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Synthesis and Optical Characterization of New NLO-Active Polyurethanes and a Silver Colloidal Suspension in a Select Polyurethane

Published online by Cambridge University Press:  25 February 2011

P. Kitlplchal ,
R. LaPeruta Jr ,
G. M. Korenowskl  and
G. E. Wnek
P. Kitlplchal
Affiliation:
Department of Chemistry, Rensselaer Polytechnic Institute, Troy, New York 12180–3590, I. Gorodisher, 3M Science Research Laboratory, St. Paul, MN 55144–1000.
R. LaPeruta Jr
Affiliation:
Department of Chemistry, Rensselaer Polytechnic Institute, Troy, New York 12180–3590, I. Gorodisher, 3M Science Research Laboratory, St. Paul, MN 55144–1000.
G. M. Korenowskl
Affiliation:
Department of Chemistry, Rensselaer Polytechnic Institute, Troy, New York 12180–3590, I. Gorodisher, 3M Science Research Laboratory, St. Paul, MN 55144–1000.
G. E. Wnek
Affiliation:
Department of Chemistry, Rensselaer Polytechnic Institute, Troy, New York 12180–3590, I. Gorodisher, 3M Science Research Laboratory, St. Paul, MN 55144–1000.
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Abstract

NLO-active polyurethanes were developed and optically characterized. We synthesized polyurethanes possessing large hyperpolarlzabilities, which are covalently attached or crosslinked to the polymer backbone. At ambient temperature the d33 values for poled polyurethanes were measured shortly after poling and 6 months later. The second-order nonllnearlty of the poled, crosslinked polyurethane is extremely stable decreasing slightly over 6 months. Also, using a polyurethane bearing a tricyanovinyl moiety as the host, we developed a nonlinear optical silver nanoparticle composite system. A third-order susceptibility was measured for the composite and was determined to be larger than that from the sum of its components. A chemical enhancement mechanism is speculated to be contributing to the large optical nonlinearities.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 247: Symposium N – Electrical, Optical, and Magnetic Properties of Organic Solid State Materials , 1992 , 117
Copyright
Copyright © Materials Research Society 1992

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References

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