| Journal Articles: 33 results |
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Refractive Index Determination of Transparent Polymers: Experimental Setup for Multi-Wavelength Determination and Calculation at Specific Frequencies Using Group Contribution Theory Jay Dlutowski, Andres M. Cardenas-Valencia, David Fries, and Larry Langebrake
A simple lab that clearly shows the dependence of light reflection on the angle of incidence for transparent polymers is described. Light transmission measurements are used to determine the reflection magnitude and the refractive index of the material.
Dlutowski, Jay; Cardenas-Valencia, Andres M.; Fries, David; Langebrake, Larry. J. Chem. Educ. 2006, 83, 1867.
Physical Properties |
Polymerization |
UV-Vis Spectroscopy
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Classroom Demonstrations of Concepts in Molecular Fluorescence Jonathan P. Blitz, Daniel J. Sheeran, and Thomas L. Becker
A multichannel CCD-array spectrophotometer and handheld UV lamp are utilized to acquire and project in real-time the fluorescence emission spectra of quinine, fluorescein, eosin yellow, and rhodamine B.
Blitz, Jonathan P.; Sheeran, Daniel J.; Becker, Thomas L. J. Chem. Educ. 2006, 83, 758.
Dyes / Pigments |
Fluorescence Spectroscopy |
Instrumental Methods |
UV-Vis Spectroscopy
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E = mc2 for the Chemist: When Is Mass Conserved? Richard S. Treptow
Einstein's famous equation is frequently misunderstood in textbooks and popular science literature. Its correct interpretation is that mass and energy are different measures of a single quantity known as massenergy, which is conserved in all processes.
Treptow, Richard S. J. Chem. Educ. 2005, 82, 1636.
Atomic Properties / Structure |
Nuclear / Radiochemistry |
Theoretical Chemistry |
Thermodynamics
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Simple and Inexpensive Classroom Demonstrations of Nuclear Magnetic Resonance and Magnetic Resonance Imaging Joel A. Olson, Karen J. Nordell, Marla A. Chesnik, Clark R. Landis, and Arthur B. Ellis, M. S. Rzchowski, S. Michael Condren, and George C. Lisensky
Several demonstrations of resonance phenomena associated with nuclear magnetic resonance (NMR) and magnetic resonance imaging (MRI) are described. Complete instructions for the construction of the demonstrations, which can be used on an overhead projector, are included.
Olson, Joel A.; Nordell, Karen J.; Chesnik, Marla A.; Rzchowski, M. S.; Condren, S. Michael; Landis, Clark R.; Lisensky, George C.; Ellis, Arthur B. J. Chem. Educ. 2000, 77, 882.
Instrumental Methods |
Magnetic Properties |
NMR Spectroscopy
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A Classroom Demonstration of Rayleigh Light Scattering in Optically Active and Inactive Systems Monica Avalos Pecina and Charles A. Smith
The objective of this demonstration is to allow students to make a direct observation of the rotation of polarized light in an optically active medium. The observation is performed by passing a laser beam through a long vertical cylinder, which contains a solution of a nonabsorbing optically active compound.
Pecina, Monica Avalos; Smith, Charles A. J. Chem. Educ. 1999, 76, 1230.
Lasers |
Spectroscopy |
Quantum Chemistry
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News from Online: A Spectrum of Color Carolyn Sweeney Judd
Links to a variety of on-line resources relating to rainbows, spectra, and the color of light.
Judd, Carolyn Sweeney. J. Chem. Educ. 1999, 76, 728.
Lasers |
Spectroscopy
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Spectrophotometry (by Barbara Sawrey and Gabriele Wienhausen) reviewed by David Pringle
Spectrophotometry is an interactive CD-ROM which introduces the basics of UV-visible spectrophotometry with some mention of infrared and other forms of spectrophotometry. The CD is divided into six sections: Introduction, Background, A Detailed Look, The Spectrophotometer, Practice, and Quantitative Spectrophotometry.
Pringle, David. J. Chem. Educ. 1998, 75, 978.
UV-Vis Spectroscopy |
IR Spectroscopy
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Determining the Authenticity of Gemstones Using Raman Spectroscopy Aaron Aponick, Emedio Marchozzi, Cynthia R. Johnston, and Carl T. Wigal
This paper reports the development of an experiment using Raman spectroscopy which determines the authenticity of both diamonds and pearls. The resulting spectra provide an introduction to vibrational spectroscopy and can be used in a variety of laboratory courses ranging from introductory chemistry to instrumental analysis.
Aaron Aponick, Emedio Marchozzi, Cynthia R. Johnston, and Carl T. Wigal. J. Chem. Educ. 1998, 75, 465.
Instrumental Methods |
Lasers |
Spectroscopy |
Raman Spectroscopy
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An Investigation into the Absorption of Infrared Light by Small Molecules: A General Chemistry Experiment William B. Heuer and Edward Koubek
An introductory, two-part classroom/laboratory activity demonstrating the mechanism of absorption of infrared light by small molecules is described. A model for molecular vibration is introduced during pre-lab discussion, and a mechanism by which such vibrations may be excited by infrared radiation light is postulated.
