Solution DFWM χ(3) non-linear optical properties of poly[(arylene)silylene]s and poly[(arylene)(ethynylene)silylene]s containing tetra- or hypercoordinate silicon
作者:William E. Douglas、Robert E. Benfield、Oleg L. Antipov、Larisa G. Klapshina、Alexander S. Kuzhelev、Daniel M. H. Guy、Richard G. Jones、Alkay Mustafa、George A. Domrachev
DOI:10.1039/b003046p
日期:——
some poly[(arylene)(ethynylene)silylene]s were found to be as high as ∣Re χ(3) ∣=0.95×10−10 esu for solutions of concentration 50 g l−1. The results show that the presence of a single 8-(dimethylamino)naphthyl ligand at silicon affording pentacoordination has a beneficial effect on the χ(3) properties. Comparison of the results for the poly[(arylene)silylene]s with those for the poly[(arylene)(ethynylene)silylene]s
在氯仿溶液中研究了一系列共轭聚[(亚芳基)(亚乙炔基)甲硅烷基]的三阶光学非线性,以及一系列互补的聚[(亚芳基)甲硅烷基]统计共聚物,没有乙炔基团。使用简并四波混频技术和 Q 开关 Nd:YAG 激光振荡器,波长为 1064 nm,脉冲持续时间为 ca。6纳秒。该聚合物含有多种亚芳基,包括咔唑和蒽。χ(3) 磁化率和解的热非线性的电子和核贡献是分开的。对于浓度为 50 gl-1 的溶液,发现一些聚 [(亚芳基)(亚乙炔基)亚硅烷基] 的 χ(3) 磁化率高达 ∣Re χ(3) ∣=0.95×10-10 esu。结果表明,在硅上存在提供五配位的单个 8-(二甲氨基)萘基配体对 χ(3) 特性具有有益的影响。比较聚[(亚芳基)亚硅烷基]s 与聚[(亚芳基)(亚乙炔基)亚硅基]s 的结果表明,前一种情况下乙炔基团的缺失通常对 χ( 3) 属性。非线性响应的数量级的确认已通过 Z 扫描测量得到证实