| 有机分子三阶非线性极化率研究进展 |
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| 引用本文： | 钱鹰,林保平,孙岳明,袁春伟.有机分子三阶非线性极化率研究进展[J].精细化工,2006,23(5):424-428,465. |
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| 作者姓名： | 钱鹰 林保平 孙岳明 袁春伟 |
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| 作者单位： | 1. 东南大学,化学化工系,江苏,南京,210018
2. 东南大学,生物分子电子学国家重点实验室,江苏,南京,210018 |
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| 基金项目： | 东南大学校科研和教改项目 |
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| 摘 要： | 综述了有机分子三阶非线性极化率的计算方法和实验测量原理与技术。三阶非线性极化率的计算方法主要有求导法、态叠加法、耦合振子法。常用的非线性测量方法主要有四波混频法、三次谐波法、光克尔效应、Z-扫描法等。依据三能级模型探讨了有机分子的结构与三阶非线性极化率之间的构效关系。研究表明,优化分子结构,产生有效的离域电子共轭结构和高效分子内电荷转移,可以增大有机分子三阶非线性极化率。引用文献32篇。
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| 关 键 词： | 有机分子 三阶非线性极化率 构效关系 |
| 文章编号： | 1003-5214（2006）05-0424-06 |
| 收稿时间： | 2005-10-10 |
| 修稿时间： | 2005-10-102005-11-03 |
The Third-order Polarizability of Organic Molecule |
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| QIAN Ying,LIN Bao-ping,SUN Yue-ming,YUAN Chun-wei.The Third-order Polarizability of Organic Molecule[J].Fine Chemicals,2006,23(5):424-428,465. |
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| Authors: | QIAN Ying LIN Bao-ping SUN Yue-ming YUAN Chun-wei |
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| Affiliation: | 1. Department of Chemistry and Chemical Engineering, Southeast University, Nanjing 210018, Jiangsu, China ;2. National Laboratory of Molecular and Biomolecular Electronics, Southeast University, Nanjing 210018, jiangsu, China |
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| Abstract: | The third-order nonlinear optical response in organic molecules and its theoretical calculation methods and experimental measuring techniques are reviewed.In quantum-chemical calculations,there are three main approaches,namely derivatives,sum over states and coupled-oscillator techniques.The main techniques for measuring the third-order polarizabilities are third-harmonic generation(THG),four-wave mixing(DFWM),optical Kerr gate(OKG) and Z-scan methods.The enhancement for the third-order polarizability comes from effective conjugation path of the delocalized electrons and efficient intermolecular chargetransfer.32 refs are cited. |
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| Keywords: | organic molecules third-order polarizability structure-property relationship |
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