【无机化学学报】doi: 10.11862/CJIC.20240448
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(H2O)2]2·5DMF·2H2O (1) with a 1D structure and [Mg2(L)2(DMSO)3(H2O)] (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.
