| 单相Mn基白光金属有机骨架的合成及荧光性能 |
| Synthesis and fluorescence properties of single-phase Mn-based white light metal-organic framework |
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| 摘要: 通过溶剂热法利用1，3，5-均苯三甲酸（H3btc）与金属盐MnCl2·4H2O反应，制备了一例新型白光金属有机骨架：（Me4N）3[Mn3（btc）2（Hbtc）（CH3COO）]·7CH3OH （1）。通过单晶X射线衍射和红外光谱对该化合物表征，并对其热稳定性及白色荧光性质进行研究。实验结果表明：在紫外光激发下，化合物1具有发光现象并在287、355、375 nm的激发光波长下分别发射出红光、白光及蓝光。在390 nm （λex=320 nm）处观察到配体H3btc的强发射带，这是由配体中心的电子跃迁引起的，即π→π*或π*→n电子跃迁。化合物1在455和675 nm （λex=355 nm）下显示双峰发射，与H3btc相比显示红移，这可能是配体到金属电荷转移（LMCT）的结果。通过CIE色度坐标将化合物1的发射光谱可视化后发现白光色度坐标为（0.286，0.256）。 |
| 关键词: 金属有机骨架 荧光性质 单相 白光 |
| 基金项目: 陕西省高校科协青年人才托举计划（No.20210608）、陕西省教育厅科研计划项目（No.22JK0373）、陕西省自然科学基础研究计划（No.2020-JQ899）和渭南师范学院人才项目（No.2021RC24）资助。 |
| Abstract: A novel white light metal-organic framework (Me4N)3[Mn3(btc)2(Hbtc)(CH3COO)]·7CH3OH (1) was prepared by a solvothermal method using 1,3,5-benzenetricarboxylic acid (H3btc) and MnCl2·4H2O. The compound was characterized by single-crystal X-ray diffraction and infrared spectrum, and its thermal stability and white fluorescence properties were studied. The results show that compound 1 emitted red light, white light, and blue light at 287, 355, and 375 nm, respectively. The emissions of the organic ligands H3btc (390 nm) may be ascribed to the π→π* or π*→n transitions. Compound 1 showed dual-modal emission at 455 and 675 nm (λex=355 nm) and showed a red shift compared to H3btc, which may be the result of ligand-to-metal charge transfer (LMCT). The CIE chromaticity coordinates were used to visualize the emission spectrum, and the white chromaticity coordinates were (0.286, 0.256). |
| Keywords: metal-organic framework fluorescent property single-phase white light |
| 投稿时间：2022-12-29 修订日期：2023-06-12 |
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| 王策,宋乃建,李菁熠.单相Mn基白光金属有机骨架的合成及荧光性能[J].无机化学学报,2023,39(9):1751-1756. |
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