Metallodynameric membranes – toward the constitutional transport of gases

Nasr, Gihane; Macron, Thomas; Gilles, Arnaud; Mouline, Zineb; Barboiu, Mihail

doi:10.1039/c2cc32656f

Cited by 27 publications

(22 citation statements)

References 54 publications

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“…Within this context, we previously showed that dynamic covalent polymers, [15] or dynamers, [20][21][22][23] generated from reversibly interacting monomers, offer the possibility to address these issues. [24,25] In dynamers, the components are reversibly connected, and they self-assemble in such a fashion that their overall morphology overrides defects during the forAbstract: Obtaining high permeability whilst keeping a reasonable selectivity is the most important challenge in the development of membrane systems for gas separation. Satisfactory performance is usually obtained with polymeric membranes through which gas transport is controlled by gas-diffusivity in glassy polymers and by gas-solubility in rubbery polymers.…”

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confidence: 99%

“…For all these reasons, in this study, nanometric macromonomers and dialdehyde core connectors have been used to conceive dense ROFs for the preparation of dynameric membranes for selective gas transport. [22][23][24][25] The isophthalaldehyde (1), the bis(3-aminopropyl)-polytetrahydrofuran (Mn~1100 g mol Compounds (Figure 2 a) generate dynameric membranes based on three structural features: 1) The hydrophobic linear polyTHF (1) has been used to generate rigid crystalline phases considered to have low-permeability for gas transport.…”

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confidence: 99%

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Tuning Gas‐Diffusion through Dynameric Membranes: Toward Rubbery Organic Frameworks (ROFs)

Nasr

Gilles

Macron

et al. 2013

Israel Journal of Chemistry

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Among the industrial methods used for capturing CO 2 (absorption, distillation, etc.), [1] membrane technology, [2][3][4][5][6][7][8][9][10][11] which offers advantages such energy saving, simple design and scale-up, is becoming continually more prevalent. High permeability combined with reasonable selectivity is the most important goal in developing membranes for gas separation. This goal is usually achieved through the use of polymeric membranes, through which gas transport is controlled by gas-diffusivity in glassy polymers and by gas-solubility in rubbery polymers. De novo design of synthetic membrane materials like blockco-polymers, [2][3][4][5] polymeric composites, [6,7] mixed-matrix hybrids [8] and pseudo-microporous polymers [9][10] metal organic frameworks-MOFs [1,11] has been identified as an emerging area of interest. The combination or replacement of classical glassy polymers with crystalline MOFs, ZIFs, or zeolites provides molecularly controlled permeability and selectivity. However, attempts to obtain mechanically stable and homogeneous layers on various supports have been met with difficulty.Taking advantage of the high permeabilities and flexible casting properties observed for rubbery polymers, we decided to build ROFs as new membrane separation systems for gases. ROFs may provide premises for more fine structural interaction of diffusing gas molecules with molecular addressable domains. Minimizing the size of ultradense addressable transporting domains [12][13][14][15] would make it possible to improve the limits of interaction of gas molecules with percolated conductive domains with high diffusional behaviors. [16][17][18][19] Such an improvement is specifically of interest to membrane scientists (Figure 1).Furthermore, the size of addressable elementary domains for the diffusion of gas molecules is reminiscent of the situation where pixel size determines the quality of resulting images in LCD devices. Within this context, we previously showed that dynamic covalent polymers, [15] or dynamers, [20][21][22][23] generated from reversibly interacting monomers, offer the possibility to address these issues. [24,25] In dynamers, the components are reversibly connected, and they self-assemble in such a fashion that their overall morphology overrides defects during the forAbstract: Obtaining high permeability whilst keeping a reasonable selectivity is the most important challenge in the development of membrane systems for gas separation. Satisfactory performance is usually obtained with polymeric membranes through which gas transport is controlled by gas-diffusivity in glassy polymers and by gas-solubility in rubbery polymers. During the last decade, important advances in this field have been made possible by molecular control of gas separation properties. The combination or replacement of classical glassy polymers with metal-organic crystalline frameworks (crystalline MOFs), such as zeolitic imidazolate frameworks (ZIFs) or other zeolites, provides reasonable permeability through the porous networks...

