Facile synthesis of highly efficient phenyltetraene-based nonlinear optical chromophores for electrooptics.
[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.
Department of Materials Science & Engineering and Department of Chemistry, University of Washington, Seattle, Washington 98195, USA.
Jingdong
J
Luo
Yen-Ju
YJ
Cheng
Tae-Dong
TD
Kim
Steven
S
Hau
Sei-Hum
SH
Jang
Zhengwei
Z
Shi
Xing-Hua
XH
Zhou
Alex K-Y
AK
Jen