摘要
以自制的柔性1,6-双(苯并三氮唑)烷烃为桥连配体,以溴离子为第二桥连配体,以期与d10过渡金属Cu(I)通过自组装反应获得具有新颖结构和优良荧光性能的配位聚合物.在乙醇溶剂热条件下,合成了一个结构新颖的配位聚合物:{[CuBr]4(BBTH)}n.X-射线单晶分析表明配位聚合物属于单斜晶系,空间群为C2/c,晶胞参数a=12.729 8(13),b=15.455 6(16),c=12.939 5(13),β=94.538 0(10)°,V=2 537.8(4)3,Z=4.配位聚合物的两个中心铜原子均采取变形的四面体配位模式分别与一个来自配体(BBTH)的氮原子和三个桥联溴原子进行配位,每个Cu+或Br-连接相邻的三个Br-或Cu+形成一个新颖的梯子链状结构,进而通过配体(BBTH)的连接形成二维层状结构.通过元素分析、X-射线粉末衍射、红外光谱、热重分析、固体荧光光谱等手段对配位聚合物进行了全面的表征.热重分析结果表明,配位聚合物在300℃以下无分解反应,耐热性好.室温固态荧光测试显示,配位聚合物在392nm(λmax)处具有较强的荧光发射.
The self-assembly of 1 ,6-bi (benzotriazole) hexane (BBTH) flexible ligand and CuBr is carried to obtain a coordination polymer with novel structure and excellent fluorescence property .A novel coordination polymer ,namely ,{[CuBr ]4 (BBT H )}n ,was synthesized successfully under ethanol solvothermal condition .Single-crystal structure analysis show s that coordination polymer crystallizes in the monoclinic space group C2/c ,a= 12 .7298 (13)?,b= 15 .455 6 (16)?,c= 12 .939 5 (13)? ,β=94 .538 0(10)° ,V=2 537 .8(4)?3 ,Z=4 .There exist two independent four-coordinated copper centers and each copper atom presents a distorted tetrahedron ,defined by one nitrogen atom from one ligand and three bromine atoms .Each Cu+ or Br - links three neighboring Br - or Cu+ to form a novel distorted double-stranded ladder chain ,w hich is further linked by BBT H ligands ,forming the 2D layer structure .{[CuBr]4 (BBTH)}n was characterized by elementary analysis ,thermogravimetric analysis ,X-ray powder diffraction (XRPD ) ,IR and solid state fluorescence .Thermogravimetric analysis indicates that the coordination polymer has good thermal stability without decomposition reaction below 300 ℃ and exhibits a strong fluorescence-emission (λmax =392 nm) in the solid state at room temperature .
出处
《西安工业大学学报》
CAS
2013年第8期657-663,共7页
Journal of Xi’an Technological University
基金
国家自然科学基金(21273171)
陕西省教育厅专项科研计划项目(11JK0578)
关键词
配位聚合物
铜(I)
柔性配体
晶体结构
coordination polymer
Cu(I)
flexible ligand
crystal structure
