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新设计的碳纳米管锂盐的第一超极化率的理论研究

, PP. 66-70

Keywords: 锂盐,非线性光学,第一超极化率,密度泛函理论

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Abstract:

利用b3lyp/6-31g(d)方法对设计的30个碳纳米管锂盐(li-cnt)进行了结构优化和频率分析,并采用bhandhlyp/6-31g(d)方法计算了体系的第一超极化率.结果表明,锂原子掺杂的碳管具有较大的第一超极化率.当碳管径适当时,体系的第一超极化率随着管径的增加而增加.碳管的长度、极化率、电子延展广度r2和跃迁能δe对体系的第一超极化率β有一定的影响.另一方面,一些体系的分子第一超极化率与双能级模型吻合较好.

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