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Two isomeric zeolite-like metal–organic frameworks with the formula of [(CH3)2NH2][Cd(TPO)]·xsolvent were successfully prepared and characterized. Both frameworks are constructed from tetrahedral TPO3− nodes and tetrahedrally connected Cd2+ nodes, representing rare examples of zeolite-like MOFs with an isomeric characteristic. Moreover, one of the frameworks shows mechanically responsive luminescence emission after the crystals are ground for different times. Additionally, it has permanent porosity, and can selectively adsorb CO2 over N2. [ABSTRACT FROM AUTHOR]

Two new luminescent metal-organic frameworks (MOFs), namely {[Cd(μ 2 -CN) 1/2 (1,4-BDC)(H 2 O)] 2 (p-tr 2 Ph)}∙2H 2 O (1) and [Cd 2 (1,4-BDC) 2 (H 2 O) 2 ] 2 (p-tr 2 Ph) (2) (1,4-H 2 BDC ​= ​1,4-dicarboxybenzene, p-tr 2 Ph ​= ​1,4-phenylene-4,4'-bis(1,2,4-triazole)) have been solvothermally synthesized and characterized. Single-crystal structural analysis reveals that compounds 1 and 2 show 3-fold and 4-fold interpenetrated 3-dimensional framework structures, respectively. Interestingly, 1 and 2 show unique luminescent emissions when they were excited under ultraviolet light with wavelength of 330 ​nm. For 1 , the luminescent emission intensity decreased as the temperature rose. While for 2 , the luminescent emission intensity firstly increased as the temperature rose from 80 to 130 ​K but it decreased when the temperature is above 130 ​K. In addition, the temperature-dependent luminescent emissions of both compounds show good linearity and reversibility in a wide range of temperatures, suggesting that 1 and 2 can serve as potential thermometers in specific areas. Two new luminescent metal-organic frameworks with 3-fold and 4-fold interpenetrated structures have been solvothermally synthesized and characterized. Compounds 1 and 2 exhibited distinct luminescent emission. In compound 1, the emission intensity decreased as the temperature rose. While in compound 2, the emission intensity firstly increased as the temperature rose from 80 to 130 ​K but it decreased when the temperature was above 130 ​K. [Display omitted] • Two metal-organic frameworks have been made and characterized. • The frameworks have nanoscale hexagonal and tetragonal channels. • Compound 1 shows an interesting temperature-dependent luminescent emission. • Compound 2 shows an uncommon luminescent emission behaviour. • This work enriches the structural diversities of temperature-dependent luminescent MOF materials. • This work provides an experimental reference for the design and fabrication of luminescent MOFs for temperature detection. [ABSTRACT FROM AUTHOR]