Synthesis and excited-state photodynamics in perylene-porphyrin dyads 2. Effects of porphyrin metalation state on the energy-transfer, charge-transfer, and deactivation channels

Journal of Physical Chemistry B

Volumn 105, Issue 34, 2001, Pages 8249-8258

  Yang, Sung Ik ^a   Prathapan, Sreedharan ^b,c   Miller, Mark A ^b   Seth, Jyoti ^d   Bocian, David F ^d   Lindsey, Jonathan S ^b   Holten, Dewey ^a  

^a WASHINGTON UNIVERSITY   (United States)

^b NORTH CAROLINA STATE UNIVERSITY   (United States)

^c Department of Physics   (India)

^d UNIVERSITY OF CALIFORNIA   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

PHOTODYNAMICS;

AROMATIC HYDROCARBONS; CHARGE TRANSFER; CHROMOPHORES; FLUORESCENCE; FREE ENERGY; GROUND STATE; OPTOELECTRONIC DEVICES; QUENCHING;

MOLECULAR DYNAMICS;

EID: 0035975457     PISSN: 10895647     EISSN: None     Source Type: Journal    
DOI: 10.1021/jp010336a     Document Type: Article

References (30)

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10. 1 The difference does not represent substantial deactivation of PDI* to the ground-state competing with PDI*-pep-Fb → PDI-pep-Fb* energy transfer; the high efficiency of the latter process is also born out by the static fluorescence measurements.
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15. 1 This result reflects the relatively weak electronic interactions in the dyads. (a) Hsiao, J.S.; Krueger, B.P.; Wagner, R.W.; Johnson, T.E.; Delaney, J.K.; Mauzerall, D.C.; Fleming, G.R.; Lindsey, J.S.; Bocian, D.F.; Donohoe, R.J. J. Am. Chem. Soc. 1996, 118, 11181-11193. (b) Li, F.; Gentemann, S.; Kalsbeck, W.A.; Seth, J.; Lindsey, J.S.; Holten, D.; Bocian, D.F. J. Mater. Chem. 1997, 7, 1245-1262.
16. 1 This result reflects the relatively weak electronic interactions in the dyads. (a) Hsiao, J.S.; Krueger, B.P.; Wagner, R.W.; Johnson, T.E.; Delaney, J.K.; Mauzerall, D.C.; Fleming, G.R.; Lindsey, J.S.; Bocian, D.F.; Donohoe, R.J. J. Am. Chem. Soc. 1996, 118, 11181-11193. (b) Li, F.; Gentemann, S.; Kalsbeck, W.A.; Seth, J.; Lindsey, J.S.; Holten, D.; Bocian, D.F. J. Mater. Chem. 1997, 7, 1245-1262.
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20. s the static dielectric constant (2.38 for toluene and 37.4 for acetonitrile).
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29. s ∼ 0.05 eV for toluene and ∼0.7 eV for acetonitrile. Thus, the total reorganization energy is estimated to be λ ∼ 0.4 eV for the charge-transfer and charge-recombination reactions in toluene and λ ∼ 1.1 eV in acetonitrile.
30. + → PDI-pep-Fb* charge recombination in toluene (half-filled circle and square in Figure 8A); the trend is followed by that pair in acetonitrile (Figure 8B).