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Wang ST, Liu XY, Li QH, Fang WH, Zhang J, Chen SM. Aluminum Molecular Ring Meets Deep Eutectic Solvents: Adaptive Assembly and Optical Behavior. Inorg Chem 2024; 63:12100-12108. [PMID: 38896443 DOI: 10.1021/acs.inorgchem.4c01090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2024]
Abstract
Different from the previous neutral reaction solvent system, this work explores the synthesis of Al-oxo rings in ionic environments. Deep eutectic solvents (DESs) formed by quaternary ammonium salts hydrogen bond acceptor (HBA) and phenols hydrogen bond donor (HBD) further reduce the melting point of the reaction system and provide an ionic environment. Further, the quaternary ammonium salt was chosen as the HBA because it contains a halogen anion that matches the size of the central cavity of the molecular ring. Based on this thought, five Al8 ion pair cocrystals were synthesized via "DES thermal". The general formula is Q+ ⊂ {Cl@[Al8(BD)8(μ2-OH)4L12]} (AlOC-180-AlOC-185, Q+ = tetrabutylammonium, tetrapropylammonium, 1-butyl-3-methylimidazole; HBD = phenol, p-chlorophenol, p-fluorophenol; HL = benzoic acid, 1-naphthoic acid, 1-pyrenecarboxylic acid, anthracene-9-carboxylic acid). Structural studies reveal that the phenol-coordinated Al molecular ring and the quaternary ammonium ion pair form the cocrystal compounds. The halogen anions in the DES component are confined in the center of the molecular ring, and the quaternary ammonium cations are located in the organic shell. Such an adaptive cocrystal binding pattern is particularly evident in the structures coordinated with low-symmetry ligands such as naphthoic acid and pyrene acid. Finally, the optical behavior of these cocrystal compounds is understood from the analysis of crystal structure and theoretical calculation.
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Affiliation(s)
- San-Tai Wang
- College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, China
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
- Fujian College, University of Chinese Academy of Sciences, No.155 Yangqiao West Road, Fuzhou, Fujian 350002, China
| | - Xi-Yan Liu
- College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, China
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
- Fujian College, University of Chinese Academy of Sciences, No.155 Yangqiao West Road, Fuzhou, Fujian 350002, China
| | - Qiao-Hong Li
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
- Fujian College, University of Chinese Academy of Sciences, No.155 Yangqiao West Road, Fuzhou, Fujian 350002, China
| | - Wei-Hui Fang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
- Fujian College, University of Chinese Academy of Sciences, No.155 Yangqiao West Road, Fuzhou, Fujian 350002, China
| | - Jian Zhang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
- Fujian College, University of Chinese Academy of Sciences, No.155 Yangqiao West Road, Fuzhou, Fujian 350002, China
| | - Shu-Mei Chen
- College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, China
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Cong YC, Xiao HP, Cai PW, Sun C, Sun YQ, Qi MQ, Li XX, Zheng ST. An Organodiphosphate-Containing Polyoxoniobate Ring and Its Assembly into a Three-Dimensional Framework through Hydrogen Bonding. Inorg Chem 2024; 63:9204-9211. [PMID: 38701353 DOI: 10.1021/acs.inorgchem.4c00741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/05/2024]
Abstract
In this work, a novel organodiphosphate-containing inorganic-organic hybrid polyoxoniobate (PONb) ring {(PO3CH2CH2PO3H)4Nb8O16}4- (Nb8P8) has been achieved by a one-pot hydrothermal method. The ring is constructed from a tetragonal {Nb8O36} motif and four {PO3CH2CH2PO3H} ligands. Interestingly, Nb8P8 can be joined together via K-H2O clusters {K2(H2O)4(OH)2} to form one-dimensional chains {[K2(H2O)4(OH)2]Nb8P8}n and further linked by {Cu(en)2}2+ (en = ethylenediamine) complexes, resulting in a three-dimensional supramolecular framework {[Cu(en)2]2[K2(H2O)4(OH)2]Nb8P8}·3en·H2O (1). 1 exhibits good chemical and thermal stability and has a high water vapor adsorption capacity of ≤224 cm3 g-1 (22.71 mol·mol-1) at 298 K, outperforming most of the known polyoxometalate-based materials. Impedance measurements prove that 1 can transfer protons with moderate conductivity. This study not only contributes to the structural diversity of organodiphosphate-containing PONbs and PONb rings but also provides a reference for the development of PONb-based materials with unique performance.
