1
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Yan R, Mishra B, Traxler M, Roeser J, Chaoui N, Kumbhakar B, Schmidt J, Li S, Thomas A, Pachfule P. A Thiazole-linked Covalent Organic Framework for Lithium-Sulphur Batteries. Angew Chem Int Ed Engl 2023:e202302276. [PMID: 37193648 DOI: 10.1002/anie.202302276] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 05/14/2023] [Accepted: 05/15/2023] [Indexed: 05/18/2023]
Abstract
Lithium-sulphur (Li-S) batteries are a promising alternative power source, as they can provide a higher energy density than current lithium-ion batteries. Porous materials are often used as cathode materials as they can act as a host for sulphur in such batteries. Recently, covalent organic frameworks (COFs) have also been used, however they typically suffer from stability issues resulting in limited and thus insufficient durability under practical conditions and applications. Herein, we report the synthesis of a crystalline and porous imine-linked triazine-based dimethoxybenzene-functionalized COF (TTT-DMTD) incorporating a high density redox sites. The imine linkages were further post-synthetically transformed to yield a robust thiazole-linked COF (THZ-DMTD) by utilizing a sulphur-assisted chemical conversion method, while maintaining the crystallinity. As a synergistic effect of its high crystallinity, porosity and the presence of redox-active moieties, the thiazole-linked THZ-DMTD exhibited a high capacity and long-term stability (642 mAh g-1 at 1.0 C; 78.9% capacity retention after 200 cycles) when applied as a cathode material in a Li-S battery.
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Affiliation(s)
- Rui Yan
- Sichuan University, College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, CHINA
| | - Bikash Mishra
- S N Bose National Centre for Basic Sciences Department of Chemical Biological and Macromolecular Sciences, Department of Chemical and Biological Sciences, INDIA
| | - Michael Traxler
- TU Berlin: Technische Universitat Berlin, Department of Chemistry/Functional Materials, GERMANY
| | - Jérôme Roeser
- TU Berlin: Technische Universitat Berlin, Department of Chemistry/Functional Materials, GERMANY
| | - Nicolas Chaoui
- TU Berlin University: Technische Universitat Berlin, Department of Chemistry/Functional Materials, GERMANY
| | - Bidhan Kumbhakar
- S N Bose National Centre for Basic Sciences, Department of Chemical and Biological Sciences, GERMANY
| | - Johannes Schmidt
- TU Berlin University: Technische Universitat Berlin, Department of Chemistry/Functional Materials, GERMANY
| | - Shuang Li
- Sichuan University, College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, CHINA
| | - Arne Thomas
- Technische Universität Berlin: Technische Universitat Berlin, Department of Chemistry / Functional Materials, Hardenbergstr. 40, 10623, Berlin, GERMANY
| | - Pradip Pachfule
- S N Bose National Centre for Basic Sciences, Department of Chemical and Biological Sciences, INDIA
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2
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Das P, Roeser J, Thomas A. Solar Light Driven H2O2 Production and Selective Oxidations using a Covalent Organic Framework Photocatalyst prepared by a Multicomponent Reaction. Angew Chem Int Ed Engl 2023:e202304349. [PMID: 37150745 DOI: 10.1002/anie.202304349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Revised: 05/04/2023] [Accepted: 05/05/2023] [Indexed: 05/09/2023]
Abstract
A chemically stable 2D microporous COF (PMCR-1) was synthesized via the multicomponent Povarov reaction. PMCR-1 exhibits a remarkable and long-term stable photocatalytic H2O2 production rate (60 h) from pure and sea water under visible light. The H2O2 production is markedly enhanced when benzyl alcohol (BA) is added as reductant, which is also due to a strong π-π interaction of BA with dangling phenyl moieties in the COF pores, introduced by the multicomponent Povarov reaction. Motivated by the concomitant BA oxidation to benzaldehyde during H2O2 formation, the photocatalytic oxidation of various organic substrates such as benzyl amine and methyl sulfide derivatives was investigated. It is shown that the well-defined micropores of PMCR-1 enable size-selective photocatalytic oxidation.
