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Proceedings Paper

New paradigm for ultrahigh electro-optic activity: through supramolecular self-assembly and novel lattice hardening
Author(s): Tae-Dong Kim; Zhengwei Shi; Jingdong Luo; Sei-Hum Jang; Yen-Ju Cheng; Xinghua Zhou; Su Huang; Larry R Dalton; Warren Herman; Alex K.-Y. Jen
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Paper Abstract

A major breakthrough in the area of organic electro-optic (EO) materials has been recently achieved. To go beyond the oriented gas model limit for organic EO materials, new approaches of using nanoscale architecture control and supramolecular self-assembly have been proved as a very effective method to create a new paradigm for materials with very exciting properties. High-performance EO polymers were demonstrated by a facile and reliable Diels-Alder "click" reaction for postfunctionalization and lattice hardening to improve EO activity and thermal stability. This type of "click" chemistry paves the way to systematically study the relationship among EO activity, chromophore shape, and number density of the chromophores. Reversible supramolecular interactions were also introduced to a new generation of EO dendrimers and polymers to create self-assembled nano-objects, overcome strong intermolecular electrostatic interaction, and improve their poling efficiency and stability. These self-organized EO materials were used as hosts in a binary chromophore system to further improve chromophore number density and r33 value. With these novel approaches, we succeeded in enlarging the full potential of organic NLO materials by a factor of 3~5 and developing a variety of nano-structured organic EO materials with ultrahigh r33 values (>300 pm/V at the wavelengths of 1310 and 1550 nm, more than 10 times that of LiNbO3) and excellent auxiliary property, such as thermal stability and optical transparency. The success of these material developments has inspired the exploration of new device concepts to take full advantage of organic EO materials with ultrahigh r33 values.

Paper Details

Date Published: 16 February 2007
PDF: 14 pages
Proc. SPIE 6470, Organic Photonic Materials and Devices IX, 64700D (16 February 2007); doi: 10.1117/12.716082
Show Author Affiliations
Tae-Dong Kim, Univ. of Washington (United States)
Zhengwei Shi, Univ. of Washington (United States)
Jingdong Luo, Univ. of Washington (United States)
Sei-Hum Jang, Univ. of Washington (United States)
Yen-Ju Cheng, Univ. of Washington (United States)
Xinghua Zhou, Univ. of Washington (United States)
Su Huang, Univ. of Washington (United States)
Larry R Dalton, Univ. of Washington (United States)
Warren Herman, Lab. for Physical Sciences (United States)
Alex K.-Y. Jen, Univ. of Washington (United States)

Published in SPIE Proceedings Vol. 6470:
Organic Photonic Materials and Devices IX
James G. Grote; Francois Kajzar; Nakjoong Kim, Editor(s)

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