Excited States in Solid Phenothiazine as Studied by Electroabsorption Spectroscopy

• Authors: J. Kalinowski , W. Stampor , V. Fattori , P. Di Marco
• Languages of publication: EN

Abstracts

EN

Electric field modulated absorption spectra of vapor deposited layers of phenothiazine, explained in terms of a quadratic Stark effect, indicate modification of intramolecular (Frenkel-type) excitons by charge transfer transi­tions throughout UVIS absorption spectrum in the range 250-450 nm. The charge transfer character of the excited states appears at energies characteristic of various oxidation products of phenothiazine as identified from a spectroscopic study of photochemical air oxidation, performed on solution and solid film samples of this compound. The charge transfer transitions are ascribed to electron transfer between the molecules of phenothiazine and their oxidized species created in the samples during preparation and handling procedures.

Keywords

EN

31.50.+w; 31.70.Dk; 31.70.Ks; 33.55.Be

Discipline

• 31.70.Ks: Molecular solids
• 31.70.Dk: Environmental and solvent effects

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1995
• Volume: 87
• Issue: 6
• Pages: 953-964

Dates

published

1995-06

received

1995-03-16

Contributors

author

J. Kalinowski

• Institute of Photochemistry and Radiation, C.N.R., Via P. Gobetti 101, 40129 Bologna, Italy
• Department of Molecular Physics, Technical University of Gdańsk, G. Narutowicza 11/12, 80-952 Gdańsk, Poland

author

W. Stampor

• Department of Molecular Physics, Technical University of Gdańsk, G. Narutowicza 11/12, 80-952 Gdańsk, Poland

author

V. Fattori

• Institute of Photochemistry and Radiation, C.N.R., Via P. Gobetti 101, 40129 Bologna, Italy

author

P. Di Marco

• Institute of Photochemistry and Radiation, C.N.R., Via P. Gobetti 101, 40129 Bologna, Italy

Identifiers

DOI

10.12693/APhysPolA.87.953