Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Relationship between electron–phonon coupling and intermolecular interaction parameters in dye-doped organic glasses

Not Accessible

Your library or personal account may give you access

Abstract

Both the matrix-induced shift of the electronic transition frequency and the coupling strength of this transition to the low-energy vibronic modes are associated with the change in intermolecular interaction potentials on excitation. A review of the Debye–Waller factors and spectral hole widths for organic dyes imbedded in amorphous hosts is presented together with the solvent-shift data. Relative intensities of zero-phonon lines in centrosymmetric impurities depend on the solvent shifts or on the changes in molecular polarizabilities on excitation. In accordance with the small difference in intermolecular dispersion interaction energy in the ground and the excited states, free-base porphyrins show deep and narrow spectral holes at liquid-helium temperatures, which are persistent up to 100 K. In the case of polar molecules both the linear and the quadratic electron–phonon coupling are mediated mainly by the dipole–dipole interaction, since the Debye–Waller factors and hole widths are strongly correlated with the changes in molecular dipole moments (Δμ) between S1 and the ground state. To our knowledge, in glassy hosts no zero-phonon transitions have been reported for dopant molecules with Δμ values exceeding 2–3 D.

© 1992 Optical Society of America

Full Article  |  PDF Article
More Like This
Temperature-dependent spectral hole-burning study of dye–surface and mixed matrix–dye–surface systems

B. Sauter, Th. Basché, and C. Bräuchle
J. Opt. Soc. Am. B 9(5) 804-810 (1992)

Spectral holes under pressure: proteins and glasses

J. Zollfrank and J. Friedrich
J. Opt. Soc. Am. B 9(6) 956-961 (1992)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (2)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (3)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved