Design, synthesis, photophysical properties and pH-sensing application of pyrimidine-phthalimide derivatives
作者:Han Yan、Xinlei Meng、Baoyan Li、Shusheng Ge、Yun Lu
DOI:10.1039/c7tc03472e
日期:——
obvious solid-state fluorescence emission due to their twisted geometries and positive solvatochromism due to their different molecular conformations in various solvents. Owing to the different push–pull electronic effects of substituents on the pyrimidine moiety, PB and NPB, acting as D–π–A compounds, showed differentHOMO–LUMOgaps and a variable red-shifted emission in their solid state, substantiating
根据供体-π-受体(D-π-A)嘧啶-邻苯二甲酰亚胺衍生物的分子设计,两个新的非典型AIE生色团2-(4,6-二甲基嘧啶-2-基)异吲哚啉-1,3合成了1-二酮(PB)和2-(4,6-双(4-(二甲基氨基)苯乙烯基)嘧啶-2-基)异吲哚啉-1,3-二酮(NPB),并通过IR,1 H NMR进行了表征,13 C NMR和HRMS。既PB和NPB由于其扭曲的几何形状和正溶致变色由于在各种溶剂中的不同分子构象表现出明显的固态荧光发射。由于取代基对嘧啶部分,PB和NPB作为D-π-A化合物,在其固态下显示出不同的HOMO-LUMO间隙和可变的红移发射,从而证实了通过合理的分子设计有效地调节这些AIE生色团的光物理性质的可能性。此外,PB和NPB可以在氮原子处容易地和可逆地质子化,从而引起显着的颜色变化。这种现象为开发针对特定应用的新型比色pH传感器和逻辑门打开了潜在的途径。
CINGOLANI G. M.; GIARDINA D.; CAROTTI A.; CASINI G.; FERAPPI M., FARMACO. ED. SCI. <FSTE-AI>, 1976, 31, NO 2, 133-139
作者:CINGOLANI G. M.、 GIARDINA D.、 CAROTTI A.、 CASINI G.、 FERAPPI M.
DOI:——
日期:——
Synthesis and characterization of new N-{4,6-bis[2-(het)arylvinyl]pyrimidin-2-yl}-substituted polycyclic aromatic imides
作者:E. A. Komissarova、A. N. Vasyanin、V. E. Zhulanov、I. V. Lunegov、E. V. Shklyaeva、G. G. Abashev
DOI:10.1007/s11172-019-2614-0
日期:2019.9
Two series of new N-4,6-bis[2-(het)arylvinyl]pyrimidin-2-yl}-substituted aromatic polycyclic imides were synthesized. The synthesized chromophores were characterized by UV and fluorescence spectroscopy, cyclic voltammetry, and quantum chemical density functional theory calculations. A change in the nature of aryl (hetaryl) moieties was found to cause changes in the optical properties of both solutions