book was released on 2015 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surface-enhanced second hyper-Raman spectroscopy is a type of nonlinear light scattering in which three photons are simultaneously annihilated to produce one photon whose color is slightly shifted from its third harmonic. This process, while incredibly weak, can be magnified by many orders of magnitude with the aid of plasmonic substrates. In this dissertation, three different studies are presented probing both the nature of plasmonics and nonlinear Raman scattering. In the first, nanoparticle aggregates were dosed with two isotopologues of Rhodamine 6G to determine single-molecule activity. Plasmon maps of the aggregates were then generated from electron energy-loss spectroscopy (EELS) and 3D computational electrodynamics simulations. The results from this study suggest that electron beam excitation of the single molecule hot spot is only possible when the electron beam from the scanning transmission electron microscope (STEM) is located outside the junction region. In the second study, the Fano interferences between localized surface plasmon resonances (LSPRs) of single silver nanocubes were probed using dark-field optical microscopy, EELS, and computational electrodynamics. From this study, it was shown that hybrid plasmon modes induced from an electron beam are the same as those produced by resonance-Rayleigh scattering from individual nanocubes. In the third study, silver colloids were dosed with Rhodamine 6G and tested for second hyper-Raman scattering (2HRS) by laser illumination. Simulations of this scattering mechanism were extended from previous vibronic coupling models based on the time-dependent wavepacket approach. This work showed the incredible enhancement factors required for 2HRS and that the scattering mechanism for 2HRS followed the same A-term mechanism as normal surface enhanced Raman scattering (SERS).
Download or read book Surface Enhancement Factors for Raman Scattering at Silver Electrodes Role of Adsorbate Surface Interactions and Electronic Structure written by M. J. Weaver and published by . This book was released on 1985 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt: The integrated Raman band intensities for internal vibrational modes of various adsorbates at roughened silver electrodes are combined with surface concentrations obtained electrochemically to yield surface Raman scattering cross sections. These data together with the corresponding bulk-phase Raman intensities provide estimates of the degree of enhancement of the vibrational bands at the silver surface with respect to the bulk medium, i.e., the surface enhancement factors (SEF). For surface-attached thiocyanate, isothiocyanate-bridged Cr(III) complexes, and also for Cr(III) and Co(III) hexammines that are electrostatically attracted to chloride-coated silver, SEF values are obtained that are relatively insensitive to both the vibrational mode and the adsorbate, even though substantial (up to 500 fold) variations are observed in the Raman cross sections. This finding applies to stretching modes involving nonbridging ammine groups as well as to bridging thiocyanate modes, although the frequencies of the latter, but not of the former, are perturbed strongly by the silver surface. Comparisons were also made between Raman cross sections, surface enhancement factors, and excitation profiles for pyrazinepentaammineosmium(III) and (II) to explore the influence of electronic resonance since the Os(II) form displays an intense charge-transfer band in the vicinity of the laser wavelengths (460-650 nm) employed. A pronounced peak in the Os(II) excitation profile, absent for Os(III), is obtained that is markedly (ca. 100 nm) red shifted for the adsorbed versus bulk complex.
Download or read book Polymerization of Nitro Compounds on Silver Surfaces During Surface Enhanced Raman Scattering written by and published by . This book was released on 1989 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surface-enhanced Raman scattering was observed from thin films formed by 1,4- and 1,3-dinitrobenzene spin-coated onto silver island films from dilute solutions. During laser irradiation of 1,4-DNB films on silver substrates at relatively high laser powers, new bands appeared near 1152, 1350, 1412, and 1460/cm and bands near 1118, 1358, and 1372/cm decreased in intensity. A band near 1598/cm shifted to near 1605/ cm. The bands near 1152 and 1412/ cm were assigned to stretching modes of Phi-N and -N=N- bonds of azo compounds, respectively, indicating that polymerization of 1,4-DNB had occurred. The extent of polymerization was greatest when the surface coverage of adsorbed 1,4-DNB was greatest and when the SERS experiments were carried out in a nitrogen atmosphere, indicating that reducing conditions were required for the polymerization. No polymerization was observed for 1,3-DNB under similar circumstances. The difference was attributed to orientation of the adsorbed species. Thus, it was concluded that 1,4-DNB was adsorbed with a horizontal configuration in which the aromatic rings were parallel to the substrate surface and both nitro groups were in contact with the surface while 1,3-DNB was adsorbed with a vertical configuration in which the rings were perpendicular to the surface and only one nitro group was in contact with the surface.
