Electrical conductivity and electroluminescence of a new anthracene-based metal–organic framework with π-conjugated zigzag chains

Abstract

A new three-dimensional microporous MOF has been constructed using a highly conjugated anthracene-based ligand. The rarely occurring long-range π-stacking of the ligand in the form of a zigzag chain has been found in the MOF structure, which provides not only a new charge transport pathway with high electrical conductivity of 1.3 (±0.5) × 10(-3) S cm(-1) but also an electroluminescence property with an emission centred at 575 nm.

Electrically Conductive Porous Metal–Organic Frameworks

“…Thef ield of electrically conductive MOFs has seen tremendous growth in the past several years and has yielded av ariety of two-and three-dimensional MOFs with high charge mobility and/or electrical conductivity.R elevant data for the conductive MOFs reported to date is summarized in Table 1. (Note added in proof:a2,5-dihydroxybenzoquinonebased MOF ((NBu 4 ) 2 Fe III 2 (dhbq) 3 , s = 0.16 Scm À1 ,p ressed pellet, two-probe) [95] and an anthracene-based MOF (NNU-27, s = 1.3 10 À3 Scm À1 ,s ingle crystal, two-probe) [96] with high electrical conductivity have recently been reported. The physical properties of these two MOFs are also listed in Table 1.)…”

“…0.041 (125-300 K) 214 m 2 g À1 Zn 2 (TTFTB) [72,73] 4.0 10 À6 (crystal, 2-probe) [h] 0.2 (TRMC/TOF) N.R. 662 m 2 g À1 537 m 2 mmol À1 NNU-27 [96] 1.3 10 À3 (crystal, 2-probe) N.R. N.R.…”

New OLEDs Based on Zirconium Metal‐Organic Framework

“…On the other hand, the encapsulation of the redox active molecule, 7,7,8,8‐tetracyanoquinododimethane, into HKUST‐1 MOF enhances the charge carrier mobility . Although some electrical conductive MOFs have been reported, only few of them exhibit electroluminescence . To the best of our knowledge, there are only two electroluminescent MOFs (NNU‐27 = [ZnNa 2 (L) 2 (DEF) 2 ]·DEF and (Sr(ntca)(H 2 O) 2 ·H 2 O) which have been employed to fabricate orange–red and white–light electroluminescent devices, respectively .…”

“…Although some electrical conductive MOFs have been reported, only few of them exhibit electroluminescence . To the best of our knowledge, there are only two electroluminescent MOFs (NNU‐27 = [ZnNa 2 (L) 2 (DEF) 2 ]·DEF and (Sr(ntca)(H 2 O) 2 ·H 2 O) which have been employed to fabricate orange–red and white–light electroluminescent devices, respectively . The electroluminescence of NNU‐27 MOF mainly arises from electromers of the anthracene linkers, while that of the Sr‐MOF involves both the Sr‐cluster and the naphthalenetetracarboxylate linkers.…”

Syntheses, Structures, and Luminescence of Metal(II) Coordination Polymers based on Flexible 1,1′-(1,4-Butanediyl)bis(imidazole) and Tetrachlorobenzene-1,4-dicarboxylate Ligands

“…Among the coordination complexes, d 10 metal complexes are of interest due to their high thermal stability and good photoluminescent and electroluminescent properties . Recently, much effort has focused on the design of fascinating coordination architectures with BDC derivatives (BDC = benzenedicarboxylate), due to their unique linking modes and the potential ligand‐metal reactions , .…”