A dual-functional MOF for high proton conduction and sensitive detection of ascorbic acid

Abstract

A new metal-organic framework (MOF), [Eu2(HBDPP)2(H2O)2(DMF)2](H2O)2 (H4BDPP = 3,5-bis(3,5-dicarboxylphenyl) pyridine; DMF = N,N-dimethylformamide) (Eu-MOF), has been successfully synthesized under solvothermal condition. The 1D chain is formed by the adjacent Eu2(COO)24+...

A Series of Cobalt-Based Coordination Polymer Crystalline Materials as Highly Sensitive Electrochemical Sensors for Detecting Trace Cr(VI), Fe(III) Ions, and Ascorbic Acid

“…In recent years, coordination polymers (CPs) have received a great deal of attention in various fields, especially in the fields of energy and sensing. − The application of CPs was reported in some electrochemical sensors as an electrode surface modifier due to their ability to undergo reversible single-electron processes for sensing many analytes. CPs are mostly used for electrochemical sensing of anions, such as NO 2 – , BrO 3 – , etc. − Nevertheless, for the detection of cations, systematic research on CPs has still been rarely explored, and only a few reports have appeared in the pertinent literature dealing with the amperometric current detection method. , Therefore, as was mentioned, the development of electrochemical sensing materials for heavy-metal ions deserves a great effort.…”

High Protonic Conductivity of Three Highly Stable Nanoscale Hafnium(IV) Metal–Organic Frameworks and Their Imidazole-Loaded Products

“…For Im@1, beyond 500 °C (beyond 335 °C for Im@2 and 365 °C for Im@3), the framework began to combust. Considering that the melting point of the imidazole molecule is 91 °C, 53 which further testifies that the imidazole unit is encapsulated into the pore of 1−3 instead of staying on the surface. Last but not least, imidazole encapsulation does not affect the thermal stability of these MOFs.…”

Designable Guest‐Molecule Encapsulation in Metal–Organic Frameworks for Proton Conductivity

“…It is worth noting that the highest proton conductivity of the prepared composite material is three orders of magnitude higher than that of the initial MOF. In 2020, they synthesized another new MOF, [Eu 2 (HBDPP) 2 (H 2 O) 2 (DMF) 2 ](H 2 O) 2 (H 4 BDPP=3,5‐bis(3,5‐dicarboxylphenyl)pyridine; DMF= N , N ‐dimethylformamide; Eu‐MOF) under solvothermal condition [29] . The introduction of H 4 BDPP ligands containing polycarboxylic acid functional groups is beneficial to improve the acidity and hydrophilicity of Eu‐MOF and form an effective pathway to transfer protons.…”

“…Deposition Numbers CCDC2039554 (for Zr-TCPBP [10] ), 1564881 (for BUT-8 [12] ), 1911731 (for Ni-MOF [Ni 2 (H 4 L)(H 2 O) 9 (C 2 H 7 SO)(C 2 H 7 NCO)] [13] ), 605510 (for MIL-101 [14,16,22] ), 2041165 (for PHOS-100 [15] ), 881244 (for [Cu-(bpdc)(H 2 O) 2 ] n [19] ), 881245 (for {H[Cu(Hbpdc)(H 2 O) 2 ] 2 [PMo 12 O 40 ]•nH 2 O} n [19] ), 881246 (for {H[Cu(Hbpdc)(H 2 O) 2 ] 2 [PW 12 O 40 ]•nH 2 O} n [19] ), 1562195 (for NENU-3 [21] ), 1993021 (for MOF-217 [26] ), 1908861 (for [Eu 2 (HBDPP) 2 (H 2 O) 2 (DMF) 2 ](H 2 O) 2 [29] ), 1002678 (for MOF-801 [30] ), 1585550 (for VNU-23 [31] ) and 1810933 (for His 8.2 �VNU-23 [31] ), 1405751 (for UiO-66-NH 2 [32] ), 1013322 (for PCN-777 [35] ), 902900 (for DUT-68 [36] ), 1885639 (for FJU-10 [41] ), 1013734 (for UPG-1 [42] ) contain the supplementary crystallographic data for this paper. These data are provided free of charge by the joint Cambridge Crystallographic Data Centre and Fachinformationszentrum Karlsruhe Access Structures service.…”

“…In 2020, they synthesized another new MOF, [Eu 2 (HBDPP) 2 (H 2 O) 2 (DMF) 2 ](H 2 O) 2 (H 4 BDPP = 3,5-bis(3,5-dicarboxylphenyl)pyridine; DMF = N,Ndimethylformamide; Eu-MOF) under solvothermal condition. [29] The introduction of H 4 BDPP ligands containing polycarboxylic acid functional groups is beneficial to improve the acidity and hydrophilicity of Eu-MOF and form an effective pathway to transfer protons. The Eu-MOF reached the highest proton conductivity value up to 5.70 × 10 À 5 S cm À 1 at 338 K and 98 % RH.…”