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Sutton, Sarah C.; Cleland, Walter E.; Hammer, Nathan I. – Journal of Chemical Education, 2017
This advanced undergraduate chemistry laboratory exercise takes advantage of the unique spectroscopic properties of the free radical chlorine dioxide to allow for a direct comparison of its symmetric stretch in both the ground and excited states. It incorporates several subject areas covered in an undergraduate chemistry degree (synthesis,…
Descriptors: Chemistry, College Science, Undergraduate Study, Science Laboratories
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Kurth, Laurie L.; Kurth, Mark J. – Journal of Chemical Education, 2014
Organic chemistry problems that interrelate and integrate synthesis with spectroscopy are presented. These synthesis-spectroscopy roadmap (SSR) problems uniquely engage second-year undergraduate organic chemistry students in the personal discovery of organic chemistry. SSR problems counter the memorize-or-bust strategy that many students tend to…
Descriptors: Spectroscopy, Synthesis, Organic Chemistry, Integrated Activities
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Parobek, David; Shenoy, Ganesh; Zhou, Feng; Peng, Zhenbo; Ward, Michelle; Liu, Haitao – Journal of Chemical Education, 2016
In this upper-level undergraduate experiment, students utilize micro-Raman spectroscopy to characterize graphene prepared by mechanical exfoliation and chemical vapor deposition (CVD). The mechanically exfoliated samples are prepared by the students while CVD graphene can be purchased or obtained through outside sources. Owing to the intense Raman…
Descriptors: Synthesis, Spectroscopy, Undergraduate Students, Hands on Science
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Reilly, Maureen K.; King, Ryan P.; Wagner, Alexander J.; King, Susan M. – Journal of Chemical Education, 2014
An undergraduate organic chemistry laboratory experiment has been developed that features a discovery-based microscale Fischer esterification utilizing a microwave reactor. Students individually synthesize a unique ester from known sets of alcohols and carboxylic acids. Each student identifies the best reaction conditions given their particular…
Descriptors: Undergraduate Study, College Science, Science Laboratories, Laboratory Experiments
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Edgar, Landon J. G.; Koroluk, Katherine J.; Golmakani, Mehrnaz; Dicks, Andrew P. – Journal of Chemical Education, 2014
A self-directed independent synthesis experiment was developed for a third-year undergraduate organic laboratory. Students were provided with the CAS numbers of starting and target compounds and devised a synthetic plan to be executed over two 4.5 h laboratory periods. They consulted the primary literature in order to develop and carry out an…
Descriptors: Science Instruction, College Science, Organic Chemistry, Science Laboratories
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Cooke, Jason – Journal of Chemical Education, 2019
[NiBr[subscript 2](PPh[subscript 3])[subscript 2]] and [NiBr[subscript 2](dppe)] are prepared from nickel bromide hydrate and phosphine. These brightly colored coordination compounds are then converted into the related organometallic compounds "trans"-[NiBr(Mes)(PPh[subscript 3])[subscript 2]] and [NiBr(Mes)(dppe)] (Mes =…
Descriptors: Chemistry, Science Instruction, Spectroscopy, Laboratory Experiments
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McMillan, Brian G. – Journal of Chemical Education, 2016
This experiment was designed and successfully introduced to complement the nanochemistry taught to undergraduate students in a useful and interesting way. Colloidal Ag nanoparticles were synthesized by a simple, room-temperature method, and the resulting suspension was then used to study the surface-enhanced Raman scattering (SERS) of methylene…
Descriptors: Chemistry, Science Instruction, Undergraduate Students, Teaching Methods
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Scott, Daniel; Hilt, Cole – Journal of Chemical Education, 2019
A multiweek laboratory experiment is described, which guides students to use data to make decisions through multiple steps, before reaching a final conclusion. The lab focuses on the comparisons of fluorescence and absorbance spectroscopies to determine the concentration of a desired substance in an unknown sample in consideration of a complex…
Descriptors: Spectroscopy, Inquiry, Active Learning, Critical Thinking
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Quin~ones, Rosalynn; Bayline, Jennifer Logan; Polvani, Deborah A.; Neff, David; Westfall, Tamara D.; Hijazi, Abdullah – Journal of Chemical Education, 2016
A series of undergraduate laboratory experiments that utilize reversed-phase HPLC separation, inductively coupled plasma spectroscopy (ICP), and scanning electron microscopy with energy dispersive spectroscopy (SEM-EDS) are described for the analysis of commercial sunscreens. The active ingredients of many sunscreen brands include zinc or titanium…
Descriptors: Chemistry, Undergraduate Students, College Science, Experiential Learning
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Knutson, Cassandra M.; Hilker, Abby P.; Tolstyka, Zachary P.; Anderson, Constance B.; Wilbon, Perry A.; Mathers, Robert T.; Wentzel, Michael T.; Perkins, Angela L.; Wissinger, Jane E. – Journal of Chemical Education, 2019
A versatile experiment is described for the high school and college laboratory setting based on the synthesis of biobased polymers prepared from inexpensive, renewable, and nonhazardous chemicals. Combinations of readily available citric acid, glycerol, and tapioca root starch are used to prepare three polymeric materials with different observable…
Descriptors: Secondary School Science, College Science, Chemistry, Science Experiments
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DeFrancesco, Heather; Dudley, Joshua; Coca, Adiel – Journal of Chemical Education, 2018
An undergraduate experiment for the organic laboratory is described that utilizes microwave heating to prepare 5- substituted 1H-tetrazole derivatives through a (3 + 2) cycloaddition between aryl nitriles and sodium azide. The reaction mixture is analyzed by thin layer chromatography. The products are purified through an acid-base extraction and…
Descriptors: Undergraduate Students, Organic Chemistry, Science Experiments, Laboratory Experiments
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Bigger, Stephen W.; Bigger, Andrew S.; Ghiggino, Kenneth P. – Journal of Chemical Education, 2014
The "FluSpec" educational software package is a fully contained tutorial on the technique of fluorescence spectroscopy as well as a simulator on which experiments can be performed. The procedure for each of the experiments is also contained within the package along with example analyses of results that are obtained using the software.
Descriptors: Science Instruction, Computer Software, Teaching Methods, Educational Technology
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Hopson, Russell; Lee, Po Yin Bowie; Hess, Kathless M. – Journal of Chemical Education, 2018
One dimensional (1-D)[superscript 1] H and [superscript 13]C NMR experiments are common tools used in undergraduate organic laboratories to characterize synthesized molecules. However, 1-D NMR spectra cannot always provide unambiguous structure determination. In research laboratories, advanced NMR spectroscopy methods are employed for structural…
Descriptors: Organic Chemistry, Spectroscopy, Undergraduate Students, Science Laboratories
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Bott, Tina M.; Wan, Hayley – Journal of Chemical Education, 2013
Students sometimes have difficulty grasping the importance of when and how basic distillation techniques, column chromatography, TLC, and basic spectroscopy (IR and NMR) can be used to identify unknown compounds within a mixture. This two-part experiment uses mixtures of pleasant-smelling, readily available terpenoid compounds as unknowns to…
Descriptors: Science Instruction, College Science, Undergraduate Study, Organic Chemistry
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Matsubara, Yasuo; Ito, Akitaka – Journal of Chemical Education, 2020
The lifetime of the excited state of a material is essential for characterizing its photophysical and photochemical processes and substantially affects the quantum efficiencies of its luminescence (fluorescence or phosphorescence) and photo(catalytic) reactions. However, undergraduate students are much more likely to do steady-state, rather than…
Descriptors: Undergraduate Students, College Science, Lighting, Chemistry
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