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Affiliation(s)
- Prasenjit Das
- TU Berlin: Technische Universitat Berlin, Deoartment of Chemistry / Functional Materials, GERMANY
| | - Jérôme Roeser
- TU Berlin: Technische Universitat Berlin, Department of Chemistry / Functional Materials, GERMANY
| | - Arne Thomas
- Technische Universität Berlin: Technische Universitat Berlin, Department of Chemistry / Functional Materials, Hardenbergstr. 40, 10623, Berlin, GERMANY
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3
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Das P, Chakraborty G, Roeser J, Vogl S, Rabeah J, Thomas A. Integrating Bifunctionality and Chemical Stability in Covalent Organic Frameworks via One-Pot Multicomponent Reactions for Solar-Driven H 2O 2 Production. J Am Chem Soc 2023; 145:2975-2984. [PMID: 36695541 DOI: 10.1021/jacs.2c11454] [Citation(s) in RCA: 20] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Multicomponent reactions (MCRs) can be used to introduce different functionalities into highly stable covalent organic frameworks (COFs). In this work, the irreversible three-component Doebner reaction is utilized to synthesize four chemically stable quinoline-4-carboxylic acid DMCR-COFs (DMCR-1-3 and DMCR-1NH) equipped with an acid-base bifunctionality. These DMCR-COFs show superior photocatalytic H2O2 evolution (one of the most important industrial oxidants) compared to the imine COF analogue (Imine-1). This is achieved with sacrificial oxidants but also in pure water and under an oxygen or air atmosphere. Furthermore, the DMCR-COFs show high photostability, durability, and recyclability. MCR-COFs thus provide a viable materials' platform for solar to chemical energy conversion.
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Affiliation(s)
- Prasenjit Das
- Department of Chemistry/Functional Materials, Technische Universität Berlin, 10623 Berlin, Germany
| | - Gouri Chakraborty
- BAM Federal Institute for Materials Research and Testing, Richard-Willstätter-Str. 11, 12489 Berlin, Germany
| | - Jérôme Roeser
- Department of Chemistry/Functional Materials, Technische Universität Berlin, 10623 Berlin, Germany
| | - Sarah Vogl
- Department of Chemistry/Functional Materials, Technische Universität Berlin, 10623 Berlin, Germany
| | - Jabor Rabeah
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Str. 29a, 18059 Rostock, Germany
| | - Arne Thomas
- Department of Chemistry/Functional Materials, Technische Universität Berlin, 10623 Berlin, Germany
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4
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Traxler M, Reischauer S, Vogl S, Roeser J, Rabeah J, Penschke C, Saalfrank P, Pieber B, Thomas A. Programmable Photocatalytic Activity of Multicomponent Covalent Organic Frameworks Used as Metallaphotocatalysts. Chemistry 2023; 29:e202202967. [PMID: 36223495 PMCID: PMC10108091 DOI: 10.1002/chem.202202967] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Indexed: 12/05/2022]
Abstract
The multicomponent approach allows to incorporate several functionalities into a single covalent organic framework (COF) and consequently allows the construction of bifunctional materials for cooperative catalysis. The well-defined structure of such multicomponent COFs is furthermore ideally suited for structure-activity relationship studies. We report a series of multicomponent COFs that contain acridine- and 2,2'-bipyridine linkers connected through 1,3,5-benzenetrialdehyde derivatives. The acridine motif is responsible for broad light absorption, while the bipyridine unit enables complexation of nickel catalysts. These features enable the usage of the framework materials as catalysts for light-mediated carbon-heteroatom cross-couplings. Variation of the node units shows that the catalytic activity correlates to the keto-enamine tautomer isomerism. This allows switching between high charge-carrier mobility and persistent, localized charge-separated species depending on the nodes, a tool to tailor the materials for specific reactions. Moreover, nickel-loaded COFs are recyclable and catalyze cross-couplings even using red light irradiation.
