Hollow metal–organic framework polyhedra synthesized by a CO2–ionic liquid interfacial templating route

Peng, Li; Zhang, Jianling; Li, Jianshen; Han, Buxing; Xue, Zhimin; Zhang, Binbin; Shi, Jinghua; Yang, Guanying

doi:10.1016/j.jcis.2013.10.041

Cited by 54 publications

(40 citation statements)

References 43 publications

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“…According to the formation mechanism proposed by the authors, the surfactant molecules are responsible for the formation of the cylindrical micelles, which act as soft templates for the formation of MOF nanospheres, while the IL, Zn(NO 3 ) 2 and H 2 BDC contribute to the formation of the continuous crystalline microporous material. Following the same idea, hollow Zn-BTC-MOF tetrahedra and hollow Zn-BDC-MOF prisms were obtained in the N-EtFOSA/TMGT/scCO 2 system [182]. As proposed by the authors, the large number of CO 2 bubbles provides numerous CO 2 -IL interfaces which serves as the nucleation centers for the MOF growth.…”

Section: Synthesis Of Mofs In the Presence Of Ionic Liquidsmentioning

confidence: 97%

Multi-scale crystal engineering of metal organic frameworks

Seoane

Castellanos

Dikhtiarenko

et al. 2016

Coordination Chemistry Reviews

258

163

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Section: Synthesis Of Mofs In the Presence Of Ionic Liquidsmentioning

confidence: 97%

Multi-scale crystal engineering of metal organic frameworks

Seoane

Castellanos

Dikhtiarenko

et al. 2016

Coordination Chemistry Reviews

258

163

View full text Add to dashboard Cite

“…1). Recently, similar synthetic efforts have been applied to metal–organic frameworks (MOFs), an emerging class of porous materials222324252627282930313233343536. However, unlike other micro-/nanostructures reported in metal/metal oxide systems, those in MOFs are still in their infancy, as evidenced by the fact that the vast majority of these materials have hollow forms, an early stage of form evolution (Fig.…”

mentioning

confidence: 99%

“…1)37. The synthetic strategies identified for hollow MOFs include templating methods (using polystyrene beads2526, emulsion droplets27, CO 2 bubbles28, MOFs29 and metal–organic polyhedron (MOP) crystals30), interfacial growing methods31, spray-drying techniques32 and surface-driven mechanisms33. A recent notable example from Lah group utilizes MOP crystals as a sacrificial template to synthesize hollow MOFs30.…”

mentioning

confidence: 99%

Evolution of form in metal–organic frameworks

2017

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Self-assembly has proven to be a widely successful synthetic strategy for functional materials, especially for metal–organic materials (MOMs), an emerging class of porous materials consisting of metal–organic frameworks (MOFs) and metal–organic polyhedra (MOPs). However, there are areas in MOM synthesis in which such self-assembly has not been fully utilized, such as controlling the interior of MOM crystals. Here we demonstrate sequential self-assembly strategy for synthesizing various forms of MOM crystals, including double-shell hollow MOMs, based on single-crystal to single-crystal transformation from MOP to MOF. Moreover, this synthetic strategy also yields other forms, such as solid, core-shell, double and triple matryoshka, and single-shell hollow MOMs, thereby exhibiting form evolution in MOMs. We anticipate that this synthetic approach might open up a new direction for the development of diverse forms in MOMs, with highly advanced areas such as sequential drug delivery/release and heterogeneous cascade catalysis targeted in the foreseeable future.

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“…Polystyrene beads have been used as sacrificial materials for the fabrication of well-defined hollow MOFs. 18,21 Additionally, CO 2 droplets have been employed as internal cores for the gas-liquid interfacial templating formation of hollow MOFs, 31 and emulsion droplets have been used for the self-assembly of MOF particles at the liquid-liquid interface to form monolayer MOF shells. 30 However, the preparation of hollow MOF 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 3 microparticles in the absence of any add-on template materials via a one-step reaction was barely studied before.…”

mentioning

confidence: 99%

Hollow Metal–Organic Framework Microparticles Assembled via a Self-Templated Formation Mechanism

Lee

Choi

Lee

et al. 2015

Crystal Growth & Design

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Hollow particles are considered to be fascinating materials due to their useful applications and unique properties. Understanding the formation mechanism of hollow structures is critical for their controlled formation. Herein, we demonstrate the fabrication of hollow metal–organic framework (hollow MOF) microparticles via a one-step solvothermal reaction of Zn(NO3)2 and 1,3,5-benzenetricarboxylic acid (H3BTC) without extra template materials. The formation mechanism study of the hollow MOF reveals a unique self-templated formation mechanism consisting of three stages: (1) spherical microparticles are initially formed during the early stage of the reaction, (2) the initially formed spherical microparticles act as self-templates for the growth of new crystalline MOF materials during the middle stage of the reaction, and (3) the initially formed spherical microparticles spontaneously disappear for the formation of hollow MOFs during the late stage of the reaction.

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Hollow metal–organic framework polyhedra synthesized by a CO2–ionic liquid interfacial templating route

Cited by 54 publications

References 43 publications

Multi-scale crystal engineering of metal organic frameworks

Multi-scale crystal engineering of metal organic frameworks

Evolution of form in metal–organic frameworks

Hollow Metal–Organic Framework Microparticles Assembled via a Self-Templated Formation Mechanism

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