| 辅助配体导向合成两个锌金属配位聚合物:结构,稳定性和荧光性质 |
| Auxiliary Ligands Controlled Assembly of Two Zinc Coordination Polymers: Structures, Stability and Luminescence |
|
| 摘要: 以二苯-4,4'-二羧酸和六水硝酸锌为原料,在相同反应条件下,通过改变不同的辅助配体(2,2'-二甲基-4,4'-联吡啶和三乙烯二胺),合成出2个金属有机配位聚合物:{[Zn(DBA)(dmbpy)0.5]·2H2O}n (1)和[Zn2(DBA)2(dabco)]n (2)(H2DBA=二苯-4,4'-二羧酸,dmbpy=2,2'-二甲基-4,4'-联吡啶,dabco=三乙烯二胺)。通过元素分析、红外光谱、差热分析、X射线粉末衍射和X射线单晶衍射等手段对配合物进行了结构表征。结果显示,化合物1为二维(4,4)网络结构,2个二维结构在平行方向上通过互锁进一步形成2D→2D的互锁网络结构。化合物2为一维带状结构。热稳定性表明化合物1能够稳定到370℃;而化合物2稳定性差。荧光分析表明常温固态下配合物1和2均发射蓝色荧光,荧光寿命分别为231.4 ns和2.33 ns。 |
| 关键词: 配位聚合物 晶体结构 二苯-4,4'-二羧酸 荧光性质 |
| 基金项目: 粤西林产化工技术开发与应用研究中心项目基金(No.2014KTSPT040)资助项目 |
| Abstract: By changing the auxilary ligands, two zinc-based coordination polymers (CPs), {[Zn(DBA)(dmbpy)0.5]·2H2O}n (1) and [Zn2(DBA)2(dabco)]n (2) (DBA=4,4'-methylenedibenzoate, dmbpy=2,2'-dimethyl-4,4'-bipyridine, dabco=triethylenediamine) have been prepared based on 4,4'-methylenedibenzoate and Zn(NO3)2·6H2O under the same reaction conditions and were structurally characterized by elemental analysis, IR, TGA, powder X-ray diffraction and single-crystal X-ray diffraction. 1 is a 2D (4,4) network, and two nets interlock in parallel and give rise to a polycatenated layer (2D→2D). 2 is a ribbon-like infinite chain with dabco ligands point alternately up and down with respect to the chain. The results of thermal analysis indicate that 1 is quite stable up to 370℃, whereas 2 shows low thermal stability. Finally, both of 1 and 2 emit the intensely blue characteristic luminescence at room temperature, with lifetimes of up to 231.4 ns and 2.33 ns, respectively. |
| Keywords: coordination polymers crystal structure 4,4'-methylenedibenzoate luminescent |
| 投稿时间：2016-01-31 修订日期：2016-03-16 |
| 摘要点击次数: 1747 |
| 全文下载次数: 1732 |
| 郭培英,吕利霞,马德运,郭海福.辅助配体导向合成两个锌金属配位聚合物:结构,稳定性和荧光性质[J].无机化学学报,2016,32(5):921-927. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| Support information: 相关附件： file160083_Supplementary+material.doc |
|
|
|
|
|
|