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Affiliation(s)
- Yu-Chen Cong
- Fujian Provincial Key Laboratory of Advanced Inorganic Oxygenated Materials, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, China
| | - Hui-Ping Xiao
- Fujian Provincial Key Laboratory of Advanced Inorganic Oxygenated Materials, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, China
| | - Ping-Wei Cai
- Fujian Provincial Key Laboratory of Advanced Inorganic Oxygenated Materials, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, China
| | - Cai Sun
- Fujian Provincial Key Laboratory of Advanced Inorganic Oxygenated Materials, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, China
| | - Yan-Qiong Sun
- Fujian Provincial Key Laboratory of Advanced Inorganic Oxygenated Materials, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, China
| | - Ming-Qiang Qi
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Xin-Xiong Li
- Fujian Provincial Key Laboratory of Advanced Inorganic Oxygenated Materials, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, China
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Nankai University, Tianjin 300071, China
| | - Shou-Tian Zheng
- Fujian Provincial Key Laboratory of Advanced Inorganic Oxygenated Materials, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, China
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Afzal J, Zhang J, Wang H. Fabrication of -SO 3H-functionalized polyphosphazene-reinforced proton conductive matrix-mixed membranes. RSC Adv 2024; 14:14456-14464. [PMID: 38699689 PMCID: PMC11063683 DOI: 10.1039/d3ra07094h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 04/11/2024] [Indexed: 05/05/2024] Open
Abstract
Proton exchange membranes (PEMs) have emerged as very promising membranes for automotive applications because of their notable proton conductivity at low temperatures. These membranes find extensive utilization in fuel cells. Several polymeric materials have been used, but their application is constrained by their expense and intricate synthetic processes. Affordable and efficient synthetic methods for polymeric materials are necessary for the widespread commercial use of PEM technology. The polymeric combination of hexachlorocyclotriphosphazene (HCCP) and 4,4-diamino-2,2-biphenyldisulfonic acid facilitated the synthesis of PP-(PhSO3H)2, a polyphosphazene with built-in -SO3H moieties. Characterization revealed that it was a porous organic polymer with high stability. PP-(PhSO3H)2 exhibited a proton conductivity of up to 8.24 × 10-2 S cm-1 (SD = ±0.031) at 353 K under 98% relative humidity (RH), which was more than two orders of magnitude higher than that of its -SO3H-free analogue, PP-(Ph)2 (2.32 × 10-4 S cm-1) (SD = ±0.019) under identical conditions. Therefore, for application in a PEM fuel cell, PP-(PhSO3H)2-based matrix-mixed membranes (PP-(PhSO3H)2-MMMs) were fabricated by mixing them with polyacrylonitrile (PAN) in various ratios. The proton conductivity could reach up to 6.11 × 10-2 S cm-1 (SD = ±0.0048) at 353 K and 98%RH, when the weight ratio of PP-(PhSO3H)2 : PAN was 3 : 1, the value of which was comparable with those of commercially available electrolytes used in PEM fuel cells. PP-(PhSO3H)2-MMM (3 : 1) had an extended lifetime of reusability. Using phosphazene and bisulfonated multiple-amine modules as precursors, we demonstrated that a porous organic polymer with a highly effective proton-conductive matrix-mixed membrane for PEM fuel cells could be produced readily by an intuitive polymeric reaction.
