Radical pair and triplet state dynamics of a photosynthetic reaction-center model embedded in isotropic media and liquid crystals

Journal of the American Chemical Society

Volumn 118, Issue 42, 1996, Pages 10228-10235

  Hasharoni, Kobi ^a   Levanon, Haim ^a   Greenfield, Scott R ^b   Gosztola, David J ^b   Svec, Walter A ^b   Wasielewski, Michael R ^b,c  

^a HEBREW UNIVERSITY OF JERUSALEM   (Israel)

^b ARGONNE NATIONAL LABORATORY   (United States)

^c NORTHWESTERN UNIVERSITY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ARTICLE; LIQUID CRYSTAL; MOLECULAR DYNAMICS; PHOTOCHEMISTRY;

EID: 0029963384     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja961919e     Document Type: Article

References (45)

1. (a) Joran, A. D.; Leland, B. A.; Felker, P. M.; Zewail, A. H.; Hopfield, J. J.; Dervan, P. B. Nature 1987, 327, 508.
2. (b) Wasielewski, M. R. Chem. Rev. 1992, 92, 435.
3. (c) Gust, D.; Moore, T. A.; Moore, A. L. Acc. Chem. Res. 1993, 26, 198.
4. Hasharoni, K.; Levanon, H.; Greenfield, S. R.; Gosztola, D. J.; Svec, W. A.; Wasielewski, M. R. J. Am. Chem. Soc. 1995, 117, 8055.
5. (a) Gaines, G. L.; O'Neil, M. P.; Svec, W. A.; Niemczyk, M. P.; Wasielewski, M. R. J. Am. Chem. Soc. 1991, 113, 719.
6. (b) Alexiou, M. S.; Tychopoulos, V.; Ghorbanian, S.; Tyman, J. H. P.; Brown, R. G.; Brittain, P. I. J. Chem. Soc. Perkin Trans. 2 1990, 837.
7. (c) Hester, R. A.; Williams, K. P. J. J. Chem. Soc., Perkin Trans. 2 1982, 559.
8. (d) Viehbeck, A.; Goldberg, M. J.; Kovac, C. A. J. Electrochem. Soc. 1990, 137, 1460.
9. Dutton, P. L.; Leigh, J. S.; Seibert, M. Biochem. Biophys. Res. Commun. 1972, 46, 406.
10. Regev, A.; Nechushtai, R.; Levanon, H.; Thornber, J. P. J. Phys. Chem. 1989, 93, 2421.
11. Rutherford, A. W.; Paterson, D. R.; Mullet, J. E. Biochim. Biophys. Acta 1981, 635, 205.
12. The minimum-energy geometry of ABC was determined from an INDO calculation with HyperChem (Hypercube Inc.).
13. Regev, A.; Levanon, H.; Murai, T.; Sessler, J. L. J. Chem. Phys. 1990, 92, 4718.
14. (a) Hasharoni, K.; Levanon, H.; von Gersdorff, J.; Kurreck, H.; Möbius, K. J. Chem. Phys. 1993, 98, 2916.
15. (b) Hasharoni, K.; Levanon, H.; Gätschmann, J.; Schubert, H.; Kurreck, H.; Möbius, K. J. Phys. Chem. 1995, 99, 7514.
16. (c) Hasharoni, K.; Levanon, H. J. Phys. Chem. 1995, 99, 4875.
17. (d) Levanon, H.; Hasharoni, K. Prog. Reaction Kinetics 1995, 20, 1995.
18. Greenfield, S. R.; Svec, W. A.; Gosztola, D. J.; Wasielewski, M. R. J. Am. Chem. Soc. 1996, 118, 6767-6777.
19. 5 (8%). The composition of ZLI-4389 is not available.
20. The soft crystalline is an intermediate phase found in the vicinity of the melting point. It is characterized by some molecular motion of both the solvent and the solute. The transition temperatures of this phase may be estimated from the appearance of TREPR spectra that are the result of solvent-controlled electron transfer. This phase is discussed throughout the text.
21. Gonen, O.; Levanon, H. J. Phys. Chem. 1985, 89, 1637.
22. Regev, A.; Galili, T.; Levanon, H. J. Chem. Phys. 1991, 95, 7907.
23. (a) Fajer, P. G.; Bennett, R. L. H.; Polnaszek, C. F.; Fajer, E. A.; Thomas, D. D. J. Magn. Reson. 1990, 88, 111.
24. (b) Press, W. H.; Flannery, B. P.; Teukolsky, S. A.; Veterling, W. T. Numerical Recipes. The art of scientific computing, 1st ed.; Cambridge University Press: Cambridge. 1986.
25. Zhong, C. J.; Kwan, W. S. V.; Miller, L. L. Chem. Mater. 1992, 4, 1423.
26. At high temperatures, in the liquid nematic phase of the LC, the perpendicular orientation is not observed because of the fast alignment of the chromophore to the parallel orientation (see ref 8).
27. Miller, L. L., Zhong, C. J.; Kasai, P. J. Am. Chem. Soc. 1993, 115, 5982.
28. Gonen, O.; Levanon, H. J. Phys. Chem. 1984, 88, 4223.
29. Kay, C. W. M.; Di valnetin, M.; Möbius, K. Sol. Energy Mater. Sol. Cells 1995, 38, 111.
30. Levanon, H.; Norris, J. R. Chem. Rev. 1978, 78, 185.
31. Thurnauer, M. C. Rev. Chem. Intermed. 1979, 197.
32. -7 s).
33. Determined by measuring the out-of-phase emission using a fluorimeter (PTI) with the excitation light chopped at 200 Hz.
34. (a) Krebs, P.; Sackmann, E.; Schwarz, J. Chem. Phys. Lett. 1971, 8, 417.
35. (b) Sackmann, E. In Applications of Liquid Crystals; Meier, G., Sackmann, E., Grabmaier, J. G., Eds.; Springer-Verlag: Berlin, 1975; pp 21-81.
36. Pedersen, J. B. FEBS Lett. 1979, 97, 305.
37. Norris, J. R.; Morris, A. L.; Thurnauer, M. C.; Tang. J. J. Chem. Phys. 1990, 92, 4239.
38. Hore, P. J.; Hunter, D. A.; McKie, C. D.; Hoff, A. J. Chem. Phys. Lett. 1987, 137, 495.
39. Closs, G. L.; Forbes, M. D. E.; Norris, J. R. J. Phys. Chem. 1987, 91, 3592.
40. Morris, A. L.; Norris, J. R.; Thurnauer, M. C. In Biophysics; Michel-Beyerle, M. E., Ed.; Springer-Verlag: Berlin, 1990; Vol. 6, pp 423-434.
41. Hore, P. J. In Advanced EPR. Applications in biology and biochemistry; Hoff, A. J., Ed.; Elsevier: Amsterdam, 1989; pp 405-440.
42. Stehlik, D.; Bock. C. H.; Petersen, J. J. Phys. Chem. 1989, 93, 1612.
43. 0 and λ are constants: Molin, Yu. N.; Salikhov, K. M.; Zamaraev, K. M. Spin Exchange, Principles and Applications in Chemistry and Biology, Springer-Verlag: Heidelberg, 1980; pp 34-35. Although the exact mechanism dictating the rate of fall off is not yet fully understood, based on the experimental data, the assumption that J = 0 for a spin-spin separation of 24 Å is reasonable and meets with previous studies (ref 9, above).
44. Salikhov, K. M.; Molin, Y. N. J. Phys. Chem. 1993, 97, 13259.
45. Lendzian, F.; von Maltzan, B. Chem. Phys. Lett. 1991, 180, 191.