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標題: Dendronized organic-inorganic nonlinear optical hybrid materials with homogeneous morphology
作者: Chen, Y.C.
Yang, Y.J.
Juang, T.Y.
Chan, L.H.
Dai, S.A.
Chen, F.M.C.
Su, W.C.
Jeng, R.J.
關鍵字: Dendronized alkoxysilane dyes
Nonlinear optical (NLO)
Organic-inorganic materials
Temporal stability
sol-gel process
binary chromophore systems
self-repetitive reaction
highly efficient
polyurea/malonamide dendrons
electrooptic activities
alkoxysilane dye
host polymer
期刊/報告no:: Synthetic Metals, Volume 159, Issue 17-18, Page(s) 1852-1858.
摘要: To obtain excellent thermal stability. a series of dendronized organic-inorganic hybrids were synthesized and characterized. Dendronized alkoxysilane dyes were prepared via the ring opening addition reaction of azetidine-2,4-dione of chromophore-containing dendrons, with 3-aminopropyltriethoxysilane. Subsequently, the precursor, dendronized alkoxysilane dyes could be hydrolyzed and copolymerized with phenyl triethoxysilane (PTEOS) with the weight ratios of 1:1, 1:3, 1:5 and 1:7 in the presence of water and formic acid. After curing and poling process, organic-inorganic hybrid thin films with homogeneous morphology were obtained. Electro-optical (EO) coefficients (r(33)) of 2.9-13.0 pm/V were achieved. Due to the site-isolation effect, the sample with high generation dendrons possessed a higher EO coefficient/dye content ratio. In addition, because of the improved miscibility between organic and inorganic segments due to highly branched hydrogen bonding-rich dendrons, NLO polymers with waveguide properties ranging from 3.2 to 4.2 dB/cm at 1310 nm were obtained. These dendronized organic-inorganic NLO hybrids also show greatly enhanced temporal stability at 100 degrees C. (C) 2009 Elsevier B.V. All rights reserved.
ISSN: 0379-6779
Appears in Collections:化學工程學系所



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