Coordination polymers from a flexible alkyldiamine-derived ligand

Emerson, Adrian; Hawes, Chris S.; Chaffee, Alan L.; Batten, Stuart Robert; Turner, David R.

doi:10.1039/c7ce01133d

Cited by 6 publications

(3 citation statements)

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“…Previously we have reported the use of ligands derived from polyamines that are traditionally good chelators, such as ethylenediamine, , 1,3-diaminopropane and 1,4,7,10-tetraazacyclododecane as a synthetic approach to incorporating amine functionality into MOFs. These ligands contain the amine functionality within the backbone of the ligand, instead of the pendant amine functionality often reported in the literature .…”

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High-Connectivity Approach to a Hydrolytically Stable Metal–Organic Framework for CO₂ Capture from Flue Gas

et al. 2018

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T here have been significant advances in the design and development of porous coordination polymers (PCPs), or metal−organic frameworks (MOFs), over the past three decades, since the initial design philosophy was outlined by Hoskins and Robson. 1 MOFs are of interest due to their high porosity with potential to be used in a wide range of applications including gas capture and storage, separations and catalysis. 2−4 MOFs are often compared with zeolites as both classes of materials contain accessible internal void space; however, the ability to chemically tune the ligands of MOFs allows for the inclusion of different functionalities. One of the advantages that zeolites hold over MOFs is their stability to a wider range of conditions, with MOFs being thermally stable but hydrothermally less stable. This restricts MOFs from being applied to processes such as postcombustion CO 2 capture technologies as the flue gas contains 6−7% water vapor. 5,6 Thus, it is crucial that if MOFs are to be used for industrial applications, the problem with stability needs to be addressed and overcome, in this case for example via synthetic design. True hydrolytic stability is still relatively rare, typically arising from inert metal clusters. 7 Work by Gelfand and Shimizu described a systematic method for parametrizing the hydrolytic stability of MOFs by grading the kinetic and thermodynamic water stability, types of water exposure, methods of probing water stability and degrees of water stability. 8 This analysis resulted in a grading system that compares the various levels of hydrolytic stability, using a number from 1 to 6 (1 = near ambient conditions, 6 = boiling water) to denote harshness of exposure and a letter from A to D (A = retention of crystallinity and porosity, D = loss of crystallinity and porosity) to denote proof of stability. The authors note that these definitions should be used as guidelines for discussion and not quantitative metrics.There have been a few examples of MOFs such as HKUST-1, 9 UiO-66, 10 MIL-100, 11 and MIL-101 12,13 that have been shown to not only be relatively stable in humid conditions but to even have enhanced CO 2 sorption in humid environments. 14−17 HKUST-1 was one of the frameworks listed as a case study by Shimizu, which when placed in water at 50 °C for 24 h showed a change in the PXRD pattern and decrease in internal surface area from 1340 to 647 m 2 /g. 18 This behavior resulted in a classification of 4B stability, however when HKUST-1 was exposed to humidity it was found to degrade into a nonporous phase, 19 which changes its classification to a 3D rating. Another material studied was the ZIF-8 network, which showed 6C stability when placed in boiling water for 1 week. 20 A comprehensive review by Li et al. covered

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High-Connectivity Approach to a Hydrolytically Stable Metal–Organic Framework for CO₂ Capture from Flue Gas

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“…This type of ligands may produce a large variety of structures in the solid state, because of their ability to bend or turn around bonds and orient themselves differently towards metals during the crystallization process in solution. [25][26][27] A large variety of flexible ligands are available, and, for example, the neutral ligand ethanediyl bis(isonicotinate), has been used for the formation of coordination polymers of various dimentionalities. [28][29][30][31][32][33] Due to its flexible nature, this ligand displays several coordination possibilities by forming thus metallamacrocycles [28][29][30][31] and CPs, 32,33 when combined with a metallic salt.…”

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confidence: 99%

Design of coordination polymers based on combinations of 1,2-diphenylethane-1,2-diyl diisonicotinate with Cu(ii), Zn(ii), Cd(ii) and Co(ii)

et al. 2022

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Synthetic approaches for the incorporation of free amine functionalities in porous coordination polymers for enhanced CO2 sorption

Emerson

Chahine

Batten

et al. 2018

Coordination Chemistry Reviews

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Coordination polymers from a flexible alkyldiamine-derived ligand

Abstract: A traditionally good chelating motif, propanediamine, has been incorporated into a robust coordination framework with vacant amine sites.

Cited by 6 publications

References 42 publications

High-Connectivity Approach to a Hydrolytically Stable Metal–Organic Framework for CO₂ Capture from Flue Gas

High-Connectivity Approach to a Hydrolytically Stable Metal–Organic Framework for CO₂ Capture from Flue Gas

Design of coordination polymers based on combinations of 1,2-diphenylethane-1,2-diyl diisonicotinate with Cu(ii), Zn(ii), Cd(ii) and Co(ii)

Synthetic approaches for the incorporation of free amine functionalities in porous coordination polymers for enhanced CO2 sorption

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Coordination polymers from a flexible alkyldiamine-derived ligand

Abstract: A traditionally good chelating motif, propanediamine, has been incorporated into a robust coordination framework with vacant amine sites.

Cited by 6 publications

References 42 publications

High-Connectivity Approach to a Hydrolytically Stable Metal–Organic Framework for CO2 Capture from Flue Gas

High-Connectivity Approach to a Hydrolytically Stable Metal–Organic Framework for CO2 Capture from Flue Gas

Design of coordination polymers based on combinations of 1,2-diphenylethane-1,2-diyl diisonicotinate with Cu(ii), Zn(ii), Cd(ii) and Co(ii)

Synthetic approaches for the incorporation of free amine functionalities in porous coordination polymers for enhanced CO2 sorption

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High-Connectivity Approach to a Hydrolytically Stable Metal–Organic Framework for CO₂ Capture from Flue Gas

High-Connectivity Approach to a Hydrolytically Stable Metal–Organic Framework for CO₂ Capture from Flue Gas