含硝基噁二唑聚炔的合成及三阶非线性光学性能  

Synthesis and the Third-Order Nonlinear Optical Property of Oxadiazole-Containing Polyacetylene

作　　者：刘天宝[1] 汪新[1] 彭艳芬[1] 李敏[1] 严永新[1] 吴国志[1] 苏新艳[2] 徐洪耀[2] 

机构地区：[1]池州学院化学材料与工程实验中心,安徽池州247000 [2]东华大学纤维材料改性国家重点实验室,上海201620

出　　处：《高分子材料科学与工程》2012年第1期45-47,51,共4页Polymer Materials Science & Engineering

基　　金：安徽省高等学校省级优秀青年人才基金项目(2010SQRL133);安徽省自然科学基金资助项目(090414190);安徽省教育厅自然科学基金项目(KJ2010B135;KJ2009A122;KJ2011A208);国家自然科学基金资助项目(51003013);池州学院重点学科建设基金(2011XK04)

摘　　要：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）.

关 键 词：聚炔 噁二唑 非线性光学 热稳定性 

分 类 号：TB34[一般工业技术—材料科学与工程]