手性联萘酚稀土配合物的合成及荧光性能研究

在无水无氧条件下,以氯化钐、氯化钆和R-联萘酚为原料室温合成了手性联萘酚稀土配合物{[(THF)2Na]3[Sm(R-BINOLate)3]}(1)和{[(THF)2Na]3[Gd(R-BINOLate)3]}(2),对所合成的配合物进行了荧光性能研究。研究表明,在λex=392 nm的最佳激发波长监控下,配合物(1)和(2)固体状态下都能发出粉红色荧光,配合物(1)的发射波长为662 nm、强度355 a.u.;配合物(2)的发射波长为652 nm、强度78 a.u.,均为联萘酚微扰的中心金属离子Sm3+,Gd3+的5D0→7F3特征吸收峰。

Synthesis and fluorescence study of chiral binaphthol rare earth complexes

All the experimental operations were carried out under the conditions of water-free and oxygen-free in nitrogen stream.The synthesis and characterization of novel enantiopure {[(THF)_2Na]_3[Sm(R-BINOLate)_3]} (1) and {[(THF)_2Na]_3[Gd(R-BINOLate)_3]} (2) were described.These complexes were synthesized by the reaction of anhydrous LnCl_3 with chiral R-BINOL in tetrahydrofuran at room temperature and were characterized by luminescence.The analysis of fluorescent shows that complexes exhibit pink luminescence at 662 nm of (1) with intensity 355 a.u.and 652 nm of (2) with intensity 78 a.u.when excited by ultraviolet light with the wavelength of 392 nm.It is considered that this fluorescence came from the transition from ~5D_0→~7F_3 of rare earth ions.