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Fluorescent carbazole-containing dyes: Synthesis and supramolecular assembly by self-complementary donor-acceptor π-stacking and dipolar interactions
Dyes and Pigments ( IF 4.1 ) Pub Date : 2020-06-16 , DOI: 10.1016/j.dyepig.2020.108474
Xiaohui Li , Ying Wang , Fen Li , Xin Zhang

Six carbazole-based dyes were synthesized by fluorescence turn on amino-ene click reactions. Two high quality single-crystals of new dyes were prepared, and their X-ray diffraction structure analyses reveal the formation of antiparallel stacking superstructures driven by self-complementary dipole-dipole and π-stacking interactions between carbazole donors and acceptors. The optical behaviors and donor-acceptor interactions of these dyes were investigated by ultraviolet–visible absorption, fluorescence emission spectroscopy, and electrochemical cyclic voltammetry. Blue fluorescence appears and increases as dye-based supramolecular polymer grows, as revealed by dynamic light scattering, fluorescence, 1H NMR and 2D NMR spectroscopy.



中文翻译:

含咔唑的荧光染料:通过自互补供体-受体π堆积和偶极相互作用进行合成和超分子组装

通过荧光开启氨基烯点击反应合成了六种咔唑类染料。制备了两种高质量的新染料单晶,它们的X射线衍射结构分析揭示了咔唑供体与受体之间的自互补偶极-偶极和π堆积相互作用驱动的反平行堆积超结构的形成。通过紫外可见吸收,荧光发射光谱和电化学循环伏安法研究了这些染料的光学行为和供体-受体相互作用。动态荧光散射,荧光,1 H NMR和2D NMR光谱显示,随着染料基超分子聚合物的生长,蓝色荧光出现并增加。

更新日期:2020-06-30
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