Proton-Conduction Under Mild Humid Conditions in [Nh4][M(Hcoo)3] (M=Mn2+, Co2+) Frameworks DOI
L. Righi, Mauro Riccò, M. Solzi

et al.

Published: Jan. 1, 2024

We report the room temperature proton conduction property for ammonium-based formate frameworks [NH4][M(HCOO)3] (M=Mn2+, Co2+) well known their ferroelectric and magnetic properties at low temperature. The synthesis was afforded through mechanosynthesis measurements were performed in ambient as humidity controlled conditions. is activated by reaching relative (RH) limit of 50% both compounds. At 303 K maximal conductivity 2.9 ± 0.3 x 10-4 S/cm observed [NH4][Mn(HCOO)3] RH=70%. lack behavior isostructural compound Cs[Mn(HCOO)3] corroborates role played NH4+ units vehicle.

Language: Английский

Comparative Analysis of Proton Conductivity in Two Zn-Based MOFs Featuring Sulfate and Sulfonate Functional Groups DOI
Yuanyuan Guo, Rui-Dong Wang,

Wei‐Ming Wei

et al.

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(8), P. 3870 - 3881

Published: Feb. 15, 2024

Metal-organic frameworks (MOFs) have shown promising potential as proton-conducting materials due to their tunable structures and high porosity. In this study, two novel MOFs had been successfully synthesized, one containing sulfate groups (MOF-

Language: Английский

Citations

11
Enhanced Proton Conduction in Metal–Organic Frameworks through Single-Crystal to Single-Crystal Transformation DOI

Cai‐Xia Yu,

Hao Wu, Zhichao Shao

et al.

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 13, 2025

In this work, an anionic framework Co-MOF (1) was elaborately constructed, which underwent single-crystal-to-single-crystal (SC-SC) transformation to produce 1-Cr and 1-Fe after immersion in a CrCl3 or FeCl3 solution. Despite the similar crystal structure, significantly enhanced proton conductivities of far exceed that 1 at all humidity temperature conditions. Even 30 °C 98% RH, conductivity can reach up high values 1.49 × 10–2 6.39 10–3 S cm–1, respectively, surpassing by over 5000 times under identical The partial alteration proton-conducting carriers from metal-water cluster [Co(H2O)6]·6H2O] metal-hydroxyl-water clusters [Cr(OH)4(H2O)2]·6H2O] (1-Cr) [Fe(OH)4(H2O)2]·6H2O] (1-Fe) be attributed for above-mentioned performance. introduction hydroxyl SC-SC establish interconnected conduction pathways within channels, greatly facilitate conduction, affording much lower activation energies (0.12 eV 1-Cr, 0.18 1-Fe, 0.28 1). This research demonstrated not only achieved improved but also contributed deeper understanding structure–property relationships, providing new insights into design advanced materials with conductivity.

Language: Английский

Citations

0
Dual Free Radical Synergism for Enhancing Proton Conductivity in Photochromism iHOFs DOI Creative Commons
Cheng Liu,

Xuyong Chen,

Xiao‐Jie Cao

et al.

Precision Chemistry, Journal Year: 2025, Volume and Issue: 3(4), P. 221 - 230

Published: Feb. 20, 2025

Stimuli-responsive smart materials, as an emerging material, can fulfill reversible transformation of chemical/physical properties under external stimuli such mechanical stress, light, and electricity, which has the highlights rapid response, designable structure, function. Two ionic hydrogen-bonded organic frameworks (iHOFs 36-37) were synthesized by self-assembly bis(benzene-o/p-sulfonic acid)-naphthalenediimide (o/p-H2BSNDI) two basic ligands. The naphthalenediimide (NDI) was introduced into material to equip iHOFs 36-37 with radical-driven photochromic behavior. proton conductivity iHOF-37 demonstrated a maximum 6.50 × 10-4 S·cm-1 at 98% RH 100 °C, it increased 9.10 10-3 due dual free radical synergism following UV irradiation (NDI viologen), represents significant 14-fold enhancement. Furthermore, incorporation chitosan (CS) matrix forms composite membranes. 5%-iHOF-37/CS membrane reached up 5.70 10-2 90 8.08 after irradiation. This work reveals radicals generated NDI viologen derivatives, whose synergistic action plays role in enhancing membranes, rendering rational design stimuli-responsive materials feasible.

Language: Английский

Citations

0
Photochromic Ln-Phosphonates Assembled by an Imidazole Derivative: Construction, Crystal Structures, and Light-Enhanced Proton Conductivity DOI

Chen Jia,

Shuai Liang,

Yu-Xuan Wen

et al.

