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Volumn 101, Issue 44, 1997, Pages 8865-8873

Radiative dynamics in solution and in molecular assemblies of an H-aggregate-forming stilbazolium amphiphile

Author keywords

[No Author keywords available]

Indexed keywords

ALCOHOLS; AROMATIC COMPOUNDS; CHARGE TRANSFER; COMPUTER SIMULATION; DYES; ELECTRON TRANSITIONS; EXCITONS; FLUORESCENCE; LANGMUIR BLODGETT FILMS; MONOLAYERS; MONTE CARLO METHODS; REACTION KINETICS;

EID: 0031247653     PISSN: 15206106     EISSN: None     Source Type: Journal    
DOI: 10.1021/jp9712617     Document Type: Article
Times cited : (28)

References (65)
  • 37
    • 4243179758 scopus 로고    scopus 로고
    • note
    • The maximum monomer number density is inferred from the detection limit for absorption measurements in our monolayer spectrometer, which is ca. 0.005 monolayer of the strongly absorbing chromophore I. Residual monomer species show up strongly, however, in fluorescence excitation spectra.
  • 40
    • 0000245279 scopus 로고
    • Mean molecular orientations were determined from an optical waveguide linear dichroism measurement of the transition dipole moment relative to the surface normal, as described in the following. (a) Cropek, D. M.; Bohn, P. W. J. Phys. Chem. 1990, 94, 6452. For the hemicyanines of interest in this work the transition dipole moment is aligned within 10° of the pseudorotation axis of the molecule as determined in the following.
    • (1990) J. Phys. Chem. , vol.94 , pp. 6452
    • Cropek, D.M.1    Bohn, P.W.2
  • 43
    • 85088544730 scopus 로고    scopus 로고
    • note
    • -1. Furthermore, in ref 8 the fraction of cis isomer measured in the photostationary state ranged from 0.02 (methanol) to 0.04 (ethylene glycol) in alkanol solvents.
  • 50
    • 85088542838 scopus 로고    scopus 로고
    • note
    • 2 is ∼0.18 and for cyanines it is ∼0.09. Exact values are not strictly available, since the rate constants are temperature and environment dependent, and they are not available in the literature for the conditions of our experiment.
  • 59
    • 4243141126 scopus 로고    scopus 로고
    • The detection limit of our monolayer absorption measurements at 480 nm is ca. 0.005 monolayer, and no absorption ascribable to the monomer is detected, so the monomer concentration may in fact be much lower; i.e., 0.5% represents an upper limit for the monomer concentration
    • The detection limit of our monolayer absorption measurements at 480 nm is ca. 0.005 monolayer, and no absorption ascribable to the monomer is detected, so the monomer concentration may in fact be much lower; i.e., 0.5% represents an upper limit for the monomer concentration.
  • 60
    • 0004012728 scopus 로고
    • Weissberger, A., Rossiter, B. W., Eds.; John Wiley & Sons, Inc.: New York
    • (a) Kuhn, H.; Möbius, D.; Bücher, H. Physical Methods of Chemistry; Weissberger, A., Rossiter, B. W., Eds.; John Wiley & Sons, Inc.: New York, 1972.
    • (1972) Physical Methods of Chemistry
    • Kuhn, H.1    Möbius, D.2    Bücher, H.3
  • 62
    • 4243070169 scopus 로고    scopus 로고
    • note
    • The boundary sites were identified as those sites not fully coordinated. The initial exciton position was chosen randomly. If the site selected was not one of the boundary sites, the exciton was allowed to take discrete steps (hops) until it reached a boundary site, at which point the run was terminated and the number of hops summed. When the number of runs (excitons generated) became very large, the calculated 〈n〉 became constant. The 〈n〉 calculated represents the mean number of hops needed for an exciton to reach the boundary of an aggregate island. Since the population of monomer is rather small (≤0.5% of the total population), not all the boundary sites are in the vicinity of a monomer. To take this fact into account, the product of the ratio of boundary sites per monomer and 〈n〉 was used to obtain the mean number of hops before excitation transfer.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.