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Dendronized tricyanopyrroline-based chromophores in nonlinear optical active host polymer

Authors
Hoang, Mai HaKim, Myung HeeCho, Min JuKim, Kyung HwanKim, Kyu NamJin, Jung-IlChoi, Dong Hoon
Issue Date
1-8월-2008
Publisher
WILEY
Keywords
dendronized chromophore; host-guest-systems; NLO; polyimides; tricyanopyrroline
Citation
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, v.46, no.15, pp.5064 - 5076
Indexed
SCIE
SCOPUS
Journal Title
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
Volume
46
Number
15
Start Page
5064
End Page
5076
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/122877
DOI
10.1002/pola.22834
ISSN
0887-624X
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-dicyanomethylene-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 (ED) samples. The ED 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 ED properties was investigated using an in situ reflection technique. (C) 2008 Wiley Periodicals, Inc.
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