Crystal Growth & Design, Journal Year: 2024, Volume and Issue: 24(5), P. 2202 - 2209

Published: Feb. 23, 2024

A series of Ln(III)-based coordination compounds with one-dimensional chains have been synthesized by assembling organic phosphonate ligands hydroxyethylidene diphosphonate (HEDP) and the imidazole derivative 2,4,5-tris(4-pyridyl)-imidazole (TPI) lanthanide ions under solvothermal conditions. Based on electron-donor/-acceptor property, isomorphic exhibit radical-actuated photochromic behavior induced electron transfer process light illumination at room temperature. In addition, taking advantage abundant hydrogen-bond interactions in structures, display significant proton conduction temperature range 303–343 K 100% relative humidity. Importantly, conductivities all increase about compared to initial state after irradiation. As a result, this work shows new hybrid complexes photomodulated characteristics, providing method for design intelligent multifunctional materials diverse photochromism tunable conduction.

Language: Английский

Citations

3
Two Proton Conductive Coordination Polymers Constructed by an Unprecedented Structural Transformation of a Phosphine-Based Tricarboxylate Ligand DOI

Haotian Cui,

Jia-Yi Zhou,

Jinfen Chen

et al.

Crystal Growth & Design, Journal Year: 2023, Volume and Issue: 23(7), P. 4903 - 4911

Published: May 31, 2023

The phosphine-based tricarboxylate 2-(3,3′-dioxo-1λ5-1,1′-(3H,3′H)-spirobi[2,1-benzoxaphosphol]-1-yl)benzoic acid (L) has been intensely studied due to its unique configuration and readily oxidizable phosphorus center. However, the coordination of L with metals have largely ignored in field polymers (CPs). Herein, we report two CPs, [Zn3(L1)2(dib)2(H2O)]·9H2O (1) [Cu3(L2)2(dib)2]·3H2O (2) (H3L1 = tris(2-carboxyphenyl)phosphine oxide, H3L2 2,2′-phosphinico-dibenzoic acid, dib 1,4-di(1H-imidazol-1-yl)butane), synthesized based on L. Strikingly, despite initial use L, structures 1 2 reveal that undergoes unprecedented situ structural changes after metal ion. In 1, is transformed phosphine oxide derivative L1, while 2, it phosphinic L2. With aid flexible ligand dib, one-dimensional (1D) chain structure three-dimensional (3D) supramolecular were constructed. For especially there are abundant hydrogen bonds between framework lattice water molecules, which conducive formation excellent hydrophilic channels transport protons. Electrochemical experimental results show exhibit high proton conductivities (σ) more than 10–4 S cm–1 over a wide temperature range 303–353 K low activation energies (Ea) at 98% relative humidity. Compared σ value (3.12 × 10–5 cm–1), best values improved by 28 times 6 times, respectively, Ea also reduced from 0.39 0.13 eV for 0.12 2. This first proton-conducting carboxylate ligand, involving transitions ligand.

Language: Английский

Citations

4
A Comparative Study of Nickel and Cadmium Coordination Polymers: Framework Topology and Proton Conductivity DOI

Jhen‐Yi Lee,

His-Yuan Hsieh,

Yao-Ming Tang

et al.

Journal of Solid State Chemistry, Journal Year: 2024, Volume and Issue: 337, P. 124791 - 124791

Published: June 1, 2024

Language: Английский

Citations

1
Proton-conduction under mild humid conditions in [NH4][M(HCOO)3] (M=Mn2+, Co2+) frameworks DOI
Valentina Vit, Silvio Scaravonati, F. Cugini

et al.

Journal of Solid State Chemistry, Journal Year: 2024, Volume and Issue: 338, P. 124911 - 124911

Published: July 20, 2024

Language: Английский

Citations

1
Proton-Conduction Under Mild Humid Conditions in [Nh4][M(Hcoo)3] (M=Mn2+, Co2+) Frameworks DOI
L. Righi, Mauro Riccò, M. Solzi

et al.

Published: Jan. 1, 2024

We report the room temperature proton conduction property for ammonium-based formate frameworks [NH4][M(HCOO)3] (M=Mn2+, Co2+) well known their ferroelectric and magnetic properties at low temperature. The synthesis was afforded through mechanosynthesis measurements were performed in ambient as humidity controlled conditions. is activated by reaching relative (RH) limit of 50% both compounds. At 303 K maximal conductivity 2.9 ± 0.3 x 10-4 S/cm observed [NH4][Mn(HCOO)3] RH=70%. lack behavior isostructural compound Cs[Mn(HCOO)3] corroborates role played NH4+ units vehicle.

Language: Английский

Citations

0