Heuer, William B.; Koubek, Edward. J. Chem. Educ. 1997, 74, 313.
IR Spectroscopy
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A Unifying Approach to Absorption Spectroscopy at the Undergraduate Level Roger S. Macomber
This article suggests that when introducing the topics associated with absorption spectroscopy, the students can greatly benefit from a preliminary discussion of the principle of frequency matching. Virtually all types of absorption spectroscopy share a simple but critical requirement: the frequency of absorbed radiation must exactly match the frequency of some inherent or induced periodic motion of the particles. If the particles are not engaged in such motion, there can be no absorption.
Macomber, Roger S. J. Chem. Educ. 1997, 74, 65.
Spectroscopy |
Atomic Spectroscopy
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Interfacing an Old UV-VIS Spectrophotometer to a PC Computer Guinon, J. L.; Garcia-Jareno, J.; Garcia-Anton, J.; Perez-Herranz, V.
Instructions for interfacing an old UV-VIS spectrophotometer to a PC computer.
Guinon, J. L.; Garcia-Jareno, J.; Garcia-Anton, J.; Perez-Herranz, V. J. Chem. Educ. 1995, 72, A81.
Laboratory Equipment / Apparatus |
Laboratory Computing / Interfacing |
UV-Vis Spectroscopy
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Analysis of Ethylene-Vinyl Acetate Copolymers: A Combined TGA/FTIR Experiment Williams, Kathryn R.
Enhancement of an earlier procedure by equipping an FTIR with an Attenuated Total Reflectance accessory and by combining the infrared results with Thermogravimetric Analysis data.
Williams, Kathryn R. J. Chem. Educ. 1994, 71, A195.
IR Spectroscopy |
Fourier Transform Techniques |
Gravimetric Analysis |
Thermal Analysis |
Laboratory Equipment / Apparatus
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Nuclear magnetic resonance spectroscopy in biochemistry Cheatham, Steve
This review will discuss the nature of the NMR experiment, the techniques used, the types of structural and dynamic information one obtains, and how one can view and refine structures using computer graphics techniques in combination with NMR data.
Cheatham, Steve J. Chem. Educ. 1989, 66, 111.
NMR Spectroscopy
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A step-by-step picture of pulsed (time domain) NMR Schwartz, Leslie J.
The goal of this paper is to describe a pulsed NMR experiment that is as simple and pictorial as possible, but that stops short of dangerous generalizations and oversimplifications that can lead to contradictions.
Schwartz, Leslie J. J. Chem. Educ. 1988, 65, 752.
NMR Spectroscopy |
Magnetic Properties |
Instrumental Methods
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Fourier transforms for chemists. Part 2. Fourier transforms in chemistry and spectroscopy Glasser, L.
Considers the number of data channels in a spectrometer, the dispersive element as a delay device, the Fourier transform technique and its advantages, the fast Fourier transform technique and its advantages, and applications of these techniques to chemistry.
Glasser, L. J. Chem. Educ. 1987, 64, A260.
Fourier Transform Techniques |
Spectroscopy |
Instrumental Methods |
IR Spectroscopy |
NMR Spectroscopy
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X-ray fluorescence spectrometric analysis of geologic materials Part 1. Principles and instrumentation Anzelmo, John A.; Lindsay, James R.
Complete summary of XRF spectroscopy as applied to the chemical analysis of geologic specimens, including principles, production of X-rays, interaction with matter, detectors, and analysis of data.
Anzelmo, John A.; Lindsay, James R. J. Chem. Educ. 1987, 64, A181.
Spectroscopy |
Geochemistry
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Introduction to the interpretation of electron spin resonance spectra of organic radicals Bunce, Nigel J.
Principles and applications of electron spin resonance; this article is addressed directly to undergraduates rather than their instructors.
Bunce, Nigel J. J. Chem. Educ. 1987, 64, 907.
Spectroscopy |
Instrumental Methods
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Using NASA and the space program to help high school and college students learn chemistry. Part II. The current state of chemistry in the space program Kelter, Paul B.; Snyder, William E.; Buchar, Constance S.
Examples and classroom applications in the areas of spectroscopy, materials processing, and electrochemistry.
Kelter, Paul B.; Snyder, William E.; Buchar, Constance S. J. Chem. Educ. 1987, 64, 228.
Astrochemistry |
Spectroscopy |
Materials Science |
Electrochemistry |
Crystals / Crystallography
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Attenuation of gamma rays in binary compounds: A versatile illustration of Beer's law Kleppinger, E. W.; Yates, S. W.
An experiment, based on depth-gauging principles, that uses gamma radiation to illustrate Beer's law.
Kleppinger, E. W.; Yates, S. W. J. Chem. Educ. 1987, 64, 172.
