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Volumn 105, Issue 27, 2001, Pages 6396-6411

Conformational and electronic effects of phenyl-ring fluorination on the photophysical properties of nonplanar dodecaarylporphyrins

Author keywords

[No Author keywords available]

Indexed keywords

PHOTOPHYSICAL PROPERTIES;

EID: 0035849812     PISSN: 10895647     EISSN: None     Source Type: Journal    
DOI: 10.1021/jp004556k     Document Type: Article
Times cited : (57)

References (56)
  • 26
    • 0011387410 scopus 로고    scopus 로고
    • note
    • The Class I compounds are more soluble in the nonpolar solvents than the Class II compounds, while the Class II compounds are more soluble than Class I in polar solvents.
  • 28
    • 0002312013 scopus 로고
    • Dolphin, D., Ed.; Academic: New York
    • Gouterman, M. In The Porphyrins; Dolphin, D., Ed.; Academic: New York, 1978; Vol. III, pp 1-153.
    • (1978) The Porphyrins , vol.3 , pp. 1-153
    • Gouterman, M.1
  • 33
    • 0011388351 scopus 로고    scopus 로고
    • note
    • X(0,0) bleaching and stimulated emission.
  • 34
    • 0011488920 scopus 로고    scopus 로고
    • note
    • Over the probe wavelengths (700-800 nm), the time constant varied from 2 to 8 ps, with an average value of 5 ps.
  • 40
    • 0011433522 scopus 로고    scopus 로고
    • note
    • 2u orbital-energy spacing but not the ordering. The ordering of the two orbitals is normally derived from EPR experiments on the oxidized compounds. For simplicity, it is assumed that this ordering is preserved in the neutral complexes, although this is not necessarily the case.
  • 44
    • 0011387220 scopus 로고    scopus 로고
    • note
    • 2u lying above the alu orbital (see ref 2c).
  • 45
    • 0011434469 scopus 로고    scopus 로고
    • note
    • f and τ were substituted into eq 1. However, minute impurities can influence the fluorescence yields, given the very weak emission characteristic of the nonplanar porphyrins.
  • 46
    • 0011387870 scopus 로고    scopus 로고
    • note
    • X(0,0) intensity in the calculation.
  • 47
    • 0011389169 scopus 로고    scopus 로고
    • note
    • -1 (see ref 10).
  • 48
    • 0011431435 scopus 로고    scopus 로고
    • note
    • 2TPP standard as in part c.
  • 49
    • 0011482013 scopus 로고    scopus 로고
    • note
    • 2TPP standard as in part c; a source of error here is associated with the extinction coefficients, which can span a range of values for a given compound.
  • 53
    • 0011388047 scopus 로고    scopus 로고
    • note
    • (b) For the highly fluorinated nonplanar porphyrins, one effect of these enhanced interactions with polar solvents may be stabilization of charge-transfer excited-state configurations involving the macrocycle and fluorinated aryl rings. Mixing of the charge-transfer and (π,π*) configurations may provide a contribution to the enhanced nonradiative decay, in addition to the dominant effects associated with nonplanarity (conformational changes, multiple accessible configurations, enhanced Franck-Condon factors) discussed in the text.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.