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Affiliation(s)
- Jamal Afzal
- Department of Mechanical and Energy Engineering, Key Laboratory of Energy Conversion and Storage Technologies, Southern University of Science and Technology Shenzhen 518055 China
| | - Jiashun Zhang
- Department of Mechanical and Energy Engineering, Key Laboratory of Energy Conversion and Storage Technologies, Southern University of Science and Technology Shenzhen 518055 China
| | - Haijiang Wang
- Department of Mechanical and Energy Engineering, Key Laboratory of Energy Conversion and Storage Technologies, Southern University of Science and Technology Shenzhen 518055 China
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Meng MZ, Shi GD, Cheng LL, Chen YP, Zhang YF, Lin W. Two-dimensional correlation infrared spectroscopy study on vanadoborate anionic skeleton regulated by countercations. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 311:123992. [PMID: 38330758 DOI: 10.1016/j.saa.2024.123992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 01/15/2024] [Accepted: 01/31/2024] [Indexed: 02/10/2024]
Abstract
Two novel vanadoborate compounds, [Cu(en)2]3[Li(H2O)]4[Li(H2O)3]2[V12B18O50(OH)10(H2O)]2·33.5H2O (1) and (H2en)4[Li(H2O)]4[V12B18O55(OH)5(H2O)]·14H2O (2), were synthesized via hydrothermal synthesis under identical conditions except for temperature. Structural analysis revealed that although both contain [V12B18O60]n- cluster anion, the different countercations potentially lead to variations in the [V12B18O60]n- cluster anion skeletons. In compound 1, the V4+/V5+ ratio was 10:2; while in compound 2 the ratio was 11:1. It is speculated that different countercations may influence the valence states of cluster anions. In this study, quantum chemical calculations revealed that the aromaticity and activity of the two compounds were different, and two-dimensional correlation infrared spectroscopy (2D-COS-IR) under magnetic perturbation confirmed that distinct response peaks of functional group vibrations to the magnetic field due to the different V4+/V5+ ratios and aromaticity of the two compounds. An electrochemical analysis revealed that compound 2 exhibits higher electrocatalytic activity. The results of quantum chemical calculations are aligned not only with the changes in the 2D-COS-IR spectra but also with the conclusions obtained from experiments on electrochemical properties. Overall, this work proposes a novel strategy for interpreting the alteration of vanadoborate anionic skeleton due to the introduction of different countercations by combining 2D-COS-IR with quantum chemical calculations.
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Affiliation(s)
- Ming-Ze Meng
- College of Chemistry, Fuzhou University, Fuzhou 350002, Fujian, China
| | - Gui-Dong Shi
- College of Chemistry, Fuzhou University, Fuzhou 350002, Fujian, China
| | - Ling-Ling Cheng
- College of Chemistry, Fuzhou University, Fuzhou 350002, Fujian, China
| | - Yi-Ping Chen
- College of Chemistry, Fuzhou University, Fuzhou 350002, Fujian, China; State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China.
| | - Yong-Fan Zhang
- College of Chemistry, Fuzhou University, Fuzhou 350002, Fujian, China
| | - Wei Lin
- College of Chemistry, Fuzhou University, Fuzhou 350002, Fujian, China.
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Li B, Lan Y, Su H, Xu J, Zhao Q, Ma Y, Zheng Q, Xuan W. {Mo 4}-directed structural evolution of highly reduced molybdenum red clusters for efficient proton conduction. Dalton Trans 2024; 53:6184-6189. [PMID: 38511430 DOI: 10.1039/d4dt00187g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/22/2024]
Abstract
A series of highly reduced Mo red clusters {Mo28} (1), {Mo30} (2), and {Mo40} (3) are synthesized from the rational assembly of planar {MoV4} building blocks and employed for proton conduction. 3 exhibits the best conductivity of 7.56 × 10-3 S cm-1 under optimal conditions due to the most efficient hydrogen-bonding network.
