Design and syntheses of hybrid zeolitic imidazolate frameworks

Han, Yupeng; Wang, Fei; Zhang, Jian

doi:10.1016/j.ccr.2022.214759

Cited by 23 publications

(12 citation statements)

References 114 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is challenging to liquefy metal–organic frameworks (MOFs) because these materials typically decompose upon heating, even in an inert atmosphere, before they melt. − However, the liquid state of MOFs is of highest interest, as it allows molding and shaping of these functional porous materials and the generation of MOF glasses by quenching the MOF melt below its glass transition temperature ( T g ). , MOF glasses have been classified as the 4th generation of MOFs as they possess the potential to address some of the key challenges in materials development for applications in gas separation, solid electrolytes, battery materials, and many more. − However, out of the enormous number of crystalline MOF structures reported so far, only a very few derivatives have been shown to melt and form a porous glass after melt-quenching. Among these are some derivatives of the subfamily of zeolitic imidazolate frameworks (ZIFs). ,,− ZIFs typically are crystalline materials constructed from M 2+ cations (e.g., Zn 2+ or Co 2+ ), which are tetrahedrally coordinated by imidazolate-type linkers, forming network topologies similar to zeolites and silicates. − The rather high thermal stability of some ZIFs, predominantly a consequence of the relatively high thermal stability of imidazolate-type linkers, is a key feature for accessing their liquid and glassy states.…”

Section: Introductionmentioning

confidence: 99%

Modulating Liquid–Liquid Transitions and Glass Formation in Zeolitic Imidazolate Frameworks by Decoration with Electron-Withdrawing Cyano Groups

et al. 2023

View full text Add to dashboard Cite

The liquid phase of metal–organic frameworks (MOFs) is key for the preparation of melt-quenched bulk glasses as well as the shaping of these materials for various applications; however, only very few MOFs can be melted and transformed into stable glasses. Here, the solvothermal and mechanochemical preparation of a new series of functionalized derivatives of ZIF-4 (Zn(im)2, where im– = imidazolate and ZIF = zeolitic imidazolate framework) containing the cyano-functionalized imidazolate linkers CNim– (4-cynanoimidazolate) and dCNim– (4,5-dicyanoimidazolate) is reported. The strongly electron-withdrawing nature of the CN groups facilitates low-temperature melting of the materials (below 310 °C for some derivatives) and the formation of microporous ZIF glasses with remarkably low glass-transition temperatures (down to only about 250 °C) and strong resistance against recrystallization. Besides conventional ZIF-4, the CN-functionalized ZIFs are so far the only MOFs to show an exothermic framework collapse to a low-density liquid phase and a subsequent transition to a high-density liquid phase. By systematic adjustment of the fraction of cyano-functionalized linkers in the ZIFs, we derive fundamental insights into the thermodynamics of the unique polyamorphic nature of these glass formers as well as further design rules for the porosity of the ZIF glasses and the viscosity of their corresponding liquids. The results provide new insights into the unusual phenomenon of liquid–liquid transitions as well as a guide for the chemical diversification of meltable MOFs, likely with implications beyond the archetypal ZIF glass formers.

show abstract

Section: Introductionmentioning

confidence: 99%

Modulating Liquid–Liquid Transitions and Glass Formation in Zeolitic Imidazolate Frameworks by Decoration with Electron-Withdrawing Cyano Groups

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Coordination polymers, including metal-organic frameworks, are a class of porous crystalline materials formed by inorganic metal ions or clusters and functionadjustable organic ligands through directed selfassembly. [22][23][24][25][26][27][28] The peculiarities of inorganic-organic, crystalline, porous, structural tunable, and functionadjustable properties for CPs make them excellent candidates for applications including gas storage and separation and magnetic, electrochemical, catalysis, biomedicine, and chemical sensing properties. [29][30][31][32][33][34][35][36][37] Luminescent TM-CPs have attracted increasing attention for sensing environmental pollutants owing to their superior performance.…”

Section: Introductionmentioning

confidence: 99%

Three multi-responsive luminescent Zn-CPs for the detection of antibiotics/cations/anions in aqueous media

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Boron imidazolate frameworks (BIFs) could be considered as expanded structural analogs of zeolite-like MOFs (Figure a), by simulating the structural characteristics of inorganic zeolite. Zeolite networks are composed of TO 4 tetrahedral units (with T = Si, Al) sharing oxygen corners, with an average T-O-T bond angle of ∼145 deg. , As for BIFs, we replaced the O atoms in the inorganic zeolite structure with the imidazole ligand and replaced the T nodes with tetrahedral metals/clusters (Tu m+ ) and B 3+ , constructing the AlPO 4 -like zeolitic topology (Figure b) . BIFs are distinct from the zeolite imidazolate frameworks (ZIFs), which are constructed by linking tetrahedral divalent cations (M 2+ = Zn 2+ or Co 2+ ) with negative imidazolate ligands (im) − . − BIFs can be synthesized in a two-step synthetic strategy utilizing presynthesized four-connected tetrahedral B(im) 4 – ligands or three-connected tripodal BH(im) 3 – ligands to fix the B 3+ on one side of imidazolate ring (Figure c).…”

