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Volumn 59, Issue 7, 1999, Pages 4839-4848

Theory of even-parity states in polyphenylenes

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EID: 0000986499     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.59.4839     Document Type: Article
Times cited : (31)

References (49)
  • 22
    • 0000965754 scopus 로고    scopus 로고
    • We do not explicitly include the notations corresponding to the charge-conjugation symmetry (CCS) that also characterize the unsubstituted polyphenylenes. However, CCS symmetry is implied throughout this work. The breaking of strict CCS in substituted systems has very weak effect on the photophysics. See M. Chandross, S. Mazumdar, M. Liess, P.A. Lane, Z.V. Vardeny, M. Hamaguchi, and K. Yoshino, Phys. Rev. B 55, 1486 (1997).
    • (1997) Phys. Rev. B , vol.55 , pp. 1486
    • Chandross, M.1    Mazumdar, S.2    Liess, M.3    Lane, P.A.4    Vardeny, Z.V.5    Hamaguchi, M.6    Yoshino, K.7
  • 26
    • 0004184756 scopus 로고
    • World Scientific, Singapore T. Kobayashi
    • S. Abe, in Relaxation in Polymers, edited by T. Kobayashi (World Scientific, Singapore, 1993), p. 215.
    • (1993) Relaxation in Polymers , pp. 215
    • Abe, S.1
  • 33
    • 0000123953 scopus 로고    scopus 로고
    • It is conceivable that the origin of the discrepancy lies in the definition of the exciton binding energy. Larger binding energies are concluded from optical experiments, which measure vertical binding energies. Smaller binding energies are inferred from experiments that measure the creation energies of charged species; see, for example, S.F. Alvarado, P.F. Seidler, D.G. Lidzey, and D.D.C. Bradley, Phys. Rev. Lett. 81, 1082 (1998). Since charged species can have considerable relaxation energies, binding energies calculated as the difference between the total energies of the cation and the anion, and the optical exciton, would be smaller (and could be measuring an indirect gap). Further work is warranted to clarify the differences between the two classes of experiments, but this has no bearing on the present work.
    • (1998) Phys. Rev. Lett. , vol.81 , pp. 1082
    • Alvarado, S.F.1    Seidler, P.F.2    Lidzey, D.G.3    Bradley, D.D.C.4
  • 34
    • 0001737830 scopus 로고
    • Z.G. Soos, S. Ramasesha, D.S. Galvão, and S. Etemad, Phys. Rev. B 47, 1742 (1993). There is a slight difference in the numbering scheme used by these authors and us for the quantum numbers of the (Formula presented) states. These authors monitor the lowest-energy states in all the subspaces, while we restrict ourselves to the subspace that is “plus” with respect to both mirror planes, i.e., to the states to which TPA can occur. Thus our (Formula presented) corresponds to the (Formula presented) within the scheme of these authors, who find that strong TPA in trans-stilbene is to their (Formula presented) and not to their (Formula presented) in agreement with us.
    • (1993) Phys. Rev. B , vol.47 , pp. 1742
    • Soos, Z.G.1    Ramasesha, S.2    Galvão, D.S.3    Etemad, S.4
  • 45
    • 0006589319 scopus 로고
    • ) and references therein.
    • P. Tavan and K. Schulten, J. Chem. Phys. 85, 6602 (1986) and references therein.
    • (1986) J. Chem. Phys. , vol.85 , pp. 6602
    • Tavan, P.1    Schulten, K.2


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.