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Affiliation(s)
- Bingbing Li
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials & College of Chemistry and Chemical Engineering, Donghua University, Shanghai 201620, P R China.
| | - Yuxin Lan
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials & College of Chemistry and Chemical Engineering, Donghua University, Shanghai 201620, P R China.
| | - Heyang Su
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials & College of Chemistry and Chemical Engineering, Donghua University, Shanghai 201620, P R China.
| | - Jiaxin Xu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials & College of Chemistry and Chemical Engineering, Donghua University, Shanghai 201620, P R China.
| | - Qixin Zhao
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials & College of Chemistry and Chemical Engineering, Donghua University, Shanghai 201620, P R China.
| | - Yubin Ma
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials & College of Chemistry and Chemical Engineering, Donghua University, Shanghai 201620, P R China.
| | - Qi Zheng
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials & College of Materials Science and Engineering, Donghua University, Shanghai 201620, P R China.
| | - Weimin Xuan
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials & College of Chemistry and Chemical Engineering, Donghua University, Shanghai 201620, P R China.
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Sun Y, Zou Y, Li H, Chen W, Ma P, Niu J, Wang J. Controlled Assembly of a Dawson-like Antimoniotungstate-Supported Trefoil-type Trimer with Good Proton Conductivity Performance. Inorg Chem 2024; 63:2363-2369. [PMID: 38266165 DOI: 10.1021/acs.inorgchem.3c03191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2024]
Abstract
With the excellent properties of POM in the field of proton conductivity, the preparation of POM-based proton-conductive materials has burst into life. Herein, an unprecedented Sb-templated all-inorganic trimer Na8H18.64[(SbW14O52)3(Sb2W6.12Ru5.88O18)]·85H2O (1), which is based on tetravacant Dawson-like [SbW14O52]17- blocks and exhibits a trefoil type with D3 symmetry, has been successfully designed and synthesized by the assembly of simple materials with a one-pot hydrothermal method under acidic conditions. Also, compound 1 is systematically characterized by single-crystal X-ray diffraction, PXRD, ESI-MS, IR spectroscopy, UV-vis, elemental analysis, and TGA. Crystal structure data analysis demonstrates that compound 1 is constructed by a hexagonal prismatic heterometallic {Sb2W6.12Ru5.88O18} core and three equivalent {SbW14} units bridged through μ2-O atoms in periphery. Subsequently, further property experiments show that compound 1 exhibits high proton conductivity with a conductivity value (σ) of 3.07 × 10-2 S cm-1 at 75 °C and 80% relative humidity (RH). The activation energy of compound 1 evaluated by the Arrhenius plots is 0.22 eV, which indicates that the Grotthuss mechanism is dominant during the process of proton transfer.
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Affiliation(s)
- Yahao Sun
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Molecular Sciences, Henan University, Kaifeng, Henan 475004, P. R. China
| | - Yan Zou
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Molecular Sciences, Henan University, Kaifeng, Henan 475004, P. R. China
| | - Huafeng Li
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Molecular Sciences, Henan University, Kaifeng, Henan 475004, P. R. China
| | - Wenjing Chen
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Molecular Sciences, Henan University, Kaifeng, Henan 475004, P. R. China
| | - Pengtao Ma
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Molecular Sciences, Henan University, Kaifeng, Henan 475004, P. R. China
| | - Jingyang Niu
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Molecular Sciences, Henan University, Kaifeng, Henan 475004, P. R. China
| | - Jingping Wang
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Molecular Sciences, Henan University, Kaifeng, Henan 475004, P. R. China
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7
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Ren WB, Sun S, Gao Z, Li B, Chen X, Liu Q, Zang HY. Synthesis of Phosphovanadate-Based Porous Inorganic Frameworks with High Proton Conductivity. Inorg Chem 2023. [PMID: 37988635 DOI: 10.1021/acs.inorgchem.3c03703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2023]
Abstract
Materials with high proton conductivity have attracted significant attention for their wide-ranging applications in proton exchange membrane fuel cells. However, the design of new and efficient porous proton-conducting materials remains a challenging task. The structure-controllable and highly stable metal phosphates can be synthesized into layer or frame networks to provide proton transport capabilities. Herein, we have successfully synthesized three isomorphic metal phosphovanadates, namely, H2(C2H10N2)2[MII(H2O)2(VIVO)8(OH)4(PO4)4(HPO4)4] (C2H8N2 = 1,2-ethylenediamine; M = Co, Ni, and Cu), by the hydrothermal method employing ethylenediamine as a template. These pure inorganic open frameworks exhibit a cavity width ranging from 6.4 to 7.5 Å. Remarkably, the proton conductivity of compounds 1-3 can reach 1 × 10-2 S·cm-1 at 85 °C and 97% relative humidity (RH), and they can remain stable at high temperatures as well as long-term stability. This work provides a novel strategy for the development and design of porous proton-conducting materials.
