Luminescence thermochromism of two entangled copper-iodide networks with a large temperature-dependent emission shift

Abstract

The luminescence thermochromism properties of two entangled copper(I)-iodide coordination polymers formulated [Cu4I4(dmimpr)2]n (1) and [Cu6I6(dimb)3]n (2) (dmimpr = 1,3-di(2-methyl-imidazol-1-yl)propane, dimb = 1,4-di(imidazol-1-yl)butane) are reported. Upon cooling by liquid nitrogen, their solid-state luminescences at room temperature are drastically changed with the large red-shifts of 41 and 78 nm for 1 and 2, respectively. The correlation between luminescence thermochromism and temperature-dependent variation of the Cu···Cu distance is also elucidated.

Cu(I) hybrid inorganic–organic materials with intriguing stimuli responsive and optoelectronic properties

“…The same group reported on the solvothermal reaction of CuI with dmimpr or dimb (dmimpr = 1,3-di(2-methyl-imidazol-1-yl)-propane, dimb = 1,4-di(imidazol-1-yl)butane) that yielded the coordination polymers [Cu 4 I 4 (dmimpr) 2 ] n , 34 and [Cu 6 I 6 (dimb) 3 ] n , 35 [43]. X-ray diffraction analysis revealed, for the Cu 4 I 4 cluster in 34, Cu···Cu distances shorter or comparable to the 2.8 Å critical value.…”

Construction of Zn(II)/Cd(II) coordination polymers derived from a tetrazole derivative: Syntheses, structures and luminescent properties

“…From the results above, the lifetimes of complexes 1-3 are in the range of nanoseconds, indicating that the emissions are fluorescent in nature[34][35][36].…”

Crystal structure of poly[(thiophene-3,4-dicarboxylato-κ1 O)bis[1,2-bis(4-pyridyl)ethane-κ2 N:N′]silver(I)] octahydrate, C30H42Ag2N4O12S

“…In the past decades, the syntheses of silver (I) complexes have attracted great interest because the silver(I) exhibits diverse coordination geometries such as linear, trigonal, squareplanar and octahedral ones [2][3][4][5][6]. In recent years, many MOFs with more than two polymeric substructures in the crystalline state have been reported, which usually occur in an interpenetrating fashion [7,8].…”