| 两个Mg(Ⅱ)金属有机框架的合成、晶体结构及截然相反的机械刺激发光响应 |
| Syntheses, crystal structures, and diametrically opposed mechanically-stimulated luminescence response of two Mg(Ⅱ) metal-organic frameworks |
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| 摘要: 通过 5-{1，3-dioxo-1H-benzo[de]isoquinolin-2(3H)-yl}terephthalic acid(H2L)与 Mg2+反应合成出 2个新的金属有机框架：具有一维链结构的[Mg(L)(DMF)2(H2O)2]2·5DMF·2H2O (1)和具有二维(4，4)网结构的[Mg2(L)2(DMSO)3(H2O)] (2)。有趣的是，化合物1和2对外部机械刺激表现出截然不同的发光响应。1具有优异的抗机械变色发光性能，这可归因于其结构中以氢键为主导的弱相互作用以及存在大量高沸点溶剂分子。2 具有可逆的机械变色发光性能，这可归因于其结构中以 π-π为主导的弱相互作用，以及其晶态结构在研磨/熏蒸作用下的可逆破坏和恢复。 |
| 关键词: 金属有机框架|晶体结构|机械变色发光|抗机械变色发光|弱相互作用 |
| 基金项目: 国家自然科学基金(No.21871038)资助。 |
| Abstract: The reaction of Mg2+ and 5-{1,3-dioxo-1H-benzo[de]isoquinolin-2(3H)-yl}terephthalic acid (H2L) leads to two metal-organic frameworks, [Mg(L) (DMF)2(H2L)2]2·5DMF·2H2L (1) with a 1D structure and [Mg2(L)2(DMSO)3 (H2L)] (2) with a 2D (4,4)-net structure. Interestingly, the two compounds exhibit distinct luminescent responses to external mechanical stimuli. 1 exhibited exceptional resistance mechanical chromic luminescence (RMCL), which can be attributed to the predominant hydrogen bonds and the presence of high-boiling-point solvent molecules within its structure. 2 had a reversible MCL property, which can be attributed to the dominant π-π weak interactions, coupled with the reversible destruction/restoration of its crystallinity under grinding/fumigation. |
| Keywords: metal-organic framework|crystal structure|mechanical chromic luminescence|resistance mechanical chromic luminescence|weak interaction |
| 投稿时间：2024-12-20 修订日期：2025-04-05 |
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