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Affiliation(s)
- Wei-Bo Ren
- Faculty of Chemistry Changchun, Northeast Normal University Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education at Universities of Jilin Province, Jilin 130024, China
| | - Sai Sun
- Faculty of Chemistry Changchun, Northeast Normal University Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education at Universities of Jilin Province, Jilin 130024, China
| | - Zhixin Gao
- Faculty of Chemistry Changchun, Northeast Normal University Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education at Universities of Jilin Province, Jilin 130024, China
| | - Bo Li
- Faculty of Chemistry Changchun, Northeast Normal University Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education at Universities of Jilin Province, Jilin 130024, China
| | - Xinyu Chen
- Faculty of Chemistry Changchun, Northeast Normal University Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education at Universities of Jilin Province, Jilin 130024, China
| | - Qianqian Liu
- Faculty of Chemistry Changchun, Northeast Normal University Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education at Universities of Jilin Province, Jilin 130024, China
| | - Hong-Ying Zang
- Faculty of Chemistry Changchun, Northeast Normal University Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education at Universities of Jilin Province, Jilin 130024, China
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Nie SQ, Yuan YY, Zeng HM, Jiang ZG, Zhan CH. Homohelical Self-Assembly of Trimer of α-Cyclodextrin and Octamolybdate. Inorg Chem 2023; 62:19153-19158. [PMID: 37934703 DOI: 10.1021/acs.inorgchem.3c03687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2023]
Abstract
The ability to conceptually mimic biomolecules to construct emergency-functional homospiral aggregates remains a long-standing challenge. Herein, we report artificial homohelical assembly by blending inorganic polyoxometalates (POMs) and organic cyclodextrin molecules. The chiral double-helical chains have been achieved by a left-hand arrangement of trimer-trimer. The trimer is formed by three {Mo8}@α-CD inclusive complexes as a Whittaker-style paddle wheel. During the process of assembly, chiral transfer and amplification from molecule to superstructure were observed. The enantioselective adsorption of the homohelical aggregate toward (R/S)-1,1'-binaphthyl-2,2'-diamine was further demonstrated. The interaction of {Mo8} and α-CD in solution was investigated. This work opens a wide scope for the design of a homohelix, enriching POM-based inorganic-organic materials.
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Affiliation(s)
- Si-Qi Nie
- Key Laboratory of the Ministry of Education for Advanced Catalysis Material, Institute of Physical Chemistry, College of Chemistry and Materials Science, Zhejiang Normal University, Jinhua 321004, China
| | - Yun-Yue Yuan
- Key Laboratory of the Ministry of Education for Advanced Catalysis Material, Institute of Physical Chemistry, College of Chemistry and Materials Science, Zhejiang Normal University, Jinhua 321004, China
| | - Hui-Min Zeng
- Key Laboratory of the Ministry of Education for Advanced Catalysis Material, Institute of Physical Chemistry, College of Chemistry and Materials Science, Zhejiang Normal University, Jinhua 321004, China
| | - Zhan-Guo Jiang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Material, Institute of Physical Chemistry, College of Chemistry and Materials Science, Zhejiang Normal University, Jinhua 321004, China
| | - Cai-Hong Zhan
- Key Laboratory of the Ministry of Education for Advanced Catalysis Material, Institute of Physical Chemistry, College of Chemistry and Materials Science, Zhejiang Normal University, Jinhua 321004, China
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9
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Liu F, Lin J, Ji J, Na Y, Uchida S, Fang X. A Macrocyclic Polyoxomolybdate with Phosphate and Phosphonate Linkers: Synthesis, Structure, and Proton Conductivity. Inorg Chem 2023; 62:15340-15345. [PMID: 37695307 DOI: 10.1021/acs.inorgchem.3c02005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
Abstract
A coordination macrocycle composed of eight identical [PMo8O27]- ({PMo8}) clusters connected by both organic tetraphosphonates and inorganic phosphates, (C3N2H5)29(NH4)6H12[(PMo8O27)8(C10P4O12N2H20)4(PO4)4Cs(Mo4O10(H2O)4)] (C3N2H5+ = imidazolium), is presented here. The primary building block, {PMo8}, is a tetravacant Keggin-type phosphomolybdate that has never been observed before. The compound shows a high proton conductivity of 9.70 × 10-3 S cm-1 at 373 K and 98% relative humidity. Control experiments on an imidazolium-free sample demonstrate the critical role of the imidazolium counterions as mobile proton carriers. The contribution of imidazolium necessitates a high activation energy (Ea = 0.502 eV) for proton conduction via the vehicle mechanism.
