设计合成了一种含硝基噁二唑功能基的聚炔材料。通过红外光谱（IR）和核磁共振（1H-NMR）对该聚炔化合物进行了结构表征。利用紫外光谱（UV-vis）和热重分析（TGA）对其性能进行了评价。TGA显示其热稳定性相对于单体有很大提高,UV-vis表明它在500 nm以上长波区吸收很弱。该聚炔化合物的非线性光学性能借助Z-scan技术进行研究,其χ（3）达3.25×10-11（esu）。与含烷基的同类聚炔比较,拉电子基团硝基有效地提高了含噁二唑聚炔的三阶非线性光学性能。
The oxadiazole-containing polyacetylene was synthesized in satisfactory yield with [Rh（nbd）Cl]2 catalyst.The structure and properties of the monomer and the polymer were characterized and evaluated with Fourier transform infrared spectrum（FT-IR）,1H nuclear magnetic resonance spectrum（1H-NMR）,UV-vis and thermogravimetric analysis（TGA）.The nonlinear optical property is performed with 4 ns pulse width at 532 nm wavelength.The polymer is thermally stable and the decomposed temperature is as high as ~370 ℃.The weak electronic absorption of the polymer is observed when the wavelength is over 500 nm.The result of Z-scan measurement reveals that the oxadiazole-containing polyacetylene with nitro group shows larger third order nonlinear optical susceptibility（up to 3.25×10-11esu）.
参考文献
| [1] | Ishifuji, M;Mitsuishi, M;Miyashita, T .Bottom-up Design of Hybrid Polymer Nanoassemblies Elucidates Plasmon-Enhanced Second Harmonic Generation from Nonlinear Optical Dyes[J].Journal of the American Chemical Society,2009(12):4418-4424. |
| [2] | Shouchun Yin;Hongyao Xu;Xinyan Su;Yachen Gao;Yinlin Song .Synthesis and optical properties of azobenzene-containing poly(l-alkyne)s with different spacer lengths and ring substituents[J].Polymer: The International Journal for the Science and Technology of Polymers,2005(23):10592-10600. |
| [3] | Xin Wang;Shanyi Guang;Hongyao Xu .Thermally stable oxadiazole-containing poly acetylenes: Relationship between molecular structure and nonlinear optical properties[J].Journal of Materials Chemistry: An Interdisciplinary Journal dealing with Synthesis, Structures, Properties and Applications of Materials, Particulary Those Associated with Advanced Technology,2008(35):4204-4209. |
| [4] | Wang X;Wu JC;Xu HY;Wang P;Tang BZ .Preparation and property of two soluble oxadiazole-containing functional polyacetylenes[J].Journal of Polymer Science, Part A. Polymer Chemistry,2008(6):2072-2083. |
| [5] | Sheik-Bahae M.;Said A.A. .Sensitive measurement of optical nonlinearities using a single beam[J].IEEE Journal of Quantum Electronics: A Publication of the IEEE Quantum Electronics and Applications Society,1990(4):760-769. |
| [6] | Lam JWY.;Dong YP.;Cheuk KKL.;Xu KT.;Tang BZ.;Kong XX. .Synthesis and properties of liquid crystalline polyacetylenes with different spacer lengths and bridge orientations [Review][J].Macromolecules,2000(14):5027-5040. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%