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Photonic Properties of Dendrons and Dendrimers Incorporating Bis-(Diphenylphosphino)Diphenylpolyenes

Published online by Cambridge University Press:  21 March 2011

L. Madrigal ,
K. Kuhl  and
C. Spangler
L. Madrigal
Affiliation:
Department of Chemistry and Biochemistry, Optical Technology Center, Montana State University, Bozeman, MT 59717, [email protected]
K. Kuhl
Affiliation:
Department of Chemistry and Biochemistry, Optical Technology Center, Montana State University, Bozeman, MT 59717
C. Spangler
Affiliation:
Department of Chemistry and Biochemistry, Optical Technology Center, Montana State University, Bozeman, MT 59717
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Abstract

Substituent effects are quite important in fine tuning the photonic properties of conjugated molecules. In designing new chromophores, electron-donating or withdrawing substituents affect the electron distribution in the conjugation sequence, and previous studies to establish structure- property relationships have noted that when second row elements replace first row elements in the structure (e.g. S for O in donor groups), large enhancements of both the second and third order optical nonlinearity are observed. However, along with the observed enhancement of the nonlinearity, a red-shift in the absorption spectra occurs, often with peak broadening and tailing. This absorptivity-nonlinearity trade-off has been a constant concern in proposing organic materials for electro-optic device applications. In this presentation we will review our recent activity in designing new chromophores wherein P replaces N in donor groups and dendrimer building blocks, and the consequences and opportunities resulting from the observed large blue shifts in the spectra.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 598: Symposium BB – Electrical, Optical, & Magenetic Properties...V , 1999 , BB8.9
Copyright
Copyright © Materials Research Society 1999

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References

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