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Affiliation(s)
- Fangcheng Liu
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Jiaheng Lin
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Jianming Ji
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Yong Na
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Sayaka Uchida
- Department of Basic Science, School of Arts and Sciences, The University of Tokyo, Tokyo 153-8902, Japan
| | - Xikui Fang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China
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10
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Sun Y, Li H, Zou Y, Ma P, Niu J, Wang J. A Hexameric Ruthenium(III)-Containing Tungstoantimonate with Good Proton Conductivity Performance. Inorg Chem 2023; 62:14142-14146. [PMID: 37603397 DOI: 10.1021/acs.inorgchem.3c01342] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/22/2023]
Abstract
A novel Ru(III)-containing tungstoantimonate Na16H22[(B-β-SbW9O33)6(W3RuO7)2(W4O11)]·118H2O (1) hexamer was successfully synthesized using the hydrothermal synthesis method. Analysis by single-crystal X-ray diffraction revealed that the polyanion comprises six trivacant Keggin-type [B-β-SbW9O33]9- units interconnected by six {WO6} and six Ru/W disorder octahedra, resulting in an intriguing cyclohexane boat-like conformation. Compound 1 exhibits favorable proton conductivity, with a measured conductivity (σ) of 5.41 × 10-3 S cm-1 at 333 K and 55% relative humidity (RH). The activation energy (Ea) of compound 1 was determined to be 0.40 eV, providing evidence that its proton conductivity conforms to the Grotthus mechanism.
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Affiliation(s)
- Yahao Sun
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, Henan, P. R. China
| | - Huafeng Li
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, Henan, P. R. China
| | - Yan Zou
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, Henan, P. R. China
| | - Pengtao Ma
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, Henan, P. R. China
| | - Jingyang Niu
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, Henan, P. R. China
| | - Jingping Wang
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, Henan, P. R. China
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Xie WL, Li XM, Lin JM, Dong LZ, Chen Y, Li N, Shi JW, Liu JJ, Liu J, Li SL, Lan YQ. Keeping Superprotonic Conductivity over a Wide Temperature Region via Sulfate Hopping Sites-Decorated Zirconium-Oxo Clusters. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2205444. [PMID: 36284496 DOI: 10.1002/smll.202205444] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Revised: 09/24/2022] [Indexed: 06/16/2023]
Abstract
Metal-oxo clusters have emerged as advanced proton conductors with well-defined and tunable structures. Nevertheless, the exploitation of metal-oxo clusters with high and stable proton conductivity over a relatively wide temperature range still remains a great challenge. Herein, three sulfate groups decorated zirconium-oxo clusters (Zr6 , Zr18 , and Zr70 ) as proton conductors are reported, which exhibit ultrahigh bulk proton conductivities of 1.71 × 10-1 , 2.01 × 10-2 , and 3.73 × 10-2 S cm-1 under 70 °C and 98% relative humidity (RH), respectively. Remarkably, Zr6 and Zr70 with multiple sulfate groups as proton hopping sites show ultralow activation energies of 0.22 and 0.18 eV, respectively, and stable bulk conductivities of >10-2 S cm-1 between 30 and 70 °C at 98% RH. Moreover, a time-dependent proton conductivity test reveals that the best performing Zr6 can maintain high proton conductivity up to 15 h with negligible loss at 70 °C and 98% RH, representing one of the best crystalline cluster-based proton conducting materials.
