A Short Course on Spin
Taught by Ronald Lawler and Nicholas Turro
| Background Reading | Suggested Books | Outline | Suggestions | Miscellaneous |
Background Reading
    In no particular order:

  • "Paramagnetic Interactions of Triplet Radical Pairs with Nitroxide Radicals: An "Antiscavenging" Effect"
    Step, E.N.; Buchachenko, A.L.; Turro, N.J. J. Am. Chem. Soc. 1994, 116, 5462-5466.
    Download as .pdf
    Download related .ppt (EJP)

  • "Phosphorescence and the Triplet State"
    Lewis, G.N.; Kasha, M. J. Am. Chem. Soc. 1944, 66, 2100-2116.
    Download as .pdf
    Download related .ppt (JRL)

  • "Radical pair recombination stereoselectivity as a probe of magnetic isotope and magnetic field effects"
    Lem, G.; Turro, N.J. Chem. Comm. 2000, 293-294.
    Download as .pdf
    Download related .ppt (JRL)

  • "How Spin Stereochemistry Severly Complicates the Formation of a Carbon-Carbon Bond between Two Reactive Radicals in a Supercage"
    Turro, N.J.; Buchachenko, A.L.; Tarasov, V.F. Acc. Chem. Res. 1995, 28, 69-80.
    Download as .pdf

  • "Magnetic Field and Magnetic Isotope Effects in Organic Photochemical Reactions. A Novel Probe of Reaction Mechanisms and a Method for Enrichment of Magnetic Isotopes"
    Turro, N.J.; Kraeutler, B. Acc. Chem. Res. 1980, 13, 369-377.
    Download as .pdf
    Download related .ppt (JYC)

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General Outline for Short Course on "Spin"
RGL - October 2008

Download Outline as .doc
  1. Basic Physics

    • Angular Momentum
        Vector Representation


      Quantum aspects of spin
        Spin Hamiltonian/Operators/Basis functions
        Transition probabilities
        Two-level problem

  2. Magnetic Resonance

    • Classical version
        Bloch equations

      Quantum version
        Density matrices/Heisenberg representation

        Relaxation mechanisms
        Pulsed methods

        Relaxation mechanisms
        Pulsed methods

      Double resonance
        Overhauser Effect

      Solid state and gas phase MR
        EPR of 1O2
        NMR of H2 and D2 gas
        EPR of trapped radicals/triplets

  3. Spin-dependent Chemistry and Physics

    • Radical pairs

      S-T mixing and photochemistry

      Radical-3O2 interactions

      1O2 quenching

      oH2-pH2 conversion

      Effects of external fields

      Magnetic isotope effects

  4. What do you want to learn from the course?

    • Summary of topics about spin

      Explanation of theoretical and experimental aspects of spin
        Origin of NMR and EPR parameters
        Spectra-structure correlations
        BPP theory of relaxation
        Redfield/Bloch/Hubbard/Freed theories of relaxation
        Formulation of multiple-pulse methods

      Qualitative models for spin phenomena
        Vector models
        Energy level diagrams

      Quantitative analysis and modeling of spin phenomena
        Extraction of structure and dynamics from relaxation data
        Modeling of CIDNP and CIDEP spectra
        Simulation of powder and single-crystal spectra

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Suggestions and Questions Regarding Spin
    • I am interested in looking into examples of chemical reactions involving/governed by spin changes.

    • What is an intuitive understanding of the angular momentum of a wave?
    • What are some more of these seminal early papers that describe in clear language the intellectual development of the idea of 'spin'?
    • What are the experimental set-ups for several of the related techniques?
    • What are the possibilities/uses for spin chemistry in systems such as polymers? (quenching, prolonging triplets, others? etc.)
    • When thinking of statistical mechanical 1-D models of (correlated) spins, is there any way to actually incorporate such ideas into real systems? (just a fanciful curiosity question)

    • Section II of Ron's outline with regards to magnetic resonance as the benchmark.
    • The theory behind and mechanism of:
      1. o/p conversion
      2. 1O2 quenching
      3. magnetic isotope effect are of great interest to me
    • I want to also be able to explain theoretical and experimental aspects of spin with equations but not rigorously (section IV).
    • Also I would like to have problem sessions on end of the chapter problems in Carrington and McLachlan.
    • I want is to teach a course in Spin and come up with creative experiments of my own.

    • Paramagnatism/Diamagnetism
    • What is EPR or ESR theory?
    • How does one interpret the Nuclear Hyperfine Structure in ESR Spectra?

    • CINDP and CIDEP
    • Kaptein's rules
    • EPR of electronically excited triplet states; spin polarized triplet states

    • MRI

    • How does spin play a role in photochemical reactions between a biradical and sugar?
    • How does S-T mixing affect the rates of photochemical reactions?
    • How can spin be used as a marker/label for polymers in various environments (different temperatures, solvents, pH, etc.)?

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