Download or read book Avidin biotin Technology written by Meir Wilchek and published by . This book was released on 1990 with total page 794 pages. Available in PDF, EPUB and Kindle. Book excerpt: The avidin-biotin complex has been used for isolation (affinity chromatography), localization (affinity cytochemistry, cell cytometry, and blotting technology), and diagnostics (immunoassay, histopathology, and gene probes). Recently, usage of the system has been extended to include other areas. This volume covers these new applications and methodologies including hybridoma technology, bioaffinity sensors, affinity targeting, and drug delivery, as well as cross-linking, immobilization, and fusogenic studies.
Download or read book Organophosphorus Chemistry written by David W Allen and published by Royal Society of Chemistry. This book was released on 2020-04-15 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: This annual review of the literature presents a comprehensive and critical survey of the vast field of study involving organophosphorus compounds, from phosphines and related P-C bonded compounds to phosphorus acids, phosphine chalcogenides and nucleotides. The Editors have added to the content with a timely chapter on the recent developments in green synthetic approaches in organophosphorus chemistry to reflect current interests in the area. With an emphasis on interdisciplinary content, this book is aimed at the worldwide organic chemistry and engineering research communities.
Download or read book Surface Plasmon Resonance Sensors written by Leiva Casemiro Oliveira and published by Springer. This book was released on 2015-02-23 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses the important physical phenomenon of Surface Plasmon Resonance or Surface Plasmon Polaritons in thin metal films, a phenomenon which is exploited in the design of a large variety of physico-chemical optical sensors. In this treatment, crucial materials aspects for design and optimization of SPR sensors are investigated and outlined in detail. The text covers the selection of nanometer thin metal films, ranging from free-electron to the platinum type conductors, along with their combination with a large variety of dielectric substrate materials, and associated individual layer and opto-geometric arrangements. Furthermore, as-yet hardly explored SPR features of selected metal–metal and metal–dielectric super lattices are included in this report. An in-depth multilayer Fresnel evaluation provides the mathematical tool for this optical analysis, which otherwise relies solely on experimentally determined electro-optical materials parameters.
Download or read book Enzyme Immunoassays written by S.S. Deshpande and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 473 pages. Available in PDF, EPUB and Kindle. Book excerpt: This unique reference provides a pragmatic approach to the development of successful commercial immunodiagnostic products based on enzyme immunoessay technology. Presenting both the basic and applied principles, Enzyme Immunoassays gathers information on all aspects of this process, from the initial conceptualization to the introduction of the product to the market.
Download or read book Metal Enhanced Fluorescence written by Chris D. Geddes and published by John Wiley & Sons. This book was released on 2010-06-22 with total page 655 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discover how metal-enhanced fluorescence is changing traditional concepts of fluorescence This book collects and analyzes all the current trends, opinions, and emerging hot topics in the field of metal-enhanced fluorescence (MEF). Readers learn how this emerging technology enhances the utility of current fluorescence-based approaches. For example, MEF can be used to better detect and track specific molecules that may be present in very low quantities in either clinical samples or biological systems. Author Chris Geddes, a noted pioneer in the field, not only explains the fundamentals of metal-enhanced fluorescence, but also the significance of all the most recent findings and models in the field. Metal-enhanced fluorescence refers to the use of metal colloids and nanoscale metallic particles in fluorescence systems. It offers researchers the opportunity to modify the basic properties of fluorophores in both near- and far-field fluorescence formats. Benefits of metal-enhanced fluorescence compared to traditional fluorescence include: Increased efficiency of fluorescence emission Increased detection sensitivity Protect against fluorophore photobleaching Applicability to almost any molecule, including both intrinsic and extrinsic chromophores Following a discussion of the principles and fundamentals, the author examines the process and applications of metal-enhanced fluorescence. Throughout the book, references lead to the primary literature, facilitating in-depth investigations into particular topics. Guiding readers from the basics to state-of-the-technology applications, this book is recommended for all chemists, physicists, and biomedical engineers working in the field of fluorescence.
