Electronic Coherence and Collective Optical Excitations of Conjugated Molecules
10.1126/science.277.5327.781
Crossref journal-article
American Association for the Advancement of Science (AAAS)
Science (221)
Abstract

Optical spectroscopy of conjugated molecules is described by using collective electronic coordinates, which represent the joint dynamics of electron-hole pairs. The approach relates the optical signals directly to the dynamics of charges and bond orders (electronic coherences) induced by the radiation field and uses only ground-state information, thus avoiding the explicit calculation of excited molecular states. The resulting real-space picture is reminiscent of the normal-mode analysis of molecular vibrations and offers a unified framework for the treatment of other types of systems including semiconductor nanostructures and biological complexes. Spatial coherence displayed in two-dimensional plots of the five electronic normal modes that dominate the optical response of poly( p -phenylene vinylene) oligomers with up to 50 repeat units (398 carbon atoms) in the 1.5- to 8-electronvolt frequency range suggests a saturation to bulk behavior at about five repeat units.

Bibliography

Mukamel, S., Tretiak, S., Wagersreiter, T., & Chernyak, V. (1997). Electronic Coherence and Collective Optical Excitations of Conjugated Molecules. Science, 277(5327), 781–787.

Authors 4
  1. Shaul Mukamel (first)
  2. Sergei Tretiak (additional)
  3. Thomas Wagersreiter (additional)
  4. Vladimir Chernyak (additional)
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Dates
Type When
Created 23 years ago (July 27, 2002, 5:44 a.m.)
Deposited 1 year, 7 months ago (Jan. 13, 2024, 12:53 a.m.)
Indexed 3 weeks, 4 days ago (Aug. 2, 2025, 1:10 a.m.)
Issued 28 years ago (Aug. 8, 1997)
Published 28 years ago (Aug. 8, 1997)
Published Print 28 years ago (Aug. 8, 1997)
Funders 0

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@article{Mukamel_1997, title={Electronic Coherence and Collective Optical Excitations of Conjugated Molecules}, volume={277}, ISSN={1095-9203}, url={http://dx.doi.org/10.1126/science.277.5327.781}, DOI={10.1126/science.277.5327.781}, number={5327}, journal={Science}, publisher={American Association for the Advancement of Science (AAAS)}, author={Mukamel, Shaul and Tretiak, Sergei and Wagersreiter, Thomas and Chernyak, Vladimir}, year={1997}, month=aug, pages={781–787} }