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Photoelectron spectroscopy of 7-azaindole—water cluster anions

  • A. Nakajima
  • Y. Negishi
  • R. Hasurni
  • K. Kaya
Conference paper

Abstract

The 7-azaindole (7-AzI) cluster anions and their H2O adducts were generated by electron attachment to the 7-AzI/7-AzI-H2O clusters, and their electronic properties studied with mass spectrometry and photoelectron spectroscopy. In the mass spectra of the 7-AzI cluster anions, (7-AzI) n , monomer anions were missing clue to negative electron affinity (EA), while clusters (n ≥ 2) have positive EA, and those having even n were more abundant than those at odd n. EA increased with cluster size from 0.88 eV at n = 2, and an even-odd alternation in the EA was seen. The even-odd alternation showed that the 7-AzI dirtier acts as a unit for cluster formation. In the photoelectron spectrum of (7-AzI) 2 at 266 nm, the second peak was observed 2,4 eV above the first peak; this is attributed to the triplet state of the neutral (7-AzI)2 Depending on the detachment energy, a movable peak, with the detachment of 420–300 nm (2.9–4.1 eV), was additionally observed between the first and the second peaks; this was thought to be caused by a delayed photoemission via an electronic excited state of the (7-AzI) 2 anion.

PACS

36.40.−c Atomic and molecular clusters 82.30.Nr Association, addition, insertion, cluster formation, hydrogen bonding 71.24.+q Electronic structure of clusters and nanoparticles 

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References

  1. 1.
    P. Schuster, G. Zundel, C. Sandorfy (Eds.): The Hydrogen Bonding Theory and Experiments ( North-Holland, New York 1976 )Google Scholar
  2. 2.
    D.H. Levy: Ann. Rev. Phys. Chem, 39, 197 (1980)ADSCrossRefGoogle Scholar
  3. 3.
    C.R. Cantor, P.R. Schimmel: Biophysical Chemistry I ( Freeman, San Francisco 1980 )Google Scholar
  4. 4.
    C.A. Taylor, M.A. El-Bayoumi, M. Kasha: Proc. Natl. Acad. Sci, USA 63, 253 (1969)ADSCrossRefGoogle Scholar
  5. 5.
    K.C. Ingham, M.A. El-Bayoumi: J. Am. Chem. Soc. 96, 1674 (1974)CrossRefGoogle Scholar
  6. 6.
    K. Tokumura, Y. Watanabe, M. Udagawa, M. Itoh: J. Am. Chem. Soc. 109, 1346 (1987)CrossRefGoogle Scholar
  7. 7.
    H. Bulska, A, Chodkowska: J. Am. Chem. Soc, 102, 3259 (1980)CrossRefGoogle Scholar
  8. 8.
    W.M. Hetherington, R.H. Micheels, K.B. Eisenthal: Chem. Phys. Lett. 66, 230 (1979)ADSCrossRefGoogle Scholar
  9. 9.
    D. McMorrow, T.J. Aartsma: Chem. Phys, Lett. 125, 581 (1986)ADSCrossRefGoogle Scholar
  10. 10.
    R.S. Moog, S.C. Bovino, J.C. Simon: J. Phys. Chem. 92, 6545 (1988)CrossRefGoogle Scholar
  11. 11.
    H. K. Puke, H. Yoshiuchi, K. Kaya: J. Phys. Chem. 88, 5840 (1984)CrossRefGoogle Scholar
  12. 12.
    K. Puke, K. Kaya: J. Phys. Chem. 93, 64 (1989)Google Scholar
  13. 13.
    C.-P. Chang, H. Wen-Chi, K. Meng-Shin, P.-T. Chou, J.H. Clements: J. Phys. Chem. 98, 8801 (1994)CrossRefGoogle Scholar
  14. 14.
    P.-T. Chou, H. Wen-Chi, C.-P. Chang, K. Meng-Shin: J. Phys. Chem. 99, 11 994 (1995)Google Scholar
  15. 15.
    A. Douhal, S.K. Kim, A.H. Zewail: Nature 378, 260 (1995)ADSCrossRefGoogle Scholar
  16. 16.
    L.A. Philips, D.H. Levy: J. Chem. Phys, 85, 1327 (1986)ADSCrossRefGoogle Scholar
  17. 17.
    L. Yu, S.C. Foster, J.M. Williamson, T.A. J. Chem. Phys, 92, 5794 (1990)Google Scholar
  18. 18.
    A. Held, D.W. Pratt: J. Am. Chem. Soc. 115, 9708 (1993)CrossRefGoogle Scholar
  19. 19.
    G. Berden, M.L. Meerts, M. Schmitt, K. Kleinermanns: j. Chem. Phys. 104, 972 (1996)ADSCrossRefGoogle Scholar
  20. 20.
    A. Nakajima, M. Hirano, R. Hasumi, K. Kaya, C.C. Carter, J.M. Williamson, T.A. Miller: J. Phys, Chem. A 101, 392 (1997)CrossRefGoogle Scholar
  21. 21.
    O. Cheshnovsky, S.H. Yang, PL. Pettiette, M.J. Cray-craft, R. E. Smalley: Rev, Sci. Instruni. 58, 2131 (1987)ADSCrossRefGoogle Scholar
  22. 22.
    G. Ganteför, K.H, Meiwes-Broer, H.O. Lutz: Phys. Rev. A 37, 2716 (1988)ADSCrossRefGoogle Scholar
  23. 23.
    IA, Walmsley: J. Phys. Chem. 85, 3181 (1981)CrossRefGoogle Scholar
  24. 24.
    A. Nakajima, F. Ono, Y. Kihara, A. Ogawa, K. Matsubara, K. Ishikawa, M. Baba, K. Kaya: Laser Chem. 15, 167 (1995)CrossRefGoogle Scholar
  25. 25.
    T. Ogata, Y. Ohshima, Y. Endo: J. Am, Chem. Soc, 117, 3593 (1995)CrossRefGoogle Scholar
  26. 26.
    H. Hotop, W.C. Lineberger: J. Phys. Chem. Ref. Data 4, 539 (1975)ADSCrossRefGoogle Scholar
  27. 27.
    V.A. Esaulov: Ann. Phys. Fr. 11, 493 (1986)ADSCrossRefGoogle Scholar
  28. 28.
    A.J. Gotch, T.S. Zwier: J. Chem. Phys. 96, 3, 388 (1992)Google Scholar

Copyright information

© Springer-Verlag Italia 1999

Authors and Affiliations

  • A. Nakajima
    • 1
  • Y. Negishi
    • 1
  • R. Hasurni
    • 1
  • K. Kaya
    • 1
  1. 1.Department of Chemistry, Faculty of Science and TechnologyKeio UniversityKohoku-ku, YokohamaJapan

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