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Volumn 14, Issue 1, 2008, Pages 169-183

New and efficient arrays for photoinduced charge separation based on perylene bisimide and corroles

Author keywords

Charge separation; Corroles; Electron transfer; Photo chemistry; Porphyrinoids

Indexed keywords

NITROGEN COMPOUNDS; PHOTOCHEMICAL REACTIONS; SPECTROSCOPIC ANALYSIS; SYNTHESIS (CHEMICAL);

EID: 38149074878     PISSN: 09476539     EISSN: 15213765     Source Type: Journal    
DOI: 10.1002/chem.200700866     Document Type: Article
Times cited : (68)

References (132)
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    • The common correction used to determine the CS state energy level in an a polar solvent from the values of the redox potentials in a polar solvent takes into account the Coulombic interaction term and the ion solvation energy based on the Born dielectric continuum model according to Weller (ref, 31, The energy of the charge-separated states relative to the ground state, ΔGCS, can thus be calculated by the following equation; ΔGCS, Eox, Ered, 14.32/R DAεS, 14.32(1/2rD+1/2r A)(1/εS, 1/εP) For the formation of the charge-separated state involving the transfer of an electron from the corrole to the perylene bisimide, Eox and Ered are the first oxidation potential of the corrole and the first reduction potential of perylene bisimide. respectively, which are +0.72 V versus SCE for C2, 0.86 V versus SCE for C3
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    • The oxidation potential of PI0 in acetonitrile is of the order of + 1.6 V versus SCE and the reduction potential of corroles C2 and C3 are of the order of -0.75 V and -0.65 V versus SCE. respectively, in benzonitrile (M. Cembor, J. S. Jaworski, private communication), which would leave the CS energy level at about 1.7 eV after correction for the polarity of the solvent.
    • The oxidation potential of PI0 in acetonitrile is of the order of + 1.6 V versus SCE and the reduction potential of corroles C2 and C3 are of the order of -0.75 V and -0.65 V versus SCE. respectively, in benzonitrile (M. Cembor, J. S. Jaworski, private communication), which would leave the CS energy level at about 1.7 eV after correction for the polarity of the solvent.
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    • The Förster rates kenF were calculated by means of Equation (1)[35] kenF, 88.10 kφ/n4τRDA6 JF in which Φ and τ are the emission quantum yield (0.92) and the life-time (4 ns) of the donor PI, RDA is the donor-acceptor center-to-center distance (13.5 Å for C2-PI and C3-PI, and 17.7 Å for C3-PPI, n is the refractive index of toluene and JF is the overlap integral, K2, the orientation factor, can be simplified to the statistical value, 2/3, JF, the Förster overlap integral, is calculated from the overlap between the luminescence spectrum of the donor PI0, F(ṽ, cm -1 units, and the absorption spectrum ε(ṽ) of the acceptors C2 and C3 (cm -1 units, according to the Equation 2, ref, 35, JF, ∫F /∫
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