摘要
以Eu2O3、2,2'-联吡啶-3,3'-二羧酸、H2O为原料,采用水热法合成了一种新的具有二维结构的吡啶羧酸类配位聚合物[Eu2(C12H6N2O4)3(H2O)2·5H2O]n,在显微镜下观察该配合物晶体呈无色透明片状。实验采用单一变量法探讨了影响反应的四个因素,得出最佳合成条件为:160℃下恒温72 h,降温速度2℃/h,pH=3.4,溶剂为10mL去离子水。X-射线单晶衍射、TGA以及荧光性能测试结果表明:该晶体属于单斜晶系,P2/c空间群;热稳定性较好,骨架在390℃以下可以稳定存在;具有良好的荧光特性。
A novel two-dimensional network complex of europium with 2,2＇-bipyridyl-3,3＇-dicarboxylate, [ Eu2 （CI2H6N204）3 （H20）2 5H20] n, has been synthesized by a hydrothermal reaction. The crystals were colorless transparent sheets. The effects of varying four experimental conditions were investigated using a single variable method. The optimized reaction conditions were found to be： reaction temperature of 160℃ ; reaction time of 72 h; cooling rate of 2℃/h ; pH of 3.4 ; 10 mL of deionized water as solvent; molar ratio of Eu203 ： 2,2＇-bipyridyl-3,3 ＇- dicarboxylic acid of 1 ： 3. The compound crystallizes in the monoclinic system, space group P2/c, is thermally sta- ble up to 390 ℃, and shows intense fluorescence.
出处
《北京化工大学学报（自然科学版）》
CAS
CSCD
北大核心
2013年第5期29-33,共5页
Journal of Beijing University of Chemical Technology(Natural Science Edition)
