A porous layered metal-organic framework from π–π-stacking of layers based on a Co6 building unit

Perkins, Catherine; Warren, John E.; Fateeva, Alexandra; Stylianou, Kyriakos C.; McLennan, Alec; Jelfs, Kim E.; Bradshaw, Darren; Rosseinsky, Matthew J.

doi:10.1016/j.micromeso.2011.12.057

Cited by 9 publications

(4 citation statements)

References 22 publications

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“…41 Therefore, the selective adsorption of salicylic acid on the adsorbent as well as separation of salicylic acid from phenol is of great importance. The hydrophobic HCP networks have relatively strong affinity to the hydrophobic portion of salicylic acid due to the hydrophobic interaction or p-p stacking, 43,44 whereas the hydrophilic PADETA networks are more inclined to approach the hydrophilic portion of salicylic acid by the possible electrostatic interaction or hydrogen bonding. Moreover, the neighboring carboxyl group can form intramolecular hydrogen bonds with the phenolic hydroxyl group, 42 which makes salicylic acid a wellbalanced molecule with both the hydrophobic and hydrophilic portions.…”

Section: Separation Of Salicylic Acid From Phenol In Their Mixed Solumentioning

confidence: 99%

“…3, HCP/PADETA IPNs achieves highly efficient adsorption towards salicylic acid. The hydrophobic HCP networks have relatively strong affinity to the hydrophobic portion of salicylic acid due to the hydrophobic interaction or p-p stacking, 43,44 whereas the hydrophilic PADETA networks are more inclined to approach the hydrophilic portion of salicylic acid by the possible electrostatic interaction or hydrogen bonding. 22,27,40 Moreover, some other molecules such as phenol are not adsorbed effectively and the separation of salicylic acid from phenol is possible.…”

Section: Separation Of Salicylic Acid From Phenol In Their Mixed Solu...mentioning

confidence: 99%

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Comparison of hyper-cross-linked polystyrene/polyacryldiethylenetriamine (HCP/PADETA) interpenetrating polymer networks (IPNs) with hyper-cross-linked polystyrene (HCP): structure, adsorption and separation properties

Han

Huang

et al. 2016

RSC Adv.

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Novel hyper-cross-linked polystyrene/polyacryldiethylenetriamine (HCP/PADETA) interpenetrating polymer networks (IPNs) were prepared, characterized and evaluated for their adsorption and separation properties using hyper-cross-linked polystyrene (HCP) as the reference. In spite of its much lower Brunauer-Emmett-Teller surface area and less pore volume, HCP/PADETA IPNs possessed a preferable pore structure and appropriate polarity, resulting in a larger equilibrium capacity, faster adsorption rate, higher dynamic breakthrough and saturated capacity towards salicylic acid than HCP. In particular, HCP/ PADETA IPNs had a higher enrichment factor for salicylic acid over phenol, leading to the high-efficiency separation of salicylic acid from phenol in their mixed solution.

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Section: Separation Of Salicylic Acid From Phenol In Their Mixed Solumentioning

confidence: 99%

Section: Separation Of Salicylic Acid From Phenol In Their Mixed Solu...mentioning

confidence: 99%

Comparison of hyper-cross-linked polystyrene/polyacryldiethylenetriamine (HCP/PADETA) interpenetrating polymer networks (IPNs) with hyper-cross-linked polystyrene (HCP): structure, adsorption and separation properties

Han

Huang

et al. 2016

RSC Adv.

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“…59 The Q st of 1′ for CH 4 was found to be 20.3 kJ/mol at zero coverage, with a slight decrease to 18.4 kJ/ mol at high loadings (Figure S30c). 60 The channel dimensions and polyaromatic pores of 1′ suggested measurement of the vapor sorption isotherms of mxylene (mX) and p-xylene (pX). The similar sizes and physicochemical behavior of the two xylene isomers (pX, 7.72 Å × 5.11 Å; mX, 7.43 Å × 5.67 Å; Figure S31) make separations based on open-framework materials of interest, with some of the best figures of merit reported for MOF-type structures.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

Dimensionality Transformation through Paddlewheel Reconfiguration in a Flexible and Porous Zn-Based Metal–Organic Framework

et al. 2012

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The reaction between Zn and a pyrene-based ligand decorated with benzoate fragments (H(4)TBAPy) yields a 2D layered porous network with the metal coordination based on a paddlewheel motif. Upon desolvation, the structure undergoes a significant and reversible structural adjustment with a corresponding reduction in crystallinity. The combination of computationally assisted structure determination and experimental data analysis of the desolvated phase revealed a structural change in the metal coordination geometry from square-pyramidal to tetrahedral. Simulations of desolvation showed that the local distortion of the ligand geometry followed by the rotation and displacement of the pyrene core permits the breakup of the metal-paddlewheel motifs and the formation of 1D Zn-O chains that cross-link adjacent layers, resulting in a dimensionality change from the 2D layered structure to a 3D structure. Constrained Rietveld refinement of the powder X-ray diffraction pattern of the desolvated phase and the use of other analytical techniques such as porosity measurements, (13)C CP MAS NMR spectroscopy, and fluorescence spectroscopy strongly supported the observed structural transformation. The 3D network is stable up to 425 °C and is permanently porous to CO(2) with an apparent BET surface area of 523(8) m(2)/g (p/p° = 0.02-0.22). Because of the hydrophobic nature, size, and shape of the pores of the 3D framework, the adsorption behavior of the structure toward p-xylene and m-xylene was studied, and the results indicated that the shape of the isotherm and the kinetics of the adsorption process are determined mainly by the shape of the xylene isomers, with each xylene isomer interacting with the host framework in a different manner.

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“…The nettopologies of the s-block MOFs are heavily influenced by the shape and steric bulk of the ligands, π orbital interactions, as well as solvent polarity. 16 Thus, we surmised that an organic linker that has a strong preference to form π-stacked structures 17 may drive the formation of a network architecture with closely spaced or "stacked" TBAPy moieties. This hypothesis is supported by recent work showing that TBAPy is capable of forming a robust hydrogen-bonded organic framework (PFC-1) 18 that displays permanent porosity with a surface area of 2122 m 2 g -1 , and exceptional chemical stability.…”

Section: Introductionmentioning

confidence: 99%

Structural modulation of the photophysical and electronic properties of pyrene-based 3D metal–organic frameworks derived from s-block metals

et al. 2021

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A porous layered metal-organic framework from π–π-stacking of layers based on a Co6 building unit

Cited by 9 publications

References 22 publications

Comparison of hyper-cross-linked polystyrene/polyacryldiethylenetriamine (HCP/PADETA) interpenetrating polymer networks (IPNs) with hyper-cross-linked polystyrene (HCP): structure, adsorption and separation properties

Comparison of hyper-cross-linked polystyrene/polyacryldiethylenetriamine (HCP/PADETA) interpenetrating polymer networks (IPNs) with hyper-cross-linked polystyrene (HCP): structure, adsorption and separation properties

Dimensionality Transformation through Paddlewheel Reconfiguration in a Flexible and Porous Zn-Based Metal–Organic Framework

Structural modulation of the photophysical and electronic properties of pyrene-based 3D metal–organic frameworks derived from s-block metals

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