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Tuning Gas‐Diffusion through Dynameric Membranes: Toward Rubbery Organic Frameworks (ROFs)

Nasr

Gilles

Macron

et al. 2013

Israel Journal of Chemistry

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“…However, in this study the aminosilane functionalization of PHPS was performed using the (3-trimethoxysilyl propyl) diethylenetriamine as chemical modifier [Eq. (5)]. The presence of a non-nucleophile organic base such as pyridine is important because it assists the proton transfer that takes place between the NH group from PHPS and the alkoxy group from the chemical modifier during the silylation reaction.…”

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confidence: 99%

Synthesis and characterization of organoamine-functionalized amorphous silica materials for CO<sub>2</sub>-selective membranes

Mouline

Asai

Kawai

et al. 2015

J. Ceram. Soc. Japan

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Amorphous silica-based organoamine-functionalized hybrid materials were designed through polymer-derived ceramics (PDCs) route, in order to selectively transport CO 2 . Silicon-based perhydropolysilazane (PHPS) polymer was chemically modified with an alkylamino silane derivative, and subsequently oxidized in air at room temperature to afford organoamine-functionalized silica. The effect of the organoamine functionalization in the powdered sample as well as for the membrane is discussed with regard to the pure PHPS-derived amorphous silica.

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“…The formation of macrocycles is driven by the change in conformation of the polyimine in order to complex the metal ion. Nasr et al used M–L interactions to crosslink a polyimine polymer to obtain membranes permeable to gases by a simple procedure . In another example from Lehn's group, polyimino fluorenones could undergo constitutional recombination in the presence of external additives (H + and Zn 2+ ), and thus changed their optical properties when zinc ions were present, as could be inferred from UV‐Vis and fluorescence spectroscopic titrations .…”

Section: Iminesmentioning

confidence: 99%

Dynamic covalent polymers

García

Smulders²

2016

J. Polym. Sci. Part A: Polym. Chem.

174

159

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This Highlight presents an overview of the rapidly growing field of dynamic covalent polymers. This class of polymers combines intrinsic reversibility with the robustness of covalent bonds, thus enabling formation of mechanically stable, polymer‐based materials that are responsive to external stimuli. It will be discussed how the inherent dynamic nature of the dynamic covalent bonds on the molecular level can be translated to the macroscopic level of the polymer, giving access to a range of applications, such as stimuli‐responsive or self‐healing materials. A primary distinction will be made based on the type of dynamic covalent bond employed, while a secondary distinction will be based on the consideration whether the dynamic covalent bond is used in the main chain of the polymer or whether it is used to allow side chain modification of the polymer. Emphasis will be on the chemistry of the dynamic covalent bonds present in the polymer, in particular in relation to how the specific (dynamic) features of the bond impart functionality to the polymer material, and to the conditions under which this dynamic behavior is manifested. © 2016 The Authors. Journal of Polymer Science Part A: Polymer Chemistry Published by Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2016, 54, 3551–3577.

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Metallodynameric membranes – toward the constitutional transport of gases

Abstract: The adequate selection of macromonomers, dialdehyde core connectors and of coordinating metal ions makes possible the generation of metallodynameric materials, allowing the fine modulation of the gas transport through rubbery membranes.

Cited by 27 publications

References 54 publications

Tuning Gas‐Diffusion through Dynameric Membranes: Toward Rubbery Organic Frameworks (ROFs)

Tuning Gas‐Diffusion through Dynameric Membranes: Toward Rubbery Organic Frameworks (ROFs)

Synthesis and characterization of organoamine-functionalized amorphous silica materials for CO<sub>2</sub>-selective membranes

Dynamic covalent polymers

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