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| PETER L. RINALDI |
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Professor
Director, Molecular Spectroscopy Lab
B.S., 1974, Polytechnic Institute of New York
Ph.D., 1978, University of Illinois at Urbana-Champaign
NIH Postdoctoral fellow, 1978-1980, Florida State University
Assistant Professor, 1980-1983, Case Western Reserve University
Varian Associate, 1983-1987 |
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Office: KNCL 108
(330) 972-5990
(330) 972-5256 Fax |
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Lab: KNCL 106
(330) 972-7352 |
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| Email: rinaldi@uakron.edu |
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| Website: MAG-NET |
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| Research Interests |
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Research in my group involves the development of new NMR techniques, applications of computers/networking/data processing in NMR spectroscopy, and novel applications of modern, multidimensional and multiple resonance NMR methods to problem solving in polymer, inorganic, organic and biological chemistry. A special emphasis is place on the development and use of NMR methods for the characterization of the three-dimensional structures of synthetic macromolecules. While there is an opportunity to do synthetic chemistry, emphasis is placed on collaborative interactions, so group members can focus on mastering the many NMR methods available for problem solving. Extensive collaborative interactions exist with a number of synthetic polymer, inorganic, organic and biological chemists who prepare and provide materials for study.
NMR Studies of Polymer Structure
Ordered polymers have become extremely important in recent years. The order in liquid crystalline polymers imparts important properties on the materials where they form, including strength, anisotropic optical and mechanical properties, and desirable processing properties. Dendrimers and other nanostructures also are of considerable interest, and promise to provide molecular scale devices for many future applications. Recent work on the preparation, characterization and use of these materials requires good analytical methods for the determination of their three-dimensional structures. NMR methods have contributed significantly to our understanding of the three-dimensional structures and functions of biological macromolecules. However, applications of these methods to the study of synthetic macromolecules have been rare. In our group, we have established a new research area by developing a suite of multidimensional NMR techniques for studying the primary, secondary and tertiary structures of synthetic macromolecules. These methods involve the use of all the latest advances in NMR, including multiple resonance, pulsed field gradient spectroscopy, shaped pulses and advanced data processing techniques. The methods are being used to study the three-dimensional solution structures of liquid crystalline polymers, star-branched polymers, dendrimers, and other nanostructures of scientific and commercial importance.
NMR Studies of Polymer Reactivity
Solution state multidimensional NMR, triple resonance NMR and selective isotopic labeling are being used to study a variety of problems involving polymer structure and reactivity. Some problems in polymer chemistry require a detailed knowledge of the structures of chain defects, block junctions, or chain ends. NMR techniques being developed in my group have been combined with selective incorporation of isotopic labels to solve these previously intractable problems. Chain-end structures provide a knowledge of the initiation and termination processes in polymer chemistry, and in some cases, give us information about the relative stabilities of different materials. A knowledge of the number and structure of defects in a polymer chain provide information that is correlated with the polymerÕs properties and can lead to syntheses of materials with better properties and performance.
Other
A number of other projects are available which use both solution and solid state NMR methods to study problems in inorganic, organic and polymer chemistry. Some of these are represented by the publications listed below.
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| Selected Publications |
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M. Monwar, S.K. Sahoo, E.F. McCord, S. Arthur, D.J. Walsh, P.L. Rianldi. 3-D-NMR Studies of B-centered n-ad Structures in Poly(ethylene-co-13C-n-butlylacrylate-co-carbon monoxide), Macromolecules, 39, 2996-2899 2006.
A. Alhamri, S.K. Sahoo, M. Monwar, E.F. McCord, S. Arthur, D.J. Walsh, P.L. Rinaldi. 3-D –NMR Studies of C0centered n-ad Structures inPoly(ethylene-co-n-
Butlylacrylate-co-13C-carbon monoxide), Macromolecules, 39, 5768-5776 2006.
J.C. Garrison, M.J. Panzner, P.D. Custer, V. Dudipala, P.L. Rinaldi, C.A. Tessier, W. J. Youngs. Synthesis and Characterization of a Novel Trigonal Bipyramidal Supramolecular Cage Based Upon Rhodium and Platinum Metal Centers. Chem. Commun., 4644-4646, 2006.
1. MP. L. Rinaldi, Polymer Characterization by Three Dimensional, Solution NMR, in "NMR Spectroscopy of Polymers in Solution and in the Solid State", ACS Symposium Series, Eds. H. N. Cheng and A. D. English, 834, 94, (2003).
2. W. Liu, P. L. Rinaldi, L. Galya, J. E. Hansen and L. Wilczek, Characterization of Isomeric Structures in a Mixture of Organosilanes Using Multidimensional NMR, Organometallics, 21, 3250 (2002).
3. Y. Nishikawa, B. Dmochowska, J. Madaj, J. Xue, Z-W. Guo, M. Satake, V. D. Reddy, P. L. Rinaldi, and V. Monnier, Vitamin C metabolomic mapping in experimental diabetes probed with 6-deoxy-6-fluoro-ascorbic acid and high resolution 19F-NMR spectroscopy, Metabolism, Clinical and Experimental, 52, 760-770, (2003).
4. M. Satake, B. Dmochowska, Y. Mishikawa, J. Madaj, J. Xue, Z. Guo, V. D. Reddy, P. L. Rinaldi and V. Monnier, Vitamin C Metabolomic Mapping in the Lens with 6-Deoxy-6-fluoro-ascorbic Acid and High Resolution 19F-NMR spectroscopy, Investigative Ophthalmology and Visual Sciences, 44, 2047-58 (2003).
5. S. K. Sahoo, T. Zhang, D. V. Reddy, P. L. Rinaldi, L. H. McIntosh, and R. P. Quirk, Multidimensional NMR Studies of Poly(ethylene-co-1-butene) Microstructure, Macromolecules, 36, 4017 (2003).
6. M. Monwar, S. K. Sahoo, P. L. Rinaldi, E. F. McCord, D. R. Marshall, M. Buback and H. Latz, A 3D-NMR Method for Studying Hydrocarbon-Based Polymer Structures, Macromolecules, 36, 6695-97 (2003).
7. S. K. Sahoo, E. McCord, P. L. Rinaldi A Suite of 3D-NMR Methods for Studying Hydrocarbon-Based Structures in and Complex Organic Molecules, J. Magn. Resonance,168, 352-357 (2004).
8. P. L. Rinaldi, 3D-NMR of Synthetic Macromolecules, Analyst, 129, 687-99 (2004).
9. D. Bannerjee, M. A. C. Broeren, M. H. P. Van Genderen, E. W. Meijer and P. L. Rinaldi, An NMR Study of the Supramolecular Chemistry of Modified Poly(propylene imine) Dendrimers, Macromolecules, 37, 8313-8318 (2004).
10. A. Alhamri, M. Monwar, S. J. Oh, P. L. Rinaldi, E. F. McCord, R. A. Hutchinson, M. Buback and H. Latz, Characterization of Carbon Monoxide Centered Triads in Poly(n-butyl acrylate-co-carbon monoxide-co-ethylene) by Isotopic Labeling and Two-Dimensional NMR, Macromolecular Chemistry and Physics, 206, 1520-1529 (2005).
11. M. Monwar, S. K. Sahoo, E. F. McCord, S. Arthur, D. J. Walsh, P. L. Rinaldi, 3D-NMR Studies of B-centered n-ad Structures in Poly(ethylene-co-13C-n-butlylacrylate-co-carbon monoxide), Macromolecules, 39, 2886-2899 (2006).
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