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Aryl-substituted symmetrical and unsymmetrical benzothiadiazoles

机译:芳基取代的对称和不对称苯并噻二唑

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摘要

A set of benzothiadiazoles (BTD) of the type D-pi-A-pi-D and D-1-pi-A-pi-D-2 were designed and synthesized by the Pd-catalyzed Sonogashira cross-coupling reaction. Their photophysical and electrochemical properties were studied. The substitution of anthracene on BTD improves its thermal stability, and lowers the HOMO-LUMO gap, which results in a red shift of the electronic absorption. The experimental optical gap values show good agreement with the calculated HOMO-LUMO gap.
机译:通过Pd催化的Sonogashira交叉偶联反应设计并合成了一组D-pi-A-pi-D和D-1-pi-A-pi-D-2型苯并噻二唑(BTD)。研究了它们的光物理和电化学性质。蒽在BTD上的取代提高了其热稳定性,并降低了HOMO-LUMO间隙,这导致电子吸收发生红移。实验的光学间隙值与计算的HOMO-LUMO间隙显示出良好的一致性。

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