Synthesis and Crystal Structure of 4-(N,N-Diphenylamino)styrene- 4′-N-methylpyridinium Iodine

The title compound 4-(N,N-diphenylamino)styrene-4′-N-methylpyridinium iodine (abbreviated to PASMPI) was synthesized by a facile condensation reaction with a high yield. The red crystal including a molecule of CHCl3 was obtained by recrystallization in chloroform/ethanol. Its crystal structure was determined by a four-circle diffractometer. The crystal data: C26H23N2ICHCl3, Mr = 609.73, orthorhombic, space group Pbca, a = 15.422(5), b = 14.042(5), c = 24.693(5) , V = 5347(3) 3, Z = 8, Dc = 1.515 g/cm3, F(000) = 2432, μ(MoKa) = 0.057 mm-1, the final R = 0.0439 and wR = 0.0772. The results reveal that the molecule is a completely reverse system. The molecular rotation from non-coplanar to coplanar may play an important role in increasing the fluorescence intensity under the condition of staining DNA.     

有机杂环类双光子材料的研究进展

综述了近年来不同结构的杂环类双光子材料的研究进展,并就其发展趋势进行了展望.指出双光子吸收材料在诸多领域有着潜在的应用前景,是光电功能材料领域研究的热点之一;其中杂环类化合物具有较强的推拉电子能力、高的光学稳定性、易修饰.能有效提高材料的双光子性能,是研究的重点.