Mi-Yun Jeong, Sophie Brasselet, Tong-Kun Lim and Bong Rae Cho Octupolar Films with Large Second Harmonic Generation and Electro-Optical Effects Advanced Functional Materials 22
Octupolar films composed of 1,3,5- tricyano-2,4,6-tris(p-diethylaminostyryl)benzene (TTB) octupolar molecules display both polycrystalline and cylindrical domains. The molecular orientation, second harmonic generation (SHG) efficiencies, and electro-optic (EO) coefficients of the crystalline domains are studied theoretically and experimentally. Both structures exhibit high and stable SHG and EO efficiencies. These characteristics will be useful in second order nonlinear optical applications.
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