Spectroscopy |
Solutions / Solvents |
Nuclear / Radiochemistry
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Triboluminescence spectroscopy of common candies Zink, Jeffrey I.; Angelos, Rebecca; Hardy, Gordon E.
Experimental methods of measuring spectra and the origins of triboluminescence; includes spectra data for spearmint, peppermint, and wintergreen Lifesavers.
Zink, Jeffrey I.; Angelos, Rebecca; Hardy, Gordon E. J. Chem. Educ. 1979, 56, 413.
Photochemistry |
Spectroscopy
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Fourier transform methods in spectroscopy Marshall, Alan G.; Comisarow, Melvin B.
Presents illustrative spectral lineshapes and draws an experimental example from Fourier transform ion cyclotron resonance spectroscopy.
Marshall, Alan G.; Comisarow, Melvin B. J. Chem. Educ. 1975, 52, 638.
Spectroscopy |
Fourier Transform Techniques
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Flames: A study in molecular spectroscopy Ashby, Richard A.
Presents the spectra of a few flames and, with their aid, shows how most of the fundamental principles of molecular spectroscopy can be demonstrated.
Ashby, Richard A. J. Chem. Educ. 1975, 52, 632.
Spectroscopy
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Fourier Transform Spectrometers - Part Two Low, M. J. D.
Surveys available commercial IR and UV spectrometers.
Low, M. J. D. J. Chem. Educ. 1970, 47, A255.
Instrumental Methods |
Spectroscopy |
Laboratory Equipment / Apparatus |
Fourier Transform Techniques |
IR Spectroscopy |
UV-Vis Spectroscopy
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Analysis of complex NMR spectra for the organic chemist. I. Second-order approach with specific application to the two spin system Garbisch, Edgar W., Jr.
Complex spectra of systems containing up to four spins can often be analyzed satisfactorily by hand and offer advantages at the instructive level.
Garbisch, Edgar W., Jr. J. Chem. Educ. 1968, 45, 311.
Spectroscopy |
NMR Spectroscopy
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Applications of spectroscopy to organic chemistry (Brand, J. C. D.; Eglinton, G.) Lehmann, Walter J.
Lehmann, Walter J. J. Chem. Educ. 1967, 44, A552.
Spectroscopy
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Spectroscopy (Whiffen, D. H.) Hollenberg, J. Leland
Hollenberg, J. Leland J. Chem. Educ. 1967, 44, A551.
Spectroscopy
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Instrumentation teaching equipment. Part three: Miscellaneous Eisner, Leonard
Considers magnetic resonance spectroscopy, magnetic susceptibility, atomic beam spectroscopy, mass spectrometers, chromatography, electrochemistry, electron diffraction, field emission microscopes, glass blowing and vacuum systems, high and low temperatures, and ultrasonics.
Eisner, Leonard J. Chem. Educ. 1964, 41, A607.
NMR Spectroscopy |
Spectroscopy |
Instrumental Methods |
Mass Spectrometry |
Magnetic Properties |
Chromatography |
Electrochemistry |
Laboratory Equipment / Apparatus
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Instrumentation teaching equipment. Part one: Optical devices Eisner, Leonard
Examines the attributes of teaching equipment, teaching fundamental principles, optics and spectroscopy, and spectroscopic equipment of modular design.
Eisner, Leonard J. Chem. Educ. 1964, 41, A491.
Instrumental Methods |
Spectroscopy
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Basic concepts of nuclear chemistry (Overman, Ralph T.) Eblin, Lawrence P.
Eblin, Lawrence P. J. Chem. Educ. 1963, 40, 499.
Nuclear / Radiochemistry
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Spectroscopy. Volume 2, Ultra-violet, visible, infra-red, and Raman spectroscopy (Walker, S.; Straw, H.) Weir, C. E.
Weir, C. E. J. Chem. Educ. 1963, 40, 443.
Spectroscopy |
UV-Vis Spectroscopy |
IR Spectroscopy |
Raman Spectroscopy
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Nuclear magnetic resonance spectroscopy Roberts, J. D.
Presents nuclear magnetic spectroscopy in a manner that makes it suitable for presentation to undergraduates.
Roberts, J. D. J. Chem. Educ. 1961, 38, 581.
NMR Spectroscopy |
Spectroscopy
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The reduction of carbon dioxide Hollander, Jerome; Spialter, Leonard
Examines the reduction of carbon through a variety of processes, including catalytic hydrogenation, reduction by metals and complex metal hydrides, electrochemical reduction, and reduction under the influence of radiation.
Hollander, Jerome; Spialter, Leonard J. Chem. Educ. 1958, 35, 446.
Reactions |
Oxidation / Reduction |
Catalysis |
Metals |
Electrochemistry |
Nuclear / Radiochemistry
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Tracer isotopes in biochemistry Bergen, Catherine M.
Describes some of the history behind the isolation and detection of isotopes, as well as their use in metabolic and other biochemical studies.
Bergen, Catherine M. J. Chem. Educ. 1952, 29, 84.
Nuclear / Radiochemistry |
Isotopes |
Metabolism
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