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Affiliation(s)
- Wei-Lian Xie
- Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials, Jiangsu Key Laboratory of New Power Batteries, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, P. R. China
| | - Xiao-Min Li
- School of Materials Science and Engineering, Institute of Functional Porous Materials, Zhejiang Sci-Tech University, Hangzhou, 310018, P. R. China
| | - Jiao-Min Lin
- School of Chemistry, South China Normal University, Guangzhou, 510006, P. R. China
| | - Long-Zhang Dong
- School of Chemistry, South China Normal University, Guangzhou, 510006, P. R. China
| | - Yu Chen
- School of Chemistry, South China Normal University, Guangzhou, 510006, P. R. China
| | - Ning Li
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, Guangdong, 510006, P. R. China
| | - Jing-Wen Shi
- Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials, Jiangsu Key Laboratory of New Power Batteries, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, P. R. China
| | - Jing-Jing Liu
- School of Chemistry, South China Normal University, Guangzhou, 510006, P. R. China
| | - Jiang Liu
- School of Chemistry, South China Normal University, Guangzhou, 510006, P. R. China
| | - Shun-Li Li
- School of Chemistry, South China Normal University, Guangzhou, 510006, P. R. China
| | - Ya-Qian Lan
- School of Chemistry, South China Normal University, Guangzhou, 510006, P. R. China
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Afzal J, Fu Y, Luan TX, Su Z, Li PZ. Highly Effective Proton-Conductive Matrix-Mixed Membrane Based on a -SO 3H-Functionalized Polyphosphazene. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:10503-10511. [PMID: 35976224 DOI: 10.1021/acs.langmuir.2c01273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
A polyphosphazene with in-built -SO3H moieties (PP-PhSO3H) was facilely synthesized by the polymeric combination of hexachlorocyclotriphosphazene (HCCP) and sulfonate p-phenylenediamine. Characterization reveals that it is a highly stable amorphous polymer. Proton conductivity investigations showed that the synthesized PP-PhSO3H exhibits a proton conductivity of up to 6.64 × 10-2 S cm-1 at 353 K and 98% relative humidity (RH). This value is almost 2 orders of magnitude higher than the corresponding value for its -SO3H-free analogue, PP-Ph, which is 1.72 × 10-4 S cm-1 when measured under the same condition. Consequently, matrix-mixed membranes (labeled PP-PhSO3H-PAN) were further prepared by mixing PP-PhSO3H with polyacrylonitrile (PAN) in different ratios to test its potential application in the proton-exchange membrane (PEM) fuel cell. The analysis results indicate that when the weight ratio of PP-PhSO3H/PAN is 3:1 [named PP-PhSO3H-PAN (3:1)], its proton conductivity can reach up to 5.05 × 10-2 S cm-1 at 353 K and 98% RH, which is even comparable with those of proton-conductive electrolytes currently used in PEM fuel cells. Furthermore, the continuous test demonstrates that the PP-PhSO3H-PAN (3:1) has long-life reusability. This research reveals that by using phosphazene and sulfonated multiple-amine modules as precursors, organic polymers with excellent proton conductivity for the assembly of matrix-mixed membranes in PEM fuel cells can be easily synthesized by a simple polymeric process.
