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 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 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 A Chemical Free Approach for Increasing the Biochemical Surface enhanced Raman Spectroscopy SERS based Sensing Capabilities of Colloidal Silver Nanoparticles written by Kevin Michael Dorney and published by . This book was released on 2014 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: The unique optoelectronic properties of silver nanoparticles (AgNPs) have led to their explosive use in a multitude of both research and industrial settings in recent years. Localized surface plasmon resonance (LSPR) exhibited by AgNPs has been exploited extensively as a nano-scale probe in a variety of spectroscopic detection modalities, particularly in surface-enhanced Raman spectroscopy (SERS). The SERS effect is highly dependent upon the LSPR interaction with optical laser frequencies, thus optimization of LSPR via specific control of AgNP dimensionality and composition of the surrounding medium is vital for increasing the efficacy of SERS-based nano-sensing. This work aimed to augment LSPR of AgNPs by applying the chemical free technique of tangential flow filtration (TFF) to a Creighton colloid of spherical AgNPs and specifically tailoring their size-distribution, concentration, and purity. First, a large batch of Creighton AgNPs (1-100 nm in diameter) were size-selected (20 nm and 12 nm in average diameter), concentrated, and purified via a three-step TFF procedure and characterized for effectiveness as SERS substrates in pre-resonance, resonance, and single-molecule resonance conditions for a Raman reporter, rhodamine 6G. The 20 nm AgNPs were found to have the highest surface enhancement factors (SEFs) in pre-resonance and single molecule resonance (SEFS of 2.1 x 10^6 and 2.5 x 10^10), while the 12 nm AgNPs yielded the highest SEFs in resonant conditions (2.0 x 10^6). The TFF procedure was then introduced to a diverse class of undergraduate and graduate students in an Experimental Nanomaterials and Nanoscience course to demonstrate the versatility of the proposed method for both gold nanoparticles and AgNPs, as well as the ease of applicability for use in different research disciplines and settings. Lastly, the 20 nm TFF-obtained AgNPs were employed for the sub-nanomolar biochemical detection of a potent apoptotic metabolite, chelerythrine (CET), in human lens epithelial cell extracts. The TFF-fractionated AgNP colloid allowed for quantification of CET content within several cell compartments via a reproducible calibration curve extending over five orders of magnitude (10^-5 to 10^-10 M in CET concentration). The results of these aims offer strong evidence that TFF can be 1) utilized to yield SERS substrates capable of extending detection limits and increasing spectral signals, 2) easily adapted for a variety of nanoparticle colloids as well as research and industrial settings, and 3) employed to obtain AgNPs that facilitate trace biochemical SERS-based detection even in extensive biological matrices.

Download or read book An Assessment of Surface Enhanced Raman Spectroscopy on Colloidal Silver as an Analytical Tool in the Detection of Nonvolatile N nitrosamines and Other Organic Molecules written by Audrey Elizabeth McGowin and published by . This book was released on 1989 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Surface enhanced Raman Spectroscopy of Biological Molecules on Colloidal Silver written by Tonya May Herne and published by . This book was released on 1992 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Surface enhanced Raman Studies of Molecules Adsorbed on Silver Colloid Surfaces written by Jung-Sang Suh and published by . This book was released on 1985 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 SPECTROSCOPY USING COLLOIDAL SILVER HALIDES PYRIDINE ACRYLAMIDE written by ROBIN LEE GARRELL and published by . This book was released on 1984 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: References

Download or read book Wavelength Dependence of Surface Enhanced Raman Scattering from Ag Colloids with Adsorbed CN Complexes SO3 and Pyridine written by K. U. von Raben and published by . This book was released on 1984 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ag colloids with adsorbed CN( - ) complexes, pyridine, and HSO3( - )/SO3(2- ) ions are prepared and characterized by their elastic scattering spectra, extinction spectra, and particle size distributions. Enhanced Raman spectra from these colloids are measured as a function of incident laser wavelength over the 423-676.4-mn range. The maximum in the excitation profile for the Raman scattering shifted to a longer wavelength than that for the elastic scattering and extinction profiles. Furthermore, the Raman excitation profile peaked at a longer wavelength than that predicted by the electromagnetic calculations for the field at the tips of and surface-averaged over isolated spheres of various radii. The effect of colloid aggregation on the SERS intensity of CN( - ) complexes adsorbed on the Ag colloids is discussed. Originator-supplied keywords include: Wavelength; Raman scattering; Colloids; Silver colloids.

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 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 from a Modified Silver Electrode written by Aaron Craig Sanderson and published by . This book was released on 2007 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 Study of Surface Enhanced Resonance Raman Scattering of Crystal Violet in Colloidal Silver written by Chun Wing Wong and published by . This book was released on 2005 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Surface Enhanced Raman Scattering from Adsorbates on Silver and Gold Colloids and Silver Powders written by Klaus Ulrich Von Raben and published by . This book was released on 1982 with total page 157 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Surface enhanced raman spectra of oxygen adsorbed on silver written by Christian Pettenkofer and published by . This book was released on 1983 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: