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Bulk Self-Assembled Films for Photonics

Published online by Cambridge University Press:  10 February 2011

S. K. Tripathy
Affiliation:
University of Massachusetts Lowell, Center for Advanced Materials, Department of Chemistry
D. Y. Kim
Affiliation:
University of Massachusetts Lowell, Center for Advanced Materials, Department of Chemistry
W. H. Kim
Affiliation:
University of Massachusetts Lowell, Center for Advanced Materials, Department of Chemistry
J. Kumar
Affiliation:
Physics One University Avenue, Lowell, MA 01854
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Abstract

Recently we have reported, significant second harmonic generation from spin coated and bulk films of a soluble polydiacetylene (PDA), namely poly{8-[[[butoxy carbonyl] methyl]urethanyl]-1-(5-pyrimidyl)-octa-l,3,-diyne}} (BPOD) without recourse to poling. Poly(BPOD) is an asymmetrically substituted PDA in which a polarizable heteroaromatic pyrimidyl group is attached as one of the side groups. In addition to reviewing the earlier results, we report a series of new soluble PDAs of the same class with further functionalization, elaborating on the already defined design principle.

A second class of polymers with azo dye based NLO chromophores incorporated into the structure has been processed optically to fabricate holographic elements. Trans-cis-trans isomerization driven reorientation and macromolecular motion leads to the formation of surface relief gratings upon exposure to an interference pattern. Fabrication of optical elements based on these polymers will be elaborated.

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