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Volumn 107, Issue 1, 2003, Pages 37-43

Optical spectroscopy of isolated and aggregate hexabenzocoronene derivatives: A study of self-assembling molecular nanowires

Author keywords

[No Author keywords available]

Indexed keywords

AGGLOMERATION; DERIVATIVES; GROUND STATE; LUMINESCENCE; SELF ASSEMBLY; SPECTROSCOPY;

EID: 0037426780     PISSN: 10895647     EISSN: None     Source Type: Journal    
DOI: 10.1021/jp0262618     Document Type: Article
Times cited : (48)

References (19)
  • 4
    • 0004154179 scopus 로고    scopus 로고
    • Ph.D. Thesis, Radiation Chemistry Department of the Interfaculty Reactor Institute, Delft Institute of Technology, The Netherlands, June
    • van der Craats, A. M. Charge Transport in Self-Assembling Discotic Liquid Crystalline Materials, Ph.D. Thesis, Radiation Chemistry Department of the Interfaculty Reactor Institute, Delft Institute of Technology, The Netherlands, June 2000.
    • (2000) Charge Transport in Self-Assembling Discotic Liquid Crystalline Materials
    • Van der Craats, A.M.1
  • 7
    • 0012507087 scopus 로고    scopus 로고
    • note
    • -1.
  • 10
    • 0012510668 scopus 로고    scopus 로고
    • note
    • Isolated molecules have fewer nonradiative pathways available to them than aggregates and thus have higher photoluminescence quantum efficiencies. A similar aggregation rate with increasing concentration was found for both derivatives from luminescence vs concentration plots. These plots also indicate that the aggregate's luminescence quantum efficiency is ∼0.00005% that of the isolated molecule's luminescence quantum efficiency.
  • 11
    • 0012604672 scopus 로고    scopus 로고
    • note
    • The overall intensity increases making them observable.
  • 12
    • 0012598479 scopus 로고    scopus 로고
    • note
    • 12 blue-shift.
  • 13
    • 0012506964 scopus 로고    scopus 로고
    • note
    • -13 s. Most electronic transitions are therefore completed before the nuclei have altered their spatial position to accommodate the new charge distribution, so the transitions are termed "vertical" or "Franck-Condon transitions". This relaxation of the nuclear positions is responsible for the Stokes shift.
  • 17
    • 0012559202 scopus 로고    scopus 로고
    • note
    • 8,2 by S. O'Flaherty (not published). However, when thermalised at room temperature, the molecule can be approximated as planar and hence has no permanent dipole moment.
  • 18
    • 0012506111 scopus 로고    scopus 로고
    • note
    • f* (e.g., 0-0, 0-1, 0-2, etc...). The first number always applies to the ground electronic level, and the last number applies to the excited electronic state. In this way, light emission can be described as 0-0, 1-0, 2-0, etc...


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.