Magnetic refrigeration and luminescent sensing properties of two porous heterometallic lanthanide-copper mental-organic frameworks

Two porous lanthanide-copper mental-organic frameworks [Ln 2 Cu 4 I 3( IN) 7 (DMA) 2 ]·DMA (Ln = Gd ( 1 ) and Tb ( 2 ) assembled by [Cu 4 I 3 ] clusters and 1D lanthanide chains were successfully obtained and characterized. Magnetic studies suggest 1 displays remarkable magnetocaloric effect with -Δ S m max value of 15.06 J K −1 Kg −1 . Luminescent investigations reveal that 2 as luminescent detector can sensitively detect aniline. • Two lanthanide-copper mental-organic frameworks were structurally characterized. • 1 displays obvious magnetic refrigeration with the maximal magnetic entropy change of -Δ S m = 15.06 J K −1 Kg −1 . • Compound 2 can serve as a luminescent sensor for aniline. Two heterometallic lanthanide-copper mental-organic frameworks, [Ln 2 Cu 4 I 3( IN) 7 (DMA) 2 ]·DMA (Ln = Gd ( 1 ) and Tb ( 2 ); HIN = isonicotinic acid) have been successfully synthesized and characterized. Structural analysis suggest that 1 and 2 built by [Cu 4 I 3 ] clusters and 1D lanthanide chains feature a 3D framework with open 1D nanotubular channels. Magnetic investigations of 1 revealed it displays obvious magnetic refrigeration with the maximal magnetic entropy change of -Δ S m = 15.06 J K −1 Kg −1 at T = 2.5 K and Δ H = 7.0 T. Additionally, luminescent studies indicated that 2 can act as luminescent sensor to selectively detect aniline.