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Award Abstract #1228325

MRI: Acquisition of an Electron Paramagnetic Resonance (EPR) Spectrometer for Research and Education in Chemistry and Physics

NSF Org: CHE
Division Of Chemistry
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Initial Amendment Date: August 30, 2012
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Latest Amendment Date: August 30, 2012
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Award Number: 1228325
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Award Instrument: Standard Grant
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Program Manager: Robert Kuczkowski
CHE Division Of Chemistry
MPS Direct For Mathematical & Physical Scien
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Start Date: September 1, 2012
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End Date: August 31, 2015 (Estimated)
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Awarded Amount to Date: $225,035.00
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Investigator(s): Luis Echegoyen echegoyen@utep.edu (Principal Investigator)
Dino Villagran (Co-Principal Investigator)
Juan Noveron (Co-Principal Investigator)
Cristian Botez (Co-Principal Investigator)
Michael Eastman (Co-Principal Investigator)
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Sponsor: University of Texas at El Paso
ADMIN BLDG RM 209
El Paso, TX 79968-0001 (915)747-5680
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NSF Program(s): MAJOR RESEARCH INSTRUMENTATION
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Program Reference Code(s): 100E, 1108, 1189, 1948
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Program Element Code(s): 1189

ABSTRACT

With this award from the Major Research Instrumentation (MRI) program, Professor Luis Echegoyen from the University of Texas El Paso and colleagues Juan Noveron, Michael Eastman, Cristian Botez and Dino Villagran will acquire an electron paramagnetic resonance (EPR) spectrometer. The proposal is aimed at enhancing research training and education at all levels, especially in areas such as (a) synthesis of and sampling the highest occupied and the lowest unoccupied molecular orbitals (HOMO and LUMO) of endohedral metallofullerenes (EMFs) and their derivatives; (b) parallel proton-coupled electron transfer (PCET) with dimolybdenum bimetallic units; (c) understanding the electronic structure of Ru2(5+) dimers; (d) coordination chemistry of paramagnetic centers in metal-organic supramolecular nanomaterials; (e) cyanide polymers; and (f) magnetic behavior of metal oxide nanoparticle ensembles.

EPR spectrometers detect electrons, more specifically, the energy necessary to excite an electron to a higher quantized energy state. This occurs when the spectrometer provides the energy necessary to flip the spin of an unpaired electron in the presence of an applied magnetic field. This information provides insight into the electronic structure and bonding of the material being studied, which can be utilized to understand its properties and how it might be used or improved. This spectrometer will provide faculty and research students with modern instrumentation not currently available at the institution advancing their research projects significantly. It will be used in an undergraduate laboratory course providing training in this analytical technique to large numbers of Hispanic-American students at an institution with a 78% undergraduate student body of Hispanic origin.


PUBLICATIONS PRODUCED AS A RESULT OF THIS RESEARCH

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Chiarella, Gina; Cotton, F. Albert; Murillo, Carlos; Ventura, Karen; Villagrán, Dino; Wang,. "Manipulating Magnetism: Naked Ru25+ Paddlewheels Devoid of Axial Interactions," J. Am. Chem. Soc., v.136, 2014, p. 9580. 

Chiarella, Gina; Cotton, F. Albert; Murillo, Carlos; Ventura, Karen; Villagrán, Dino; Wang, Xiaoping. "Manipulating Magnetism: Naked Ru25+ Paddlewheels Devoid of Axial Interactions," J. Am. Chem. Soc, v.136, 2014, p. 9580. 

Ventura, Karen; Veleta, Jose M.; Metta-Magaña, Alejandro; Villagrán, Dino. "Stabilization of a W26+ Bimetallic Complex Supported by Two N,N?,N?? Triphenylguanidinate Ligands," Inorg. Chim. Acta., v.424, 2015, p. 286. 

Alexey A. Popov, Anastasia D. Pykhova, Ilya N. Ioffe, Fang-Fang Li, and Luis Echegoyen. "Anion Radicals of Isomeric [5,6] and [6,6] Benzoadducts of Sc3N@C80: Remarkable Differences in Endohedral Cluster Spin Density and Dynamics," J. Am. Chem. Soc., v.136, 2014, p. 13436. 

 

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