| 基于(E)-N，N-二甲基-4-(2-(吡啶-4-基)乙烯基)苯胺的锌/镉有机-无机杂化金属卤化物的结构和发光性质 | |
| Structures and Photoluminescence Properties of Zinc(Ⅱ)/Cadmium(Ⅱ)-Based Organic-Inorganic Hybrid Metal Halides Derived from (E)-N,N-Dimethyl-4-(2-(pyridin-4-yl)vinyl) aniline | |
| 摘要: 以（E）-N，N-二甲基-4-（2-（吡啶-4-基）乙烯基）苯胺（EDPVA）为有机源，以金属卤化物ZnX2和CdX2为无机源，用相应的浓酸HX （X=Cl、Br）提供酸性介质，通过溶剂缓慢挥发法得到了4个离子型单核有机-无机杂化金属卤化物（H2EDPVA）[ZnCl4]（1）、（H2EDPVA）[ZnBr4]（2）、（H2EDPVA）[CdCl4]（3）和（H2EDPVA）[CdBr4]（4）。X射线单晶衍射分析表明，交替排列的刚性有机阳离子（H2EDPVA）2+和稍微扭曲的四面体形无机阴离子[MX4]2-（M=Zn、Cd； X=Cl、Br）之间存在静电作用和氢键。发光性质研究表明，化合物1~4的蓝色磷光峰分别位于459、446、440和434 nm，斯托克斯位移分别为79、72、61和55 nm，半峰宽分别为100、88、87和100 nm，发光寿命τ分别为0.47、8.38、18.38和11.62 μs。发光机理分析表明：化合物1~4的磷光发射是有机阳离子和无机阴离子协同作用的结果。 | |
| 关键词: 低维结构 杂化金属卤化物 光致发光 晶体结构 | |
| 基金项目: 国家自然科学基金（No.21101096）和河北省引进留学人员资助项目（No.C20200317）资助。 | |
| Abstract: With (E)-N,N-dimethyl-4-(2-(pyridin-4-yl)vinyl) aniline (EDPVA) as the organic source, and metal halides ZnX2 and CdX2 as the inorganic source, using the corresponding concentrated HX (X=Cl, Br) to provide acidic medium, four ionic mononuclear organic-inorganic hybrid metal halides, (H2EDPVA)[ZnCl4] (1), (H2EDPVA)[ZnBr4] (2), (H2EDPVA)[CdCl4] (3) and (H2EDPVA)[CdBr4] (4), were obtained by slow evaporation of solvent. Single crystal structure analysis shows that there were electrostatic interactions and hydrogen bonds between the alternative rigid organic cations (H2EDPVA)2+ and slightly distorted tetrahedral inorganic anions[MX4]2- (M=Zn, Cd; X=Cl, Br). The photoluminescence properties of compounds 1~4 showed that the blue phosphorescence peaks were at 459, 446, 440 and 434 nm, respectively; the Stokes shifts were 79, 72, 61 and 55 nm, respectively; the full widths at half-maximum were 100, 88, 87 and 100 nm, respectively; the luminescence lifetimes (τ) were 0.47, 8.38, 18.38 and 11.62 μs, respectively. According to the photoluminescence mechanism analysis, the phosphorescent emission of compounds 1~4 is the result of synergistic action of organic cations (H2EDPVA)2+ and inorganic anions[ZnX4]2- or[CdX4]2- (X=Cl, Br), respectively. | |
| Keywords: low dimensional structure hybrid metal halides photoluminescence crystal structure | |
| 投稿时间：2021-07-08 修订日期：2021-07-25 | |
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| 王申宇,陈典,刘晓莉,王硕文,苑亚南,王振平,杨春.基于(E)-N，N-二甲基-4-(2-(吡啶-4-基)乙烯基)苯胺的锌/镉有机-无机杂化金属卤化物的结构和发光性质[J].无机化学学报,2021,37(9):1659-1664. | |
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