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A Unified Description of Linear and Nonlinear Polarization in Organic Polymethine Dyes
Abstract
An internal or external electric field F can drive the chemical structure, bond order alternation, and electronic structure of linear polymethine dyes from a neutral, bond-alternated, polyene-like structure, through a cyanine-like structure, and ultimately to a zwitterionic (charge-separated) bond-alternated structure. As the structure evolves under the influence of F, the linear polarizability α, the first hyperpolarizability β, and the second hyperpolarizability γ are seen to be derivatives, with respect to F, of their next lower order polarization (for α) or polarizability (for β and γ). These derivative relations provide a unified picture of the dependence of the polarizability and hyperpolarizabilities on the structure in linear polymethine dyes. In addition, they allow for predictions of structure-property relations of higher order hyperpolarizabilities.
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Metadata
- Authors
- Marder, S. R., Gorman, C. B., Meyers, F., Perry, J. W., Bourhill, G., Brédas, J.-L., & Pierce, B. M.
- Venue
- Science
- Published
- 1994-07-29
- Volume
- 265
- Issue
- 5172
- Pages
- 632-635
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2052568700
- Cited by
- 661
- References
- 0
- FWCI
- 27.90
- Type
- journal article
- Language
- en
- Open access
- closed
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- Marder, S. R., Gorman, C. B., Meyers, F., Perry, J. W., Bourhill, G., Brédas, J.-L., & Pierce, B. M. (1994). A Unified Description of Linear and Nonlinear Polarization in Organic Polymethine Dyes. Science. https://doi.org/10.1126/science.265.5172.632
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