首页> 美国卫生研究院文献>Proceedings of the National Academy of Sciences of the United States of America >An investigation of the interrelationships between linear and nonlinear polarizabilities and bond-length alternation in conjugated organic molecules.
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An investigation of the interrelationships between linear and nonlinear polarizabilities and bond-length alternation in conjugated organic molecules.

机译:研究共轭有机分子中线性和非线性极化率与键长交替之间的相互关系。

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摘要

A computational method was devised to explore the relationship of charge separation, geometry, molecular dipole moment (mu), polarizability (alpha), and hyperpolariz-abilities (beta, gamma) in conjugated organic molecules. We show that bond-length alternation (the average difference in length between single and double bonds in the molecule) is a key structurally observable parameter that can be correlated with hyperpolarizabilities and is thus relevant to the optimization of molecules and materials. By using this method, the relationship of bond-length alternation, mu, alpha, beta, and gamma for linear conjugated molecules is illustrated, and those molecules with maximized alpha, beta, and gamma are described.
机译:设计了一种计算方法来探索共轭有机分子中电荷分离,几何形状,分子偶极矩(μ),极化率(α)和超极化能力(β,γ)之间的关系。我们表明,键长交替(分子中单键和双键之间的平均长度差)是可与超极化相关的关键结构可观察参数,因此与分子和材料的优化有关。通过使用此方法,说明了线性共轭分子的键长交替,μ,α,β和γ的关系,并描述了具有最大α,β和γ的那些分子。

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