Time-resolved (CW) electron paramagnetic resonance spectroscopy: An overview of the technique and its use in organic photochemistry

Photochemistry and Photobiology

Volumn 65, Issue 1, 1997, Pages 73-81

  Forbes, Malcolm D E ^a  

^a The University of North Carolina at Chapel Hill   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0031050581     PISSN: 00318655     EISSN: None     Source Type: Journal    
DOI: 10.1111/j.1751-1097.1997.tb01879.x     Document Type: Conference Paper

References (45)

1. Piette, L. H. (1963) A new technique for the study of rapid free radical reactions. Sixth International Symposium on Free Radicals, Cambridge Press.
2. Kevan, L. R. and M. K. Bowman (eds.) (1990) Modern Pulsed and Continuous-wave Electron Spin Resonance. Wiley, New York.
3. Weil, J. A., J. R. Bolton and J. E. Wertz (1994) Electron Paramagnetic Resonance: Elementary Theory and Applications. Wiley-Interscience, New York.
4. Poole, C. P., Jr. (1983) Electron Spin Resonance: A Comprehensive Treatise on Experimental Techniques. Wiley-Interscience, New York.
5. Hyde, J. S. and W. Fronszisch (1989) Loop gap resonators. In Advanced EPR: Applications in Biology and Biochemistry (Edited by A. J. Hoff), pp. 277-306. Elsevier, Amsterdam.
6. Salikhov, K. M., Y. N Molin, R. Z. Sagdeev and A. L. Buchachenko (1984) Magnetic Spin Effects in Chemical Reactions. Elsevier, Amsterdam.
7. Avery, E. C., J. R. Remko and B. Smaller (1968) EPR detection of the hydrated electron in liquid water. J. Chem. Phys. 59, 951.
8. Fessenden, R. W. and N. C. Verma (1976) Time resolved electron spin resonance spectroscopy. III. Electron spin resonance emission from the hydrated electron. Possible evidence for reaction to the Triplet State. J. Am. Chem. Soc. 98, 243-244.
9. Verma, N. C. and R. W. Fessenden (1976) Time resolved ESR spectroscopy. IV. Detailed measurement and analysis of the ESR time profile. J. Chem. Phys. 65, 2139-2155.
10. Trifunac, A. D., M. C. Thurnauer and J. R. Norris (1978) Submicrosecond time-resolved EPR in laser photolysis. Chem. Phys. Lett. 57, 471-473.
11. Prisner, T., O. Dobbert, K. P. Dinse and H. van Willigen (1988) FT ESR study of photoinduced electron transfer. J. Am. Chem. Soc. 110, 1622-1623.
12. Levstein, P. R. and H. van Willigen (1991) Fourier transform-electron paramagnetic resonance study of the photochemical reaction of acetone with 2-propanol. J. Chem. Phys. 95, 900-908.
13. Bowman, M. K. (1990) Fourier transform electron spin resonance. In Modern Pulsed and Continuous-wave Electron Spin Resonance. (Edited by L. R. Kevan and M. K. Bowman), pp. 1-42. Wiley, New York.
14. van Willigen, H., P. R. Levstein and M. H. Ebersole (1993) Application of Fourier transform electron paramagnetic resonance in the study of photochemical reactions. Chem. Rev. 93, 173-198.
15. Jeevarajan, A. S. and R. W. Fessenden (1992) Unusual chemically induced dynamic electron polarization of electrons produced by photoionization. J. Phys. Chem. 96, 1520-1523.
16. Jent, F., H. Paul and H. Fischer (1988) Two-photon processes in ketone photochemistry observed by time-resolved ESR spectroscopy. Chem. Phys. Lett. 146, 315-319.
17. McLauchlan, K. A. and D. G. Stevens (1988) Flash photolysis electron spin resonance. Acc. Chem. Res. 21, 54-59.
18. Salikhov, K. M., Y. N. Molin, R. Z. Sagdeev and A. L. Buchachenko (1984) Magnetic Spin Effects in Chemical Reactions, pp. 57-93. Elsevier, Amsterdam.
19. Romack, T. J., J. M. DeSimone and T. A. Treat (1995) Synthesis of tetrafluoroethylene-based nonaqueous fluoropolymers in supercritical carbon dioxide. Macromolecules 28, 8429-8431.
20. Goudsmit, G.-H., H. Paul and A. I. Shushin (1993) Electron spin polarization in radical-triplet pairs. Size and dependence on diffusion. J. Phys. Chem. 97, 13243-13249.
21. Imamura, T., O. Onitsuka and K. Obi (1986) Memory of spin polarization in triplet-doublet systems. J. Phys. Chem. 90, 6741-6744.
22. Wong, S. K., D. A. Hutchinson and J. K. S. Wan (1973) Chemically induced dynamic electron polarization. II. A general theory for radicals produced by photochemical reactions of excited triplet carbonyl compounds. J. Chem. Phys. 58, 985-989.
23. Forbes, M. D. E., S. R. Ruberu and K. E. Dukes (1994) Dynamics of spin-polarized radical pairs at the solid/solution interface. J. Am. Chem. Soc. 116, 7299-7307.
24. Closs, G. L., M. D. E. Forbes and J. R. Norris, Jr. (1987) Spinpolarized electron paramagnetic resonance spectra of radical pairs in micelles. Observation of electron spin-spin interactions. J. Phys. Chem. 91, 3592-3599.
