Fig. 5: Characterization and structural illustration of anisotropic rigidification in Zr-TCPE by linker installation.
From: Anisotropic flexibility and rigidification in a TPE-based Zr-MOFs with scu topology

a The fluorescence emission spectra of Zr-TCPE-L1, Zr-TCPE-L2, and Zr-TCPE-DLI before and after heating at 250 °C for 6 h in methanol solution (λex = 340 nm). b Experimental and simulated 2H SSNMR spectra of Zr-TCPE (left) and Zr-TCPE-L1 (right) at 300 K, 323 K, and 350 K, respectively. The solid lines represent the experimental results, and the dotted lines represent the simulated results. The illustration of rigidifying the anisotropic flexibility c along the b-axis in Zr-TCPE-L1, d along the c-axis in Zr-TCPE-L2, and e along both b-axis and c-axis in Zr-TCPE-DLI.