Publication Type |
Journal Article |
School or College |
College of Science |
Department |
Physics |
Creator |
Vardeny, Zeev Valentine; Ehrenfreund, Eitan A. |
Other Author |
Ozaki, M.; Benner, R. E.; Barton, T. J.; Yoshino, K. |
Title |
Dispersion of resonant Raman scattering in ∏-conjugated polymers: role of the even parity excitons |
Date |
1997-09 |
Description |
Resonant Raman scattering dispersion of the most strongly coupled phonon frequencies with the excitation laser photon energy is measured in terms of a dispersion rate parameter D and quantified in a variety of p conjugated polymer films. D was found to be large in nonluminescent polymers and small in luminescent polymers. We show that D is determined by the dependence of the even parity excitons (Ag) on the polymer conjugation length, and this may serve as a useful spectroscopy for the 2Ag exciton in nonluminescent polymers where it is otherwise optically inactive. |
Type |
Text |
Publisher |
American Physical Society |
Journal Title |
Physical Review Letters |
Volume |
79 |
Issue |
9 |
First Page |
1762 |
Last Page |
1765 |
DOI |
10.1103/PhysRevLett.79.1762 |
citatation_issn |
0031-9007 |
Subject |
Resonant raman scattering; Even parity excitons |
Subject LCSH |
Conjugated polymers; Raman effect; Exciton theory; Phonons |
Language |
eng |
Bibliographic Citation |
Ozaki, M., Ehrenfreund, E., Benner, R. E., Barton, T. J., Yoshino, K., & Vardeny, Z. V. (1997). Dispersion of resonant Raman scattering in ∏-conjugated polymers: role of the even parity excitons. Physical Review Letters, 79(9), 1762-5. |
Rights Management |
(c) American Physical Society http://dx.doi.org/10.1103/PhysRevLett.79.1762 |
Format Medium |
application/pdf |
Format Extent |
149,534 bytes |
Identifier |
ir-main,9881 |
ARK |
ark:/87278/s6qf9b3d |
Setname |
ir_uspace |
ID |
703614 |
Reference URL |
https://collections.lib.utah.edu/ark:/87278/s6qf9b3d |