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首页> 外文期刊>Journal of Molecular Structure >Design, synthesis, linear and nonlinear photophysical properties and biological imaging application of a novel K-type pyrimidine-based thiophene derivative
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Design, synthesis, linear and nonlinear photophysical properties and biological imaging application of a novel K-type pyrimidine-based thiophene derivative

机译：一种新型的K型嘧啶基噻吩衍生物的设计，合成，线性和非线性光物理性质和生物成像应用

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摘要

A novel D-π-A-π-D type thiophene pyrimidine derivative, 2,20-thiophene-4, 6-bis (4-N,N-diethylbenzene ethenyl) pyrimidine (L), was designed, synthesized via Knoevenagel and Suzuki coupling reactions, and fully characterized. The results of X-ray diffraction analysis revealed that single crystal of L belongs to P2_12_12_1 non-centrosymmetric space group, and the whole molecular skeleton exhibits a good coplanarity. Systematic photophysical properties were investigated for L. The connections between the properties and structure were explained relying on theoretical calculation. The thiophene pyrimidine derivative shows strong third-order nonlinear optical response and large two-photon absorption (2PA) cross section in high polar solvents. Finally, preliminary exploration in biological imaging also has been carried out, it shows a good biological application prospect.
机译：设计了一种新型的D-π-A-π-D型噻吩嘧啶衍生物2,20-噻吩-4，6-双（4-N，N-二乙基苯乙炔基）嘧啶（L），并通过Knoevenagel和Suzuki合成偶联反应，并充分表征。 X射线衍射分析结果表明，L的单晶属于P2_12_12_1非中心对称空间群，整个分子骨架具有良好的共面性。研究了L的系统光物理性质。依靠理论计算解释了性质与结构之间的联系。噻吩嘧啶衍生物在高极性溶剂中显示出很强的三阶非线性光学响应和较大的双光子吸收（2PA）截面。最后，还对生物成像进行了初步探索，显示出良好的生物学应用前景。

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