Facile synthesis of highly efficient phenyltetraene-based nonlinear optical chromophores for electrooptics |
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Authors: | Luo Jingdong Cheng Yen-Ju Kim Tae-Dong Hau Steven Jang Sei-Hum Shi Zhengwei Zhou Xing-Hua Jen Alex K-Y |
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Institution: | Department of Materials Science & Engineering and Department of Chemistry, University of Washington, Seattle, Washington 98195, USA. |
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Abstract: | reaction: see text] A facile synthetic route has been developed to convert an electron-rich, sterically hindered dialkylaminodienone into a conjugated dialkylaminotrienal with good yield. The derived dialkylaminotetraene-type nonlinear optical chromophores possess an all-trans conformation and can be functionalized with fluoro-dendron to provide proper shape modification for poling. Polymers doped with two examples of these chromophores in high concentrations have been poled to afford ultra-large electrooptic coefficients (r(33)) of 208 and 262 pm/V, respectively, at the measuring wavelength of 1.31 mum. |
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