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Develioglu A, Resines‐Urien E, Poloni R, Martín‐Pérez L, Costa JS, Burzurí E. Tunable Proton Conductivity and Color in a Nonporous Coordination Polymer via Lattice Accommodation to Small Molecules. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:e2102619. [PMID: 34658142 PMCID: PMC8596141 DOI: 10.1002/advs.202102619] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 07/28/2021] [Indexed: 06/13/2023]
Abstract
Nonporous coordination polymers (npCPs) able to accommodate molecules through internal lattice reorganization are uncommon materials with applications in sensing and selective gas adsorption. Proton conduction, extensively studied in the analogue metal-organic frameworks under high-humidity conditions, is however largely unexplored in spite of the opportunities provided by the particular sensitivity of npCPs to lattice perturbations. Here, AC admittance spectroscopy is used to unveil the mechanism behind charge transport in the nonporous 1·2CH3 CN. The conductance in the crystals is found to be of protonic origin. A vehicle mechanism is triggered by the dynamics of the weakly coupled acetonitrile molecules in the lattice that can be maintained by a combination of thermal cycles, even at low humidity levels. An analogue 1·pyrrole npCP is formed by in situ exchange of these weakly bound acetonitrile molecules by pyrrole. The color and conduction properties are determined by the molecules weakly bonded in the lattice. This is the first example of acetonitrile-mediated proton transport in an npCP showing distinct optical response to different molecules. These findings open the door to the design of switchable protonic conductors and capacitive sensors working at low humidity levels and with selectivity to different molecules.
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Affiliation(s)
| | | | | | | | | | - Enrique Burzurí
- IMDEA NanocienciaCampus de CantoblancoCalle Faraday 9Madrid28049Spain
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Niu X, Yu Y, Mu C, Xie X, Liu Y, Liu Z, Li L, Li G, Li J. High Proton Conduction in Two Highly Water-Stable Lanthanide Coordination Polymers from a Triazole Multicarboxylate Ligand. Inorg Chem 2021; 60:13242-13251. [PMID: 34436871 DOI: 10.1021/acs.inorgchem.1c01616] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Two lanthanide coordination polymers (CPs) {[Er(Hmtbd)(H2mtbd)(H2O)3]·2H2O}n (1) and [Yb(Hmtbd)(H2mtbd)(H2O)3]n (2) carrying an N-heterocyclic carboxylate ligand 5-(3-methylformate-1H-1,2,4-triazole-1-methyl)benzen-1,3-dicarboxylate (H3mtbd) were prepared under solvothermal conditions. The single-crystal X-ray diffraction data demonstrate that 1 and 2 are isostructural and display 1D chain structure. Alternating current (AC) impedance measurements illustrate that the highest proton conductivities of 1 and 2 can attain 5.09 × 10-3 and 3.09 × 10-3 S·cm-1 at 100 °C and 98% relative humidity (RH), respectively. The value of 1 exceeds those of most reported lanthanide-based crystalline materials and ranks second among the described Er-CPs under similar conditions, whereas the value for 2 is the highest proton conductivity among the previous Yb-CPs. Coupled with the structural analyses of the two CPs and H2O vapor adsorption, the calculated Ea values help to deduce their proton conductive mechanisms. Notably, the N-heterocyclic units (triazole), carboxyl, and hydrogen-bonding network all play key roles in the proton-transfer process. The prominent proton conductive abilities of both CPs show great promise as efficient proton conductors.
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Affiliation(s)
- Xiaoge Niu
- College of Chemistry and Green Catalysis Centre, Zhengzhou University, Zhengzhou 450001, Henan, P. R. China
| | - Yihong Yu
- College of Chemistry and Green Catalysis Centre, Zhengzhou University, Zhengzhou 450001, Henan, P. R. China
| | - Chenyu Mu
- College of Chemistry and Green Catalysis Centre, Zhengzhou University, Zhengzhou 450001, Henan, P. R. China
| | - Xiaoxin Xie
- College of Chemistry and Green Catalysis Centre, Zhengzhou University, Zhengzhou 450001, Henan, P. R. China
| | - Yan Liu
- College of Chemistry and Green Catalysis Centre, Zhengzhou University, Zhengzhou 450001, Henan, P. R. China
| | - Zhongyi Liu
- College of Chemistry and Green Catalysis Centre, Zhengzhou University, Zhengzhou 450001, Henan, P. R. China
| | - Linke Li
- College of Chemistry and Green Catalysis Centre, Zhengzhou University, Zhengzhou 450001, Henan, P. R. China
| | - Gang Li
- College of Chemistry and Green Catalysis Centre, Zhengzhou University, Zhengzhou 450001, Henan, P. R. China
| | - Jinpeng Li
- College of Chemistry and Green Catalysis Centre, Zhengzhou University, Zhengzhou 450001, Henan, P. R. China
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Feng L, Zeng TY, Hou HB, Zhou H, Tian J. Theoretical hydrogen bonding calculations and proton conduction for Eu(iii)-based metal-organic framework. RSC Adv 2021; 11:11495-11499. [PMID: 35423605 PMCID: PMC8698213 DOI: 10.1039/d1ra01528a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Accepted: 03/16/2021] [Indexed: 01/15/2023] Open
Abstract
A water-mediated proton-conducting Eu(iii)-MOF has been synthesized, which provides a stable proton transport channel that was confirmed by theoretical calculation. The investigation of proton conduction shows that the conductivity of Eu(iii)-MOF obtained at 353 K and 98% RH is 3.5 × 10-3 S cm-1, comparable to most of the Ln(iii)-MOF based proton conductors.
