Two-photon spectroscopy of symmetric donor/acceptor substituted conjugated molecules

Mariacristina Rumi, Joseph W. Perry, Sankaran Thayumanavan, Seth R. Marder, Ahmed A. Heikal, Jeffrey E. Ehrlich, Stephen Barlow, Michael D. Levin, Dianne McCord-Maughon, Harald Rockel

Research output: Contribution to conferencePaperpeer-review

Abstract

The photon absorption spectra for donor-π-donor (D-π-D), donor-π-acceptor-π-donor (D-A-D) and acceptor-π-donor-π-acceptor (A-D-A) molecules, which have been measured using two-photon induced fluorescence method, is discussed. The lowest-energy two-photon absorption for these system can be well described by a Sum-Over-States expression in which only three electronic levels play a significant role: the ground state, the lowest-dipole allowed state, and the two-photon state. An additional increase in transition dipole moment Mee is observed in the D-A-D and A-D-A systems.

Original languageEnglish (US)
Pages265-266
Number of pages2
StatePublished - Jan 1 1999
EventProceedings of the 1999 Quantum Electronics and Laser Science Conference (QELS '99) - Baltimore, MD, USA
Duration: May 23 1999May 28 1999

Other

OtherProceedings of the 1999 Quantum Electronics and Laser Science Conference (QELS '99)
CityBaltimore, MD, USA
Period5/23/995/28/99

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