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Proceedings Paper

Linear and nonlinear optical properties of linear and hyperbranched conjugated polymers
Author(s): Anjun Qin; Zhen Li; Jacky Wing Yip Lam; Ben Zhong Tang
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Paper Abstract

Azo-functionalized hyperbranched polymers 1 and 2, and linear polyacetylene 3 are synthesized by palladium-catalyzed coupling of triiodoarenes with a diethynylazobenzene, and post functionalization, respectively. These polymers are soluble, film-forming, and morphologically stable (Tg > 180 oC). The poled polymer films of 1 and 2 exhibit high second-harmonic generation coefficients (d33 up to 177 pm/V), thanks to the chromophore-separation and site-isolation effects of hyperbranched architectural structure of the polymers in the three-dimensional space. The poled film of polymer 3 shows the trade-off of nonlinearity-transparency-orientation thermal stability. The poled films are all orientationally and thermally stable due to the facile cross-linking of the multiple acetylenic triple bonds in the hyperbranched polymer and the rigid backbone in the linear polyacetylene, respectively.

Paper Details

Date Published: 14 September 2006
PDF: 12 pages
Proc. SPIE 6331, Linear and Nonlinear Optics of Organic Materials VI, 633105 (14 September 2006); doi: 10.1117/12.679423
Show Author Affiliations
Anjun Qin, The Hong Kong Univ. of Science & Technology (Hong Kong China)
Zhen Li, The Hong Kong Univ. of Science & Technology (Hong Kong China)
Jacky Wing Yip Lam, The Hong Kong Univ. of Science & Technology (Hong Kong China)
Ben Zhong Tang, The Hong Kong Univ. of Science & Technology (Hong Kong China)
Zhejiang Univ. (China)


Published in SPIE Proceedings Vol. 6331:
Linear and Nonlinear Optics of Organic Materials VI
Robert A. Norwood, Editor(s)

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