2-(2-苯并咪唑基)-6-甲基吡啶铜(I)溴化物的合成与发光  

Synthesis and luminescence of cuprous bromide compound of 2-(2-benzimidazolyl)-6-methylpyridine

作　　者：何丽华[1] 陈景林[2] 曹兴付[2] 陈琇琇 谭秀珍[2] 温和瑞[2] 

机构地区：[1]江西理工大学理学院,江西赣州341000 [2]江西理工大学冶金与化学工程学院,江西赣州341000

出　　处：《有色金属科学与工程》2012年第3期6-9,共4页Nonferrous Metals Science and Engineering

基　　金：国家自然科学基金项目(21163009);教育部科学技术研究重点项目(211088);国家留学人员科技活动项目择优资助(赣人社字[2011]474号);江西省自然科学基金项目(2009GQH0038);江西省教育厅科技项目(GJJ10151)

摘　　要：一价铜配合物因具有丰富的光物理性质和良好的潜在应用而被广泛研究.文中选用2-(2-苯并咪唑基)-6-甲基吡啶(Hbmp)作为二齿螯合配体,与溴化亚铜和三苯基膦进行分子组装反应,合成得到一单核的一价铜溴化物[Cu(Hbmp)(PPh3)Br](1),并对其晶态结构特征和固态光致发光性能进行了研究.研究表明:配合物1的中心铜原子采取四配位方式,分别与一个溴、一个磷和两个氮原子相连,这四个配位的原子共同组成一个变型的四面体构型,这些相邻的配合物分子又通过Hbmp配体间存在的弱π-π作用发生有序堆叠排列并形成一维的链状结构.配合物1在室温下表现出强的固态光致磷光发射,其磷光发射主要来源于金属到配体和卤素到配体两种电荷转移跃迁.Copper （I） complexes have been widely investigated for their favorable photophysical properties and excellent potential applications. A mononuclear copper（I） bromide compound [Cu（Hbmp）（PPh3）Br] （1） （where Hbmp denotes 2-（2-benzimidazolyl）-6-methylpyridine） was synthesized by treating cuprous bromide in dichloromethane with triphenylphosphine and Hbmp used as a bidentate chelating ligand. Both the crystal structure and the solid- state emission of complex 1 were studied. The research revealed that the copper atom of complex 1 is four- coordinate locating in a distorted tetrahedral configuration formed by one bromine atom, one phosphorus atom, and two nitrogen atoms. These adjacent [Cu（Hbmp）（PPh3）Br] molecules orderly stack and array one another via weak in termolecular П-П interactions between the Hbmp ligands and assemble into an one-dimensional chain arrangement. Complex 1 displays a strong solid-state photo-phosphorescence at ambient temperature, which is ascribed to the metal -to -lig and charge transfer character. （MLCT） transition mixed with some halide-to-ligand charge transfer （XLCT）

关 键 词：一价铜配合物 氮杂环螯合配体 晶体结构 光致发光性质 

分 类 号：TF811[冶金工程—有色金属冶金]