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Second-Order Nonlinear Optical Properties Of Thiophene Containing Chromophores With Extended Conjugation

Published online by Cambridge University Press:  16 February 2011

Sandra Gilmour ,
Alex K-Y. Jen ,
Seth R. Marder ,
A. Jennifer-Neissink ,
Joseph W. Perry ,
Jørgen Skindhøj  and
Young Ming Cai
Sandra Gilmour
Affiliation:
Jet Propulsion Laboratory, MS 67–201, California Institute of Technology, Pasadena, CA91109.
Alex K-Y. Jen
Affiliation:
EniChem AMerica Inc., Research and Development Center, 2000 Cornwall Road, Monmouth Junction, NJ 08852.
Seth R. Marder
Affiliation:
Jet Propulsion Laboratory, MS 67–201, California Institute of Technology, Pasadena, CA91109. Molecular Materials Resource Center, The Beekman Institute, California Institute of Technology, Pasadena, CA 91125.
A. Jennifer-Neissink
Affiliation:
Molecular Materials Resource Center, The Beekman Institute, California Institute of Technology, Pasadena, CA 91125.
Joseph W. Perry
Affiliation:
Molecular Materials Resource Center, The Beekman Institute, California Institute of Technology, Pasadena, CA 91125.
Jørgen Skindhøj
Affiliation:
Jet Propulsion Laboratory, MS 67–201, California Institute of Technology, Pasadena, CA91109.
Young Ming Cai
Affiliation:
EniChem AMerica Inc., Research and Development Center, 2000 Cornwall Road, Monmouth Junction, NJ 08852.
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Abstract

The synthesis and first hyperpolarizabilities (β) of various donor-acceptor substituted thiophene containing compounds with extended conjugation are reported. Results indicate that replacing phenyl rings with less aromatic thiophene moieties enhances the second-order hyperpolarizability. Incorporating the acceptor group, N,N' diethylthiobarbituric acid, that can gain aromaticity upon charge-separation has also led to an increase in the nonlinearity. Some of the molecules have been incorporated into poIy (Methyl Methacrylate) and the electro-optic coefficients of these host-guest polymers were Measured.

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References

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