A novel soluble π-conjugated polymer, poly [（3-acetylpyrrole-2, 5-diyl） p-（N, N-dimethylamino） azobenzylidene] （PAPDMAABE）, was synthesized by condensation of 3-acetylpyrrole with 4-aldehyde-4＇-dimethylaminoaz...A novel soluble π-conjugated polymer, poly [（3-acetylpyrrole-2, 5-diyl） p-（N, N-dimethylamino） azobenzylidene] （PAPDMAABE）, was synthesized by condensation of 3-acetylpyrrole with 4-aldehyde-4＇-dimethylaminoazobenzene （ADMAA）. The chemical structure of PAPDMAABE was characterized by Fourier transform infrared spectroscopy （FTIR）, ^1H-NMR, and UV-Vis-NIR spectra. Transmission electron microscope （TEM） analysis for PAPDMAABE indicates that part of PAPDMAABE is in crystal state, due to the short-range order of the polymer. Thermogravimetric analysis （TGA） curve shows that the polymer has good thermal stability and its decomposition temperature is 248℃. The optical band gap of PAPDMAABE obtained from the optical absorption spectrum is about 1.73 eV. The resonant third-order nonlinear optical property of PAPDMAABE at 532 nm was studied using degenerate four-wave mixing （DFWM） technique. The resonant third-order nonlinear optical susceptibility of the polymer is about 7.48×10^-8 esu.展开更多
A soluble poly（2-methoxy-5-decoxy）-p-phenylene vinylene （PMODOPV） was synthesized via dehydrochlorination reaction and characterized by UV-visible absorption spectrum. The results showed that PMODOPV had a broad o...A soluble poly（2-methoxy-5-decoxy）-p-phenylene vinylene （PMODOPV） was synthesized via dehydrochlorination reaction and characterized by UV-visible absorption spectrum. The results showed that PMODOPV had a broad optical absorption band in the range of 450--550 nm and the optical band gap was calculated to be around 2.12 eV. The third-order nonlinear optical susceptibilities （X^（3）） of PMODOPV films implanted by 30-keV N^＋ ions in the dose range of 3.8 × 10^15-9.6 × 10^16 ions/cm^2 were measured by degenerate four-wave mixing （DFWM） technique. The results demonstrated that the resonant and offresonant X^（3） values were all enhanced significantly by means of ion implantation. The maximum resonant X^（3） value of 9.67 × 10^-9 esu at 532 nm and off-resonant X^（3） value of 2.49 × 10^-10 esu at 1.064 μm were obtained when the ion dose was 3.8 × 10^16 ions/cm^2.展开更多
基金the National Natural Science Foundation of China for financial support of this work(No.60277002).
文摘A novel soluble π-conjugated polymer, poly [（3-acetylpyrrole-2, 5-diyl） p-（N, N-dimethylamino） azobenzylidene] （PAPDMAABE）, was synthesized by condensation of 3-acetylpyrrole with 4-aldehyde-4＇-dimethylaminoazobenzene （ADMAA）. The chemical structure of PAPDMAABE was characterized by Fourier transform infrared spectroscopy （FTIR）, ^1H-NMR, and UV-Vis-NIR spectra. Transmission electron microscope （TEM） analysis for PAPDMAABE indicates that part of PAPDMAABE is in crystal state, due to the short-range order of the polymer. Thermogravimetric analysis （TGA） curve shows that the polymer has good thermal stability and its decomposition temperature is 248℃. The optical band gap of PAPDMAABE obtained from the optical absorption spectrum is about 1.73 eV. The resonant third-order nonlinear optical property of PAPDMAABE at 532 nm was studied using degenerate four-wave mixing （DFWM） technique. The resonant third-order nonlinear optical susceptibility of the polymer is about 7.48×10^-8 esu.
基金This work was supported by the National Natural Sci-ence Foundation of China under Grant No. 60277002 the Scientific Research Foundation of Xi'an Jiao-tong University.
文摘A soluble poly（2-methoxy-5-decoxy）-p-phenylene vinylene （PMODOPV） was synthesized via dehydrochlorination reaction and characterized by UV-visible absorption spectrum. The results showed that PMODOPV had a broad optical absorption band in the range of 450--550 nm and the optical band gap was calculated to be around 2.12 eV. The third-order nonlinear optical susceptibilities （X^（3）） of PMODOPV films implanted by 30-keV N^＋ ions in the dose range of 3.8 × 10^15-9.6 × 10^16 ions/cm^2 were measured by degenerate four-wave mixing （DFWM） technique. The results demonstrated that the resonant and offresonant X^（3） values were all enhanced significantly by means of ion implantation. The maximum resonant X^（3） value of 9.67 × 10^-9 esu at 532 nm and off-resonant X^（3） value of 2.49 × 10^-10 esu at 1.064 μm were obtained when the ion dose was 3.8 × 10^16 ions/cm^2.
