枝化二阶非线性发色团分子的合成及在聚合物体系中的电光性能  

Synthesis of Dendronized NLO Chromophores and Research on Electro-optic Properties of Its Polymer Systems

作　　者：陈卓[1,2] 高武[1,2] 李晓东[1] 甄珍[1] 刘新厚[1] 

机构地区：[1]中国科学院理化技术研究所,中国科学院光化学转换与功能材料重点实验室,北京100190 [2]中国科学院研究生院,北京100049

出　　处：《高等学校化学学报》2010年第7期1369-1374,共6页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:20374058);中国科学院知识创新工程重要方向性项目(批准号:KJCX2.YW.H02)资助

摘　　要：设计合成了一类以2-二氰基次甲基-3-氰基-4,5,5-三甲基-2,5-二氢呋喃(TCF)为受体、己氧基取代噻吩为π电子桥的新型有机非线性光学化合物,并利用紫外光谱、红外光谱、核磁共振以及质谱对化合物分子结构进行了鉴定,同时对此类化合物在有机聚合物体系中的电光性能进行了表征和研究.结果发现,该类发色团分子与聚合物相容性好,电光活性高,并且随着发色团分子在聚合物体系中浓度的升高,聚合物体系的宏观电光活性也有所提高,甚至当发色团的掺杂质量分数高达47.2%时,体系的电光活性仍呈上升趋势,显示了该发色团的静电相互作用得到了明显抑制.此时测得聚合物体系的电光系数为30pm/V(1310nm).In order to reduce the electrostatic interaction between chromophores and increase their compatibility in the polymer,a kind of second order nonlinear optical（ NLO） active chromophores based on tricyanofuran（ TCF） as the acceptor and 3,4-disubstituted thiophene as the bridge were designed and prepared. The chromophores were characterized by UV,IR,1H NMR and MS. At the same time,the electro-optical performance of this compounds-doped polymer system was studied. We observed that the chromophore molecules had excellent compatibility with polymers and high electro-optic activity. The electro-optic coefficients（ r33 ） showed increase with the rising of the chromophore mass fraction. Even if the chromophore content was up to 47. 2% ,the electro-optic coefficients still rose. The r33value of polymer system was 30 pm/V at 1310 nm in this case. It is always showed that the electrostatic interaction between chromophores is suppressed. These results indicate that the chromophores and the compounds-doped polymer system are very promising candidates for practical applications in the field of electro-optics and photonics.

关 键 词：二阶非线性光学 电光材料 发色团 极化聚合物 

分 类 号：O625[理学—有机化学]