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Volumn 100, Issue 29, 1996, Pages 11984-11993

Dynamic photophysical properties of conformationally distorted nickel porphyrins. 1. Nickel(II) dodecaphenylporphyrin

Author keywords

[No Author keywords available]

Indexed keywords

ELECTRON ENERGY LEVELS; MOLECULAR DYNAMICS; PHOTOCHEMICAL REACTIONS; PHYSICAL CHEMISTRY; PROTEINS; SPECTROSCOPIC ANALYSIS;

EID: 0030198139     PISSN: 00223654     EISSN: None     Source Type: Journal    
DOI: 10.1021/jp960735j     Document Type: Article
Times cited : (101)

References (74)
  • 1
    • 0002248132 scopus 로고
    • Tetrapyrroles adopt a number of conformations, the most common types being the planar, saddled, and ruffled structures: Scheidt, W. R.; Lee, Y. J. Struct. Bonding (Berlin) 1987, 64, 1. When in the planar conformation the opposite N-Ni-N angle is ∼180° and the C-N-N-C dihedral is ∼0°. The saddle conformation is characterized by a tilting of alternate pyrrole ring planes above and below the mean plane of the core while the meso carbons remain nearly in the plane (N-Ni-N < 180 and C-N-N-C remains ∼0°) The ruffled conformation is characterized by a twisting of alternate pyrrole ring planes such that the β-pyrrole carbons and meso carbons lie above and below the mean plane of the core (N-Ni-N remains ∼180° and C-N-N-C > 0°).
    • (1987) Struct. Bonding (Berlin) , vol.64 , pp. 1
    • Scheidt, W.R.1    Lee, Y.J.2
  • 19
    • 85033047466 scopus 로고    scopus 로고
    • note
    • Abbreviations used: TPP, 5,10,15,20-tetraphenylporphyrin; OEP, 2,3,7,8,12,13,17,18-octaethylporphyrin; DPP, 2,3,5,7,8,10,12,13,15,17,18,20-dodecaphenylporphyrin; PPDME, 2,18-dimethylpropionate-3,18-divinyl-3,7,12,17-tetramethylporphyrin; T(tert-butyl)P, 5,10,15,20-tetra-tert-butylporphyrin; OETPP, 5,10,15,20-tetraphenyl-2,3,7,8,12,13,17,18-octaethylporphyrin.
  • 46
    • 0002312013 scopus 로고
    • Dolphin, D., Ed.; Academic Press: New York
    • (b) Gouterman, M. In The Porphyrins; Dolphin, D., Ed.; Academic Press: New York, 1978; Vol. 3, pp 1-165.
    • (1978) The Porphyrins , vol.3 , pp. 1-165
    • Gouterman, M.1
  • 69
    • 85033041319 scopus 로고    scopus 로고
    • note
    • 1(π,π*) spectrum of NiDPP occurs about 5 nm to shorter wavelengths than the position of the ground-state Soret band (Figures 3 and 4A), and (iii) the amplitude of the bleaching is about 40% of that expected based on the amplitudes of the bleachings in the Q bands.
  • 71
    • 85033043441 scopus 로고    scopus 로고
    • note
    • 1(π,π*) decay.
  • 72
    • 85033072539 scopus 로고    scopus 로고
    • note
    • Since similar spectra of the ligand-field excited state have been observed for NiTPP, NiOEP, NiPPDME, and all the other nickel porphyrins investigated previously, specific effects involving the peripheral groups appear to be relatively unimportant. Since similar results have been found for all of these molecules using several different excitation wavelengths, it is unlikely that the red-shifts derive from excitation of some fraction of slightly distorted molecules that may be present in solution.
  • 74
    • 85033041600 scopus 로고    scopus 로고
    • note
    • x2-y2) should not have substantially different inherent decay times, and other short-lived excited states such as metal ↔ ring charge-transfer states should be at considerably higher energy.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.