两个单核配合物晶态荧光材料的合成、晶体结构及性质

Synthesis,Crystal Structures and Properties of Two Crystalline Luminescent Materials of Mononuclear Complexes

在水中采用蒸发溶剂的方法,合成了两个晶态单核配合物[Co(phen)3]·2H2SPA·0.5HSPA·10H2O(1)和[Ni(phen)2(H2O)2]·H2SPA·0.5HSPA·3H2O(2)(H2SPA-=间苯二甲酸-5-磺酸根阴离子,phen=1,10-邻菲罗啉)。在配合物1中,中心离子与三个1,10-邻菲罗啉配位,形成[Co(phen)3]2+。未配位的水分子与阴离子H2SPA-和HSPA2-通过氢键相互连接形成三维的网状结构。在配合物2中,中心离子与两个1,10-邻菲罗啉分子和两个水分子配位,构成阳离子[Ni(phen)2(H2O)2]2+。阳离子[Ni(phen)2(H2O)2]2+与自由的阴离子H2SPA-、阴离子HSPA-和未配位的水分子通过氢键连接形成三维网状结构。室温下两个配合物均具有荧光发射峰,其发射峰分别在460 nm和439 nm。与配体相比,均发生明显的红移。荧光寿命分别为1.1244 ns和1.4882 ns。

The two crystalline mononuclear complexes [Co（ phen）3]·2H2SPA ·0. 5HSPA ·10H2O（ 1） and [Ni（ phen）2（ H2O）2]· H2 SPA · 0. 5HSPA · 3H2O（ 2）（ H2SPA-= 5-Sulfoisophthalic anion,phen = 1,10-phenanthroline） were synthesized in the water by the slow solvent evaporation method. For the complex 1,the central ion coordinates with three 1,10-phenanthroline ligands to generate the [Co（ phen）3]2 ＋cation. The free water molecules connect to the H2SPA-and HSPA2-anions to form three-dimensional network structure through the hydrogen bonds. For the complex 2,the central ion coordinates with two 1,10-phenanthroline and two water molecules to form the [Ni（ phen）2（ H2O）2]2 ＋cation,which connects the H2SPA-,HSPA2-cations and uncoordinated water molecules to form the three-dimensional network structure. The complexes exhibit the luminescence with emission peaks at 460 nm and 439 nm at room temperature,respectively. Compared with the ligands,their luminescence emission happens obvious red shift. The fluorescence lifetimes are 1. 1244 ns and 1. 4882 ns,respectively.