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Affiliation(s)
- Lu Feng
- School of Resource and Environmental Science, Wuhan University Wuhan 430072 Hubei China
| | - Tian-Yu Zeng
- School of Resource and Environmental Science, Wuhan University Wuhan 430072 Hubei China
| | - Hao-Bo Hou
- School of Resource and Environmental Science, Wuhan University Wuhan 430072 Hubei China
| | - Hong Zhou
- College of Chemistry and Environmental Technology, Wuhan Institute of Technology Wuhan 430073 Hubei China
| | - Jian Tian
- Hangzhou Yanqu Information Technology Co., Ltd Y2, 2nd Floor, Building 2, Xixi Legu Creative Pioneering Park, No. 712 Wen er West Road, Xihu District Hangzhou City Zhejiang Province 310003 P. R. China
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Chu ZT, Li RY, Zhou CC, Liu HT, Lu J, Wang SN, Li YW. Two acidic coordination polymers containing uncoordinated carboxyl groups: Syntheses, crystal structures and proton conductivities in Nafion composite membranes. J SOLID STATE CHEM 2021. [DOI: 10.1016/j.jssc.2020.121932] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Huang Y, Zhou F, Feng J, Zhao H, Qi C, Ji J, Bao S, Zheng T. An ultra-stable hafnium phosphonate MOF platform for comparing the proton conductivity of various guest molecules/ions. Chem Commun (Camb) 2021; 57:1238-1241. [PMID: 33416822 DOI: 10.1039/d0cc07375j] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A porous hafnium-phosphonate MOF was synthesized using imidazole ionic liquids (ILs), namely PHOS-100(Hf), which has exceptional chemical stability in aqueous environments, even fuming acids. Its rigid framework with permanent porosity makes PHOS-100 an ideal candidate as a platform to fill with different functional guests such as acidic HCl, H2SO4, or H3PO4. The as-synthesized ILs@PHOS-100 exhibits significant humidity-dependent proton conductivities, increasing by four orders of magnitude from 45% RH to 95% RH at 25 °C. After post-treatment with strong acids, the acids@PHOS-100 show enhanced proton conduction at low relative humidities.
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Affiliation(s)
- Yan Huang
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Fan Zhou
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Jianshen Feng
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China.
| | - Hongxia Zhao
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Chao Qi
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Jinyan Ji
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Songsong Bao
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China.
| | - Tao Zheng
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China and Yangtze River Delta Research Institute, Northwestern Polytechnical University, Suzhou 215400, China.
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Liu H, Lu J, Liu Z, Wang S, Yan H, Tian H. Proton conducting behavior of a microporous metal-organic framework assisted by ligand isomerization. J SOLID STATE CHEM 2020. [DOI: 10.1016/j.jssc.2020.121570] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Liu H, Li R, Lu J, Liu Z, Wang S, Tian H. Proton conduction studies on four porous and nonporous coordination polymers with different acidities and water uptake. CrystEngComm 2020. [DOI: 10.1039/d0ce01197e] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Acidity and water absorption ability are important influencing factors on proton conducting behavior, which are determined by the protonation degree and amount of hydrophilic groups in the crystal structures, respectively.
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Affiliation(s)
- Houting Liu
- Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials
- School of Chemistry and Chemical Engineering
- Inner Mongolia University
- Hohhot 010021
- P.R. China
| | - Rongyun Li
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Cell Technology
- School of Chemistry and Chemical Engineering
- Liaocheng University
- Liaocheng 252059
- P. R. China
| | - Jing Lu
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Cell Technology
- School of Chemistry and Chemical Engineering
- Liaocheng University
- Liaocheng 252059
- P. R. China
| | - Zhiliang Liu
- Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials
- School of Chemistry and Chemical Engineering
- Inner Mongolia University
- Hohhot 010021
- P.R. China
| | - Suna Wang
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Cell Technology
- School of Chemistry and Chemical Engineering
- Liaocheng University
- Liaocheng 252059
- P. R. China
| | - Haiquan Tian
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Cell Technology
- School of Chemistry and Chemical Engineering
- Liaocheng University
- Liaocheng 252059
- P. R. China
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Feng L, Hou HB, Zhou H. UiO-66 derivatives and their composite membranes for effective proton conduction. Dalton Trans 2020; 49:17130-17139. [PMID: 33179664 DOI: 10.1039/d0dt03051a] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
As newly emerging proton-conducting materials, metal-organic frameworks (MOFs) have been attracting wide attention in the field of proton exchange membrane fuel cells. However, for most of the MOF materials, long-term stability is a huge obstacle for practical applications. So, the structural stability of MOFs is the critical prerequisite for the design and development of modified materials with excellent proton conductivity. In this review, stable UiO-66 derivatives were chosen as the research object, and modification methods including post-synthesis modification and hybridization were mainly summarized. Based on the reported typical functionalization strategies, we found that the modified UiO-66 derivatives and their composite membranes demonstrate ultra-high proton conductivity similar to that of commercial Nafion, indicating their great application potential in fuel cells. This Frontier article focuses on the recent development in the modification of UiO-66 type frameworks and their composite membranes and the tuning of proton conductivity with structural factors.
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Affiliation(s)
- Lu Feng
- School of Resource and Environmental Science, Wuhan University, Wuhan 430072, Hubei, China.
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