25. Buckley, C. D., D. A. Hunter, P. J. Hore and K. A. McLauchlan (1987) Electron spin resonance of spin-correlated radical pairs. Chem. Phys. Lett. 135, 307-312.
26. Forbes, M. D. E., G. R. Schulz and N. I. Avdievich (1996) Unusual dynamics of micellized radical pairs generated from photochemically active amphiphiles. J. Am. Chem. Soc. 118, 10652-10653.
27. Khudyakov, I. V., P. F. McGarry and N. J. Turro (1993) A time-resolved electron spin resonance and laser flash spectroscopy investigation of the photolysis of benzaldehyde and benzoin in homogeneous solvents and micellar solutions. J. Phys. Chem. 97, 13234-13242.
28. Closs, G. L. and M. D. E. Forbes (1987) Observation of medium chain length polymethylene biradicals in liquid solutions by time resolved EPR spectroscopy. J. Am. Chem. Soc. 109, 6185-6187.
29. Closs, G. L. and M. D. E. Forbes (1991) EPR spectroscopy of electron spin polarized biradicals in liquid solutions. Technique, spectral simulation, scope and limitations. J. Phys. Chem. 95, 1924-1933.
30. Avdievich, N. I. and M. D. E. Forbes (1995) Dynamic effects in spin-correlated radical pair theory: J modulation and a new look at the phenomenon of alternating line widths in the EPR spectra of flexible biradicals. J. Phys. Chem. 99, 9660-9667.
31. Avdievich, N. I. and M. D. E. Forbes (1996) Strong modulation of the exchange interaction in a spin-polarized, aryl ether-linked 1,14-biradical. J. Phys. Chem. 100, 1933-1995.
32. Forbes, M. D. E., N. I. Avdievich, G. R. Schulz and J. D. Ball (1996) Chain dynamics cause the disappearance of spin-correlated radical pair polarization in flexible biradicals. J. Phys. Chem. 100, 13887-13891.
33. Wagener, K. B., J. T. Patton, M. D. E. Forbes, T. L. Myers and H. D. Maynard (1993) Acyclic diene metathesis (ADMET) polymerization: the synthesis of unsaturated polyketones. Polym. Int. 32, 411-415.
34. Forbes, M. D. E., T. L. Myers, J. T. Patton, K. B. Wagener and H. D. Maynard (1992) Direct observation of polymeric radicals and biradicals by time-resolved EPR spectroscopy. Probing polymer chain dynamics and photodegradation at the same time. Polym. Prep. (Am. Chem. Soc., Div. Polym. Chem.) 33, 883-884.
35. Forbes, M. D. E. and K. Bhagat (1993) Quantitative EPR measurement of long distance electronic interactions in two geometric isomers of an unsaturated biradical. J. Am. Chem. Soc. 115, 3382-3383.
36. Forbes, M. D. E. (1993) The effect of localized unsaturation on the scalar exchange coupling in flexible biradicals. J. Phys. Chem. 97, 3390-3395.
37. Forbes, M. D. E., J. D. Ball and N. I. Avdievich (1996) In search of through-solvent electronic coupling in flexible biradicals. J. Am. Chem. Soc. 118, 4707-4708.
38. Forbes, M. D. E., G. L. Closs, P. Calle and P. Gautam (1993) The temperature dependence of the exchange coupling in polymethylene biradicals. Conclusions regarding the mechanism of the coupling. J. Phys. Chem. 97, 3384-3389.
39. Stehlik, D., C. H. Bock and M. C. Thurnauer (1989) Transient EPR spectroscopy of photoinduced spin states in rigid matrices. In Advanced EPR: Applications in Biology and Biochemistry (Edited by A. J. Hoff), pp. 371-403. Elsevier, New York.
40. Prisner, T. F., A. van der Est, R. Bittl, W. Lubitz, D. Stehlik and K. Möbius (1995) Time-resolved W-band (95 GHz) EPR spectroscopy of Zn-substituted reaction centers of Rhodobacter sphaeroides R-26. Chem. Phys. 194, 361-370.
41. Forbes, M. D. E. (1993) A fast 35 GHz time-resolved EPR apparatus. Rev. Sci. Instrum. 64, 397-402.
42. Forbes, M. D. E. (1993) Time resolved electron paramagnetic resonance spectroscopy in the Q-band microwave region. 2. Magnetic field effects on CIDEP in radicals, biradicals, and spin-correlated radical pairs. Z. Phys. Chem. 182, 63-76.
43. Forbes, M. D. E. (1992) Time resolved electron paramagnetic resonance spectroscopy in the Q-band microwave region. J. Phys. Chem. 96, 7836-7839.
44. Forbes, M. D. E., J. C. Barborak, K. E. Dukes and S. R. Ruberu (1994) Photodegradation of alternating p-butylstyrenyl and exonorbornyl-CO copolymers studied by multiple frequency time-resolved EPR spectroscopy. Macromolecules 27, 1020-1026.
45. Avdievich, N. I., K. E. Dukes, M. D. E. Forbes, and J. M. DeSimone (1997) Time-Resolved EPR study of a 1,9-flexible biradical dissolved in liquid Carbon Dioxide. Observation of a new spin relaxation phenomenon: Alternating intensities in spin-correlated radical pair spectra. J. Phys. Chem. (In press)