Abstract
We synthesized new nonlinear optical (NLO) chromophores containing a 3,5-bis(3,5-bisbenzyloxy-benzyloxy)-benzoate dendron. Tricyanopyrroline (TCP)-based chromophores were designed and prepared by virtue of its strong electron withdrawing property. A soluble polyimide containing 6-({4-[2-(1-allyl-4-cyano-5-dicyanomethy-lene-2-oxo-2,5-dihydro-1H-pyrrol-3-yl) -vinyl]-phenyl}-butyl-amino)-hexanoyl group in the side chain was also prepared as an NLO active host polymer. A benzoate dendron was tethered at two different binding positions of the chromophore to yield two different guest molecules. Thin-film composites of these dendronized chromophores dissolved in the NLO active polyimide host were employed to fabricate the electro-optic (EO) samples. The EO properties of new NLO polyimides containing dendronized chromophores were compared with those of the sample with nondendronized plain chromophores. The effect of a bulky dendron on the EO properties was investigated using an in situ reflection technique.
Original language | English |
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Pages (from-to) | 5064-5076 |
Number of pages | 13 |
Journal | Journal of Polymer Science, Part A: Polymer Chemistry |
Volume | 46 |
Issue number | 15 |
DOIs | |
Publication status | Published - 2008 Aug 1 |
Keywords
- Dendronized chromophore
- Host-guest-systems
- NLO
- Polyimides
- Tricyanopyrroline
ASJC Scopus subject areas
- Polymers and Plastics
- Organic Chemistry
- Materials Chemistry