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Affiliation(s)
- Jamal Afzal
- School of Chemistry and Chemical Engineering, Shandong University, No.27 Shanda South Road, Ji'nan 250100, Shandong Province, People's Republic of China
| | - Yaomei Fu
- Shandong Peninsula Engineering Research Center of Comprehensive Brine Utilization, Weifang University of Science and Technology, Shouguang 262700, Shandong Province, People's Republic of China
| | - Tian-Xiang Luan
- School of Chemistry and Chemical Engineering, Shandong University, No.27 Shanda South Road, Ji'nan 250100, Shandong Province, People's Republic of China
| | - Zhongmin Su
- Shandong Peninsula Engineering Research Center of Comprehensive Brine Utilization, Weifang University of Science and Technology, Shouguang 262700, Shandong Province, People's Republic of China
- School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun 130022, Jilin Province, People's Republic of China
| | - Pei-Zhou Li
- School of Chemistry and Chemical Engineering, Shandong University, No.27 Shanda South Road, Ji'nan 250100, Shandong Province, People's Republic of China
- Science Center for Material Creation and Energy Conversion, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao 266237, Shandong Province, People's Republic of China
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13
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Afzal J, Fu Y, Luan TX, Su Z, Li PZ. Highly Effective Proton-Conduction Matrix-Mixed Membrane Derived from an -SO3H Functionalized Polyamide. Molecules 2022; 27:molecules27134110. [PMID: 35807357 PMCID: PMC9268481 DOI: 10.3390/molecules27134110] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 06/09/2022] [Accepted: 06/23/2022] [Indexed: 01/27/2023] Open
Abstract
Developing a low-cost and effective proton-conductive electrolyte to meet the requirements of the large-scale manufacturing of proton exchange membrane (PEM) fuel cells is of great significance in progressing towards the upcoming “hydrogen economy” society. Herein, utilizing the one-pot acylation polymeric combination of acyl chloride and amine precursors, a polyamide with in-built -SO3H moieties (PA-PhSO3H) was facilely synthesized. Characterization shows that it possesses a porous feature and a high stability at the practical operating conditions of PEM fuel cells. Investigations of electrochemical impedance spectroscopy (EIS) measurements revealed that the fabricated PA-PhSO3H displays a proton conductivity of up to 8.85 × 10−2 S·cm−1 at 353 K under 98% relative humidity (RH), which is more than two orders of magnitude higher than that of its -SO3H-free analogue, PA-Ph (6.30 × 10−4 S·cm−1), under the same conditions. Therefore, matrix-mixed membranes were fabricated by mixing with polyacrylonitrile (PAN) in different ratios, and the EIS analyses revealed that its proton conductivity can reach up to 4.90 × 10−2 S·cm−1 at 353 K and a 98% relative humidity (RH) when the weight ratio of PA-PhSO3H:PAN is 3:1 (labeled as PA-PhSO3H-PAN (3:1)), the value of which is even comparable with those of commercial-available electrolytes being used in PEM fuel cells. Additionally, continuous tests showed that PA-PhSO3H-PAN (3:1) possesses a long-life reusability. This work demonstrates, using the simple acylation reaction with the sulfonated module as precursor, that low-cost and highly effective proton-conductive electrolytes for PEM fuel cells can be facilely achieved.
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Affiliation(s)
- Jamal Afzal
- School of Chemistry and Chemical Engineering, Shandong University, No. 27 Shanda South Road, Jinan 250100, China; (J.A.); (T.-X.L.)
| | - Yaomei Fu
- Shandong Peninsula Engineering Research Center of Comprehensive Brine Utilization, Weifang University of Science and Technology, Shouguang 262700, China; (Y.F.); (Z.S.)
| | - Tian-Xiang Luan
- School of Chemistry and Chemical Engineering, Shandong University, No. 27 Shanda South Road, Jinan 250100, China; (J.A.); (T.-X.L.)
| | - Zhongmin Su
- Shandong Peninsula Engineering Research Center of Comprehensive Brine Utilization, Weifang University of Science and Technology, Shouguang 262700, China; (Y.F.); (Z.S.)
- School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun 130022, China
| | - Pei-Zhou Li
- School of Chemistry and Chemical Engineering, Shandong University, No. 27 Shanda South Road, Jinan 250100, China; (J.A.); (T.-X.L.)
- Science Center for Material Creation and Energy Conversion, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao 266237, China
- Correspondence:
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