Organic chromophore with enhanced optical nonlinearity and thermal stability by introducing julolidine as donor group.
We prepared a nonlinear optical chromophore (Ju-TCF) with julolidine moiety as a donor and compared it with the chromophore (St-TCF) with the dialkyl-attached aminobenzene as a donor. The MOPAC calculations showed that the figure of merit (microbeta0) of Ju-TCF was estimated 70% larger than St-TCF. Based on the TGA result, Ju-TCF displayed on-set of degradation at 261 degrees C, which was about 30 degrees C higher than St-TCF (234 degrees C). The julolidine chromophore blended in the polymer exhibited 32 pm/V of electro-optic coefficient, which was 30% larger than St-TCF at the same molar chromophore content.
Ju
Hyun Kyung
HK
Advanced Materials Division, Korea Research Institute of Chemical Technology, Daejeon 305-600, Korea.
Lee
Changjin
C
Kim
Dong Wook
DW