Experimental and theoretical studies on the one-photon and two-photon properties of a series of carbazole derivatives containing styrene
作者:Liang Li、Yiqun Wu、Qinling Zhou、Chunying He
DOI:10.1002/poc.1923
日期:2012.5
cross‐sections were calculated. The TPA properties of the series of compounds were investigated by the ZINDO/single and double electronic excitation configuration interaction method. The influence of the chemical structure of the compounds on two‐photon optical properties was discussed. The results show how the different changes in one‐photon absorption and TPA properties on the basis of lengthening the conjugated
对称型咔唑衍生物在双光子吸收(TPA)材料和有机发光二极管中显示出巨大的潜力。三种不同氮素的吸收光谱和荧光发射光谱研究了烷基对称型咔唑衍生物。理论上使用密度泛函理论(DFT)随时间变化的DFT // Becke,三参数Lee-Yang-Parr / 6-31 G *方法来研究单光子吸收特性。计算结果与可用的实验值非常吻合。化合物的双光子激发荧光是通过在790 nm的Ti:蓝宝石激光器以1 kHz重复频率工作的120 fs脉冲进行测量的。在380–600 nm范围内获得了双光子激发的荧光,并计算了TPA横截面。通过ZINDO /单双电子激发构型相互作用方法研究了该系列化合物的TPA性质。讨论了化合物的化学结构对双光子光学性质的影响。N-烷基取代基归因于激发过程中的跃迁偶极矩。版权所有©2011 John Wiley&Sons,Ltd.