Optical control of photogenerated ion pair lifetimes: An approach to a molecular switch

Science

Volumn 274, Issue 5287, 1996, Pages 584-587

  Debreczeny, Martin P ^a   Svec, Walter A ^a   Wasielewski, Michael R ^a,b  

^a ARGONNE NATIONAL LABORATORY   (United States)

^b NORTHWESTERN UNIVERSITY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ARTICLE; CHEMICAL REACTION; ELECTRIC FIELD; ELECTRON TRANSPORT; ION PAIR EXTRACTION; KINETICS; OPTICS; PHOTOCHEMISTRY; PRIORITY JOURNAL;

EID: 0029827310     PISSN: 00368075     EISSN: None     Source Type: Journal    
DOI: 10.1126/science.274.5287.584     Document Type: Article

References (32)

1. J. J. Hopfield, J. N. Onuchic, D. N. Beratan, Science 241, 817 (1988).
2. J.-M. Lehn, Angew. Chem. Int. Ed. Engl. 27, 89 (1988).
3. M. Mehring, in Electronic Properties of Conjugated Polymers III, vol. 91 of Springer Series in Solid-State Sciences, M. Mehring and S. Roth, Eds. (Springer-Verlag, Berlin, 1989), pp. 242-249.
4. M. P. O'Neil et al., Science 257, 63 (1992).
5. M. R. Wasielewski, Chem. Rev. 92, 435 (1992).
6. R. W. Wagner, J. S. Lindsey, J. Seth, V. Palaniappan, D. F. Bocian, J. Am. Chem. Soc. 118, 3996 (1996).
7. A. Aviram and M. A. Ratner, Chem. Phys. Lett. 29, 277 (1974).
8. A. Aviram, J. Am. Chem. Soc. 110, 5687 (1988).
9. A. Broo, Chem. Phys. 169, 135 (1993).
10. J. M. Tour, R. Wu, J. S. Schumm, J. Am. Chem. Soc. 113, 7064 (1991).
11. F. Gamier, G. Horowitz, X. Peng, D. Fichou, Adv. Mater. 2, 592 (1990).
12. J. R. Sambles and A. S. Martin, Phys. Scr. 149, 718 (1993).
13. H. Kuhn, Pure Appl. Chem. 53, 2105 (1985).
14. E. G. Wilson, Jpn. J. Appl. Phys. 34, 3775 (1995).
15. E. Galoppini and M. A. Fox, J. Am. Chem. Soc. 118, 2299 (1996).
16. D. Gosztola, H. Yamada, M. R. Wasielewski, ibid. 117, 2041 (1995).
17. M. P. Debreczeny, W. A. Svec, M. R. Wasielewski, New J. Chem. 20, 735 (1996).
18. 4, distilled, and stored under nitrogen.
19. + state.
20. A. Viehbeck, M. J. Goldberg, C. A. Kovac, J. Electrochem. Soc. 137. 1460 (1990).
21. A. Osuka et al., J. Am. Chem. Soc. 115, 9439 (1993).
22. M. Gouterman, in The Porphyrins, D. Dolphin, Ed. (Academic Press, New York, 1978), vol. 3, pp. 1-165.
23. 2 chromophore, which has a lower absorption cross section and was typically excited with lower pump intensities, was in the regime where the magnitude of the observed transient absorption signal was linear with the pump intensity.
24. D'A is the lowest estimated energy for the ion pair states because these states should be destabilized somewhat within the lower polarity solvent 1,4-dioxane. The exact magnitude of this destabilization is difficult to assess because 1,4-dioxane has higher order multipole moments in its charge distribution [J. Warman et al., Chem. Phys. 170, 359 (1993)].
25. + to the ground state.
26. W. Liptay, in Excited States, E. C. Lim, Ed. (Academic Press, New York, 1974), pp. 129-229.
27. R. A. Marcus. J. Chem. Phys. 43, 679 (1965).
28. J. Jortner, ibid. 64, 4860 (1976).
29. 2. The molecular mechanics calculations were performed using a modified MM2 model within Hyperchem (Hypercube, Waterloo, Ontario). Coulomb energies in 1,4-dioxane were related to in vacuo energies by means of the spherical cavity approximation [W. Liptay, in Modern Quantum Chemistry, O. Sinanoglu, Ed. (Academic Press, New York, 1965), vol. 3, pp. 45-66; C. J. F. Böttcher, Theory of Electric Polarization (Elsevier Scientific, Amsterdam, ed. 2, 1973), vol. 1].
30. 2. The molecular mechanics calculations were performed using a modified MM2 model within Hyperchem (Hypercube, Waterloo, Ontario). Coulomb energies in 1,4-dioxane were related to in vacuo energies by means of the spherical cavity approximation [W. Liptay, in Modern Quantum Chemistry, O. Sinanoglu, Ed. (Academic Press, New York, 1965), vol. 3, pp. 45-66; C. J. F. Böttcher, Theory of Electric Polarization (Elsevier Scientific, Amsterdam, ed. 2, 1973), vol. 1].
31. A. Farazdel, M. Dupuis, E. Clementi, A. Aviram, J. Am. Chem. Soc. 112, 4206 (1990).
32. Supported by the Office of Computational and Technological Programs, Division of Advanced Energy Projects, U.S. Department of Energy, under contract W-31-109-ENG-38.