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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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n-芳基吡啶盐染料的一阶超极化率性质
DOI: 10.3969/j.jssn.1000-2006.2011.04.017, PP. 83-86
Keywords: 吡啶盐化合物,非线性光学,一阶超极化率,推拉结构,超瑞利散射
Abstract:
在纳秒激光器上通过超瑞利散射(hrs)技术测定了具有推拉结构的n-芳基取代吡啶盐类化合物的一阶超极化率，研究了它们的二阶非线性光学性质。结果表明，当吡啶环中n原子上的取代基由烷基变成芳基时，化合物的荧光发射强度急剧降低，但是一阶超极化率却明显增加。该系列化合物中两个相连的六元环破坏了吡啶盐的共轭平面结构，降低了化合物的荧光量子效率；另一方面，吡啶环上的取代芳基相对于烷基而言，其共轭体系增大，推拉电子能力增强，分子内电荷转移程度增大，从而提高了吡啶盐化合物的一阶超极化率。
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