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均三嗪衍生物的合成、结构及二阶非线性光学性质 被引量:5

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摘要 合成了三个均三嗪衍生物并测定了相应的晶体结构.化合物I:2,4-Dimethyl-6-(p-N,N-dimethylaminostyryl)-s-triazine(简称为NMe-1).化合物II:2,4-Dimethyl-6–(p-N,N-diethylaminos-tyryl)-s-triazine(简称为NEt-1).化合物III:2-Methyl-4,6-bis(p-N,N-dimethylaminostyryl)-s-triazine(简称为NMe-2).NMe-1和NEt-1属D-π-A型一维电荷转移化合物,前者结晶为中心对称的空间群P1;后者结晶为极性空间群Cc,分子电荷转移轴同向平行排列.在1064nm基频光下,NEt-1的粉晶倍频光强度为尿素的46.8倍.NMe-2具有Λ型二维电荷转移结构,结晶为极性空间群P21,其粉晶倍频光强度为尿素的46.2倍.用量化计算和张量分析的方法探讨了分子的微观二阶非线性系数(β值)和堆积方式对晶体的宏观二阶非线性效应的影响.
出处 《中国科学(B辑)》 CSCD 北大核心 2005年第2期137-143,共7页 Science in China(Series B)
基金 国家自然科学基金(批准号:20172034 20472044) 教育部博士点基金资助项目
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同被引文献31

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