| 取代苯甲酸根对银(Ⅰ)-四(4-吡啶基)乙烯金属有机框架材料的结构与发光性质调控 | |
| Structure and photoluminescence modulation of silver(Ⅰ)-tetra(pyridin-4-yl)ethene metal-organic frameworks by substituted benzoates | |
| 摘要: 选取了1，1，2，2-四(4-吡啶基)乙烯(TEPE)作为桥联配体与Ag(Ⅰ)组装形成阳离子框架，通过引入五氟苯甲酸根(PFB-)或苯甲酸根(Bz-)作为客体得到2例新颖的配合物：[Ag (TEPE)(H2O)](PFB)·7H2O·3EtOH (1)和[Ag (TEPE)](Bz)·4H2O·2EtOH (2)。通过热重分析、红外光谱和单晶X射线衍射等测试对二者的组成与结构进行分析表征。配合物1是一个二维“砖墙”式层状结构，具有经典的hcb拓扑网络。中心Ag(Ⅰ)与分别来自3个TEPE配体的3个氮原子和1个水分子配位，形成四面体的配位几何构型。PFB-客体分布于二维层间，与主体层间产生丰富的超分子相互作用。配合物2则呈现三维网络结构，Ag(Ⅰ)与分别来自4个TEPE配体的4个氮原子配位，Bz-客体填充在c轴方向形成的一维孔道中。配合物2的拓扑结构为sqc8116。在紫外光的激发下，2个配合物均表现出由阴离子客体引起的特征荧光性质。1发射红光，而2则发射蓝光。 | |
| 关键词: 1，1，2，2-四(4-吡啶基)乙烯 苯甲酸根 金属有机框架 银(Ⅰ) 发光 | |
| 基金项目: 国家自然科学基金(No.22131011，22488101，22071274)资助。 | |
| Abstract: 1,1,2,2-Tetra(pyridin-4-yl)ethene (TEPE) was chosen as a bridging ligand to assemble with Ag(Ⅰ) ions to form the cationic frameworks. And, the pentafluoro-benzoate anions (PFB-) and the benzoate (Bz-) anions as guests were introduced respectively to generate two new coordination compounds: [Ag (TEPE)(H2O)](PFB)·7H2O·3EtOH (1) and [Ag (TEPE)](Bz)·4H2O·2EtOH (2). The compositions and structures of complexes 1 and 2 were characterized using the thermogravimetric analysis, IR spectra, and single- crystal X-ray diffraction analysis. 1 possesses a 2D brick-like coordination layer structure with the classical hcb topology, each Ag(Ⅰ) center is coordinated with an aqua ligand and three N atoms from three TEPE ligands respectively, forming the distorted tetrahedral coordination geometry. The PFB- guests are distributed between the 2D layers to form diverse interactions with the main framework. 2 presents a 3D coordination network structure with the sqc8116 topology, in which each Ag(Ⅰ) center is coordinated in a tetrahedral geometry with four N atoms from four TEPE ligands respectively, and Bz- guests are located at the larger channels along the c-axis. Interestingly, two complexes showed the characteristic fluorescent properties regulated by photoactive guests. Excited by UV light, 1 exhibited a red emission while 2 showed a blue emission. | |
| Keywords: 1,1,2,2-tetra(pyridin-4-yl)ethene benzoate metal-organic framework silver(Ⅰ) photoluminescence | |
| 投稿时间：2024-11-01 修订日期：2024-12-01 | |
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| 丁乙,廖培毓,贾建华,童明良.取代苯甲酸根对银(Ⅰ)-四(4-吡啶基)乙烯金属有机框架材料的结构与发光性质调控[J].无机化学学报,2025,41(1):141-148. | |
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