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首页> 外文期刊>Chemistry: A European journal >Synthesis of novel rod-shaped and star-shaped fluorescent phosphane oxides - Nonlinear optical properties and photophysical properties
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Synthesis of novel rod-shaped and star-shaped fluorescent phosphane oxides - Nonlinear optical properties and photophysical properties

机译：新型棒状和星形荧光氧化膦的合成-非线性光学性质和光物理性质

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摘要

The design of a new class of fluorophores is presented. Some push-pull chromophores (D-pi-A) containing polyphenylethynyl units and a phosphane oxide moiety were efficiently prepared from common intermediates. Straightforward syntheses gave novel one-armed, rod-shaped and three-armed, star-shaped fluorophores. The optical properties of the resulting star-shaped derivatives were evaluated, showed high fluorescence quantum yields, and their excitation induces very efficient charge redistribution. More-over, thanks to their push-pull character, the molecules exhibited significant second-order NLO properties with good transparency, up to 67 center dot 10(-30) esu at 1907 nm, with an absorption lambda(max) at 369 nm. The effect of the donor group and of the number of phenylethynyl arms have been studied in this work.
机译：介绍了一种新型的荧光团的设计。从常见的中间体可以有效地制备一些含有聚苯乙炔基单元和氧化膦部分的推挽发色团（D-pi-A）。直接合成得到新颖的单臂，杆状和三臂，星形荧光团。评价了所得星形衍生物的光学性质，显示出高的荧光量子产率，并且它们的激发引起非常有效的电荷重新分布。此外，由于其推挽特性，这些分子表现出显着的二阶NLO性质，具有良好的透明度，在1907 nm处的中心点10（-30）esu高达67，在369 nm处的吸收λ（max） 。这项工作已经研究了供体基团和苯乙炔基臂数的影响。

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