Synthesis of Poly (3-acetylpyrrolyl methine) with Azobenzene Side Groups and Study on Its Third-order Nonlinear Optical Property

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摘要 Anovelsolubleπ-conjugatedpolymer,poly[(3-acetylpyrrole-2,5-diyl)p-(N,N-dimethylamino)azobenzylidene](PAPDMAABE),wassynthesizedbycondensationof3-acetylpyrrolewith4-aldehyde-4'-dimethylaminoazobenzene(ADMAA).ThechemicalstructureofPAPDMAABEwascharacterizedbyFouriertransforminfraredspectroscopy(FTIR),1H-NMR,andUV-Vis-NIRspectra.Transmissionelectronmicroscope(TEM)analysisforPAPDMAABEindicatesthatpartofPAPDMAABEisincrystalstate,duetotheshort-rangeorderofthepolymer.Thermogravimetricanalysis(TGA)curveshowsthatthepolymerhasgoodthermalstabilityanditsdecompositiontemperatureis248℃.TheopticalbandgapofPAPDMAABEobtainedfromtheopticalabsorptionspectrumisabout1.73eV.Theresonantthird-ordernonlinearopticalpropertyofPAPDMAABEat532nmwasstudiedusingdegeneratefour-wavemixing(DFWM)technique.Theresonantthird-ordernonlinearopticalsusceptibilityofthepolymerisabout7.48×10-8esu.
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出版日期 2005年05月15日(中国期刊网平台首次上网日期,不代表论文的发表时间)
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