Section: Introductionmentioning

confidence: 99%

“…1,2 As for BIFs, we replaced the O atoms in the inorganic zeolite structure with the imidazole ligand and replaced the T nodes with tetrahedral metals/ clusters (Tu m+ ) and B 3+ , constructing the AlPO 4 -like zeolitic topology (Figure 1b). 3 BIFs are distinct from the zeolite imidazolate frameworks (ZIFs), which are constructed by linking tetrahedral divalent cations (M 2+ = Zn 2+ or Co 2+ ) with negative imidazolate ligands (im) − . 4−6 BIFs can be synthesized in a two-step synthetic strategy utilizing presynthesized fourconnected tetrahedral B(im) 4 − ligands or three-connected tripodal BH(im) 3 − ligands to fix the B 3+ on one side of imidazolate ring (Figure 1c).…”

Section: Introductionmentioning

confidence: 99%

Recent Applications of Multifunctional Boron Imidazolate Framework Materials

Zhang,

Lu,

Zhang

2023

Acc. Mater. Res.

Self Cite

View full text Add to dashboard Cite

Metrics & MoreArticle Recommendations CONSPECTUS: Boron imidazolate frameworks (BIFs) were first reported as a kind of zeolite-like metal−organic frameworks (MOFs). Zeolites are crystalline materials with porous properties and significant commercial values. In recent decades, the rapid development of MOFs, which are formed by coordinate bonds between metal ions or clusters with organic ligands, offers great opportunities for the rational design of new crystalline materials. Therefore, the zeolite-like MOFs with zeolitic topologies have become a hot topic in both chemistry and materials research, due to their periodic network structures, tunable pore size, and tailorable microenvironments.In 2009, Jian Zhang and coauthors first introduced the rational design and synthesis of a family of zeolitic boron imidazolate frameworks (BIFs) by the cross-link of presynthesized boron imidazolate ligands (B(im) 4 − or BH(im) 3 − ) and monovalent tetrahedral metal centers. Since then, BIFs have been continuously explored as a new type of materials with promising applications due to their unique advantages of ultralightweight, zeolitic topologies, two-step synthesis, various metal centers, controllable tetrahedral and tripodal boron imidazolate ligands. BIFs also can be regarded as a unique family of materials that lie between MOFs and covalent organic frameworks (COFs) because of the coexistence of covalent (B−N) and coordination bonds (M−N). However, most of the initially obtained traditional zeolite-like BIFs have relatively dense structures, which is due to the shorter B−N distance (about 1.5 Å) compared to larger metal−ligand distances in MOF (usually about 2.0 Å). Recent reports have shown that the introduction of O-donor carboxylate ligands into the N-donor B-im-M system creates a new synthetic advancement as well as a variety of functional structures. Furthermore, both tetrahedral B(im) 4− and tripodal BH(im) 3 − ligands can be readily synthesized prior to solvothermal synthesis. Take the advantages of the controllability of boron imidazolate ligands, the synthesized BIF structures break through the limitation of the traditional four-connected zeolite topology and achieve the diversity of materials, such as interrupted zeolite type frameworks with open architecture and pore-space-partition type zeolite with functional pore surfaces. Such synthetic and pore engineering further expanded the potential applications of BIFs in gas adsorption and separation, solid-state photoluminescence, and mechanochromic photoluminescence. Moreover, catalysis is one of the most promising applications of MOFs and has attracted widespread interest. It faces an even more significant challenge, which is the limited stability in harsh reaction conditions. The B−N covalent bonds and M−N coordination bonds within the framework provide good stability and reducibility for BIFs. In this Account, we aim to shed light on the recent advancements in the development of functional structures based on BIFs, and their diverse applications in multiple domains...

show abstract

Design and syntheses of hybrid zeolitic imidazolate frameworks

Cited by 23 publications

References 114 publications

Modulating Liquid–Liquid Transitions and Glass Formation in Zeolitic Imidazolate Frameworks by Decoration with Electron-Withdrawing Cyano Groups

Modulating Liquid–Liquid Transitions and Glass Formation in Zeolitic Imidazolate Frameworks by Decoration with Electron-Withdrawing Cyano Groups

Three multi-responsive luminescent Zn-CPs for the detection of antibiotics/cations/anions in aqueous media

Recent Applications of Multifunctional Boron Imidazolate Framework Materials

Contact Info

Product

Resources

About