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氧化还原、改变受体调节二茂铁类配合物的非线性光学性质
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摘要
夹心型金属配合物在分子识别、催化、光学和生物传感器等领域有潜在应用。作为一种最重要的夹心型金属配合物,二茂铁因其独特的性质和热化学稳定性被广泛应用于非线性光学领域。我们研究了系列二茂铁衍生物受体基团的作用。结果表明,增加受体吸电子能力可导致第一超极化率值显著增强且分子开关效应明显。这主要由于二茂铁到受体基团的电荷转移混合着受体基团层与层之间的电荷转移。
Sandwich-type metal complexes have shown a potential application in the field of molecular recognition, catalysis, optics and biological sensors.As one of the most important sandwich-type metal complexes, ferrocene with its unique property and high thermal and chemical stability has been widely applied in the field of nonlinear optics(NLO).We investigated a series of ferrocene derivatives, which is composed of varied acceptors.Results show that increasing the ability of acceptor can cause a significant enhancement in first hyperpolarizability and result in the molecular switching with large NLO contrast.The increase of the first hyperpolarizabilities for these ferrocene derivatives are mainly of ferrocene to acceptor charge transfer and the mixture of intramolecular charge transfer within the respective acceptors coupled with interlayer charge transfer between two acceptors.
引文
[1]Wang,W.Y.;Ma,N.N.;Sun,S.L.;Qiu,Y.Q.Phys.Chem.Chem.Phys.2014,16:4900.
    [2]Kealy,T.J.;Pauson,P.L.Nature 1951,168:1039.

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