Polarization Energies of Molecular Cations in Alkane Solutions

Katoh, Ryuzi; Lacmann, K.; Schmidt, Werner F.

doi:10.1524/zpch.1995.190.part_2.193

Cited by 13 publications

(11 citation statements)

References 15 publications

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“…I g 's and E A 's of the compounds studied are available from literature, and the polarization energy P can be estimated by Born's formula, where e is the elementary charge, ε is the dielectric constant of the medium, ε 0 is the permittivity of the vacuum, and R is the effective radius of the ion. It has been known that Born's formula gives reasonable values when the van der Waals radius R vdW is used as the effective radius R of the ion …”

Section: Discussionmentioning

confidence: 99%

Near-IR Absorption Spectrum of Aromatic Excimers

Katoh

Nakashima

et al. 1997

J. Phys. Chem. A

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The absorption spectrum of excimers in fluid media has been measured with 1-methylnaphthalene, anthracene, pyrene, and perylene. In all compounds studied an absorption band characteristic of an excimer has been observed in the near-IR. It is shown that the IR band can be understood by assuming that an excimer is essentially a charge-transfer complex: The near-IR band is to be assigned to a transition from the lowest excimer state to a higher state which has an ion-pair character.

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Section: Discussionmentioning

confidence: 99%

Near-IR Absorption Spectrum of Aromatic Excimers

Katoh

Nakashima

et al. 1997

J. Phys. Chem. A

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“…10, this change can be expressed as a lowering of the energy of the conduction band. The polarization energy (P) can be estimated by means of Born's formula: 34…”

Section: Mechanism Of Electron Injectionmentioning

confidence: 99%

Photoinduced electron injection in black dye sensitized nanocrystalline TiO2 films

et al. 2007

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“…The polarization energy P + can be evaluated using the Born equation: where e is the elementary charge, ε 0 is the vacuum permittivity, r + is the radius of the cationic species, and ε S is the relative dielectric constant of the medium. The radius r + was roughly estimated to be 3.88 Å from the van der Waals volume of TMB. The dielectric constant ε S of PnBMA has been reported to be 2.8 at 200 K (30 Hz) where the TL glow consisted of only phosphorescence and fluorescence was almost diminished.…”

Section: Resultsmentioning

confidence: 99%

Charge Recombination Luminescenceviathe Photoionization of a Dopant Chromophore in Polymer Solids

et al. 1997

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The behavior of a photoejected electron with the parent cation formed through two-photon ionization of a dopant chromophore in poly(alkyl methacrylate)s and polystyrene was studied by measurement of the emission spectra of the charge recombination luminescence, i.e., isothermal luminescence (ITL) at 20 K and thermoluminescence (TL) at temperatures from 20 to 300 K. The ITL spectral shape remained the same between 10 min and 10 h after the photoirradiation. On the other hand, the intensity ratio of phosphorescence (I P) to fluorescence (I F), I P/I F in the TL spectra increased for poly(alkyl methacrylate)s above a temperature where small scale motions of the main chain are released but was almost constant for polystyrene in the temperature range examined. These findings show that, for poly(alkyl methacrylate)s, the photoejected electrons change into more stable anion species with a motional relaxation of the polymer. From the TL spectral change, the depth of the deeper trap at higher temperatures was estimated to be more than 1.8 eV.

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Polarization Energies of Molecular Cations in Alkane Solutions

Cited by 13 publications

References 15 publications

Near-IR Absorption Spectrum of Aromatic Excimers

Near-IR Absorption Spectrum of Aromatic Excimers

Photoinduced electron injection in black dye sensitized nanocrystalline TiO2 films

Charge Recombination Luminescenceviathe Photoionization of a Dopant Chromophore in Polymer Solids

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