Structural defects in metal–organic frameworks (MOFs): Formation, detection and control towards practices of interests

Ren, Jianwei; Ledwaba, Mpho; Musyoka, Nicholas M.; Langmi, Henrietta W.; Mathe, Mkhulu; Liao, Shijun; Pang, Wan

doi:10.1016/j.ccr.2017.08.017

Cited by 220 publications

(140 citation statements)

References 206 publications

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“…As reported, COFs are designed to obtain an ideal crystal as perfect as possible, which are well‐aligned arrangements and structural regularities by connected the building blocks. Considering that defects in materials may open up a new concept for modulating structures and properties in some cases rather than bring negative effects, for example, defects have been introduced into MOFs structures for new functionalities and properties (e.g., ion motion, active sites for catalysis, photoluminescence, and fine‐tuning properties) to tailor MOFs. Therefore, it seems that rationally introducing defects into COFs may be a good strategy for broadening COFs functionalities and applications.…”

Section: Introductionmentioning

confidence: 99%

Defective 2D Covalent Organic Frameworks for Postfunctionalization

Liu

et al. 2020

Adv Funct Materials

113

103

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Defects are deliberately introduced into covalent organic frameworks (COFs) via a three‐component condensation strategy. The defective COFs (dCOF‐NH2‐Xs, X = 20, 40, and 60) possess favorable crystallinity and porosity, as well as have active amine functional groups as anchoring sites for further postfunctionalization. By introducing imidazolium functional groups onto the pore walls of COFs via the Schiff‐base reaction, dCOF‐ImBr‐Xs‐ and dCOF‐ImTFSI‐Xs‐based materials are employed as all‐solid‐state electrolytes for lithium‐ion conduction with a wide range of working temperatures (from 303 to 423 K), and the ion conductivity of dCOF‐ImTFSI‐60‐based electrolyte reaches 7.05 × 10−3 S cm−1 at 423 K. As far as it is known, it is the highest value for all polymeric crystalline porous material based all‐solid‐state electrolytes. Furthermore, Li/dCOF‐ImTFSI‐60@Li/LiFePO4 all‐solid Li‐ion battery displays satisfactory battery performance under 353 K. This work not only provides a new methodology to construct COFs with precisely controlled defects for postfunctionalization, but also makes them promising candidate materials as all‐solid‐state electrolytes for lithium‐ion batteries operate at high temperatures.

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Section: Introductionmentioning

confidence: 99%

Defective 2D Covalent Organic Frameworks for Postfunctionalization

Liu

et al. 2020

Adv Funct Materials

113

103

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“…19 It has been recently reported that the defect engineering of MOFs can be a promising approach for tailoring their physicochemical properties such as stability, magnetism, gas adsorption, and catalytic activity. [20][21][22][23][24][25] It is common to use the concepts of heterogeneity and structural disorders of different nature interchangeably with the term "structural defects". UiO-66 has been considered as a model system, when one deals with defective MOFs, and two types of defects have been proposed to exist in its framework: missing-linker defects and missingcluster defects.…”

Section: Introductionmentioning

confidence: 99%

Temperature modulation of defects in NH₂-UiO-66(Zr) for photocatalytic CO₂ reduction

et al. 2019

RSC Adv.

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“…Where conductivity is, however, desired for applications in electronic devices, the question of defects within the structures and their effects on electronic properties must be addressed; recently, the understanding and, indeed, optimization of defects within frameworks have been shown to have important implications for gas separation and adsorption [99]. A further critical issue identified by Dincȃ and co-workers is the variability in measurement methods for conductive frameworks that render comparisons between them challenging, sometimes presenting 2-3 orders of magnitude differences in the results [32].…”

Section: Future Outlook: Challenges and Opportunitiesmentioning

confidence: 99%

Prospects for electroactive and conducting framework materials

Murase

Ding

et al. 2019

Phil. Trans. R. Soc. A.

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Electroactive and conducting framework materials, encompassing coordination polymers and metal–organic frameworks, have captured the imagination of the scientific community owing to their highly designable nanoporous structures and their potential applications in electrochromic devices, electrocatalysts, porous conductors, batteries and solar energy harvesting systems, among many others. While they are now considered integral members of the broader field of inorganic materials, it is timely to reflect upon their strengths and challenges compared with ‘traditional’ solid-state materials such as minerals, pigments and zeolites. Indeed, the latter have been known since ancient times and have been prized for centuries in fields as diverse as art, archaeology and industrial catalysis. This opinion piece considers a brief historical perspective of traditional electroactive and conducting inorganic materials, with a view towards very recent experimental progress and new directions for future progress in the burgeoning area of coordination polymers and metal–organic frameworks. Overall, this article bears testament to the rich history of electroactive solids and looks at the challenges inspiring a new generation of scientists. This article is part of the theme issue ‘Mineralomimesis: natural and synthetic frameworks in science and technology’.

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Structural defects in metal–organic frameworks (MOFs): Formation, detection and control towards practices of interests

Cited by 220 publications

References 206 publications

Defective 2D Covalent Organic Frameworks for Postfunctionalization

Defective 2D Covalent Organic Frameworks for Postfunctionalization

Temperature modulation of defects in NH₂-UiO-66(Zr) for photocatalytic CO₂ reduction

Prospects for electroactive and conducting framework materials

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Structural defects in metal–organic frameworks (MOFs): Formation, detection and control towards practices of interests

Cited by 220 publications

References 206 publications

Defective 2D Covalent Organic Frameworks for Postfunctionalization

Defective 2D Covalent Organic Frameworks for Postfunctionalization

Temperature modulation of defects in NH2-UiO-66(Zr) for photocatalytic CO2 reduction

Prospects for electroactive and conducting framework materials

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Temperature modulation of defects in NH₂-UiO-66(Zr) for photocatalytic CO₂ reduction