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Affiliation(s)
- Michael Traxler
- Department of Chemistry/Functional Materials, Technische Universität Berlin, Hardenbergstraße 40, 10623, Berlin, Germany
| | - Susanne Reischauer
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476, Potsdam, Germany.,Department of Chemistry and Biochemistry Freie Universität Berlin, Takustraße 3, 14195, Berlin, Germany
| | - Sarah Vogl
- Department of Chemistry/Functional Materials, Technische Universität Berlin, Hardenbergstraße 40, 10623, Berlin, Germany
| | - Jérôme Roeser
- Department of Chemistry/Functional Materials, Technische Universität Berlin, Hardenbergstraße 40, 10623, Berlin, Germany
| | - Jabor Rabeah
- Leibniz Institute for Catalysis (LIKAT Rostock), Universität Rostock, Albert-Einstein-Straße 29a, 18059, Rostock, Germany
| | - Christopher Penschke
- Institut für Chemie, Universität Potsdam, Karl-Liebknecht Straße 24-25, 14476, Potsdam, Germany
| | - Peter Saalfrank
- Institut für Chemie, Universität Potsdam, Karl-Liebknecht Straße 24-25, 14476, Potsdam, Germany
| | - Bartholomäus Pieber
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476, Potsdam, Germany
| | - Arne Thomas
- Department of Chemistry/Functional Materials, Technische Universität Berlin, Hardenbergstraße 40, 10623, Berlin, Germany
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5
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Yang J, Ghosh S, Roeser J, Acharjya A, Penschke C, Tsutsui Y, Rabeah J, Wang T, Djoko Tameu SY, Ye MY, Grüneberg J, Li S, Li C, Schomäcker R, Van De Krol R, Seki S, Saalfrank P, Thomas A. Constitutional isomerism of the linkages in donor–acceptor covalent organic frameworks and its impact on photocatalysis. Nat Commun 2022; 13:6317. [PMID: 36274186 PMCID: PMC9588771 DOI: 10.1038/s41467-022-33875-9] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Accepted: 10/06/2022] [Indexed: 11/20/2022] Open
Abstract
When new covalent organic frameworks (COFs) are designed, the main efforts are typically focused on selecting specific building blocks with certain geometries and properties to control the structure and function of the final COFs. The nature of the linkage (imine, boroxine, vinyl, etc.) between these building blocks naturally also defines their properties. However, besides the linkage type, the orientation, i.e., the constitutional isomerism of these linkages, has rarely been considered so far as an essential aspect. In this work, three pairs of constitutionally isomeric imine-linked donor-acceptor (D-A) COFs are synthesized, which are different in the orientation of the imine bonds (D-C=N-A (DCNA) and D-N=C-A (DNCA)). The constitutional isomers show substantial differences in their photophysical properties and consequently in their photocatalytic performance. Indeed, all DCNA COFs show enhanced photocatalytic H2 evolution performance than the corresponding DNCA COFs. Besides the imine COFs shown here, it can be concluded that the proposed concept of constitutional isomerism of linkages in COFs is quite universal and should be considered when designing and tuning the properties of COFs. Systematic investigation of isomerism in covalent organic frameworks (COFs) can provide key insights into their properties. Here, the authors reveal that the constitutional isomerism of the linkage i.e., linkage orientations distinctly impact COFs’ structural and photophysical properties.
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6
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Traxler M, Gisbertz S, Pachfule P, Schmidt J, Roeser J, Reischauer S, Rabeah J, Pieber B, Thomas A. Acridine-Functionalized Covalent Organic Frameworks (COFs) as Photocatalysts for Metallaphotocatalytic C-N Cross-Coupling. Angew Chem Int Ed Engl 2022; 61:e202117738. [PMID: 35188714 PMCID: PMC9400916 DOI: 10.1002/anie.202117738] [Citation(s) in RCA: 38] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Indexed: 12/17/2022]
Abstract
Covalent organic frameworks (COFs) are structurally tuneable, porous and crystalline polymers constructed through the covalent attachment of small organic building blocks as elementary units. Using the myriad of such building blocks, a broad spectrum of functionalities has been applied for COF syntheses for broad applications, including heterogeneous catalysis. Herein, we report the synthesis of a new family of porous and crystalline COFs using a novel acridine linker and benzene‐1,3,5‐tricarbaldehyde derivatives bearing a variable number of hydroxy groups. With the broad absorption in the visible light region, the COFs were applied as photocatalysts in metallaphotocatalytic C−N cross‐coupling. The fully β‐ketoenamine linked COF showed the highest activity, due to the increased charge separation upon irradiation. The COF showed good to excellent yields for several aryl bromides, good recyclability and even catalyzed the organic transformation in presence of green light as energy source.
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Affiliation(s)
- Michael Traxler
- Department of Chemistry/Functional Materials, Technische Universität Berlin, Hardenbergstraße 40, 10623, Berlin, Germany
| | - Sebastian Gisbertz
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476, Potsdam, Germany.,Department of Chemistry and Biochemistry, Freie Universität Berlin, Takustraße 3, 14195, Berlin, Germany
| | - Pradip Pachfule
- Department of Chemistry/Functional Materials, Technische Universität Berlin, Hardenbergstraße 40, 10623, Berlin, Germany.,Department of Chemical, Biological & Macro-Molecular Sciences, S. N. Bose National Centre for Basic Sciences, Kolkata, 700106, India
| | - Johannes Schmidt
- Department of Chemistry/Functional Materials, Technische Universität Berlin, Hardenbergstraße 40, 10623, Berlin, Germany
| | - Jérôme Roeser
- Department of Chemistry/Functional Materials, Technische Universität Berlin, Hardenbergstraße 40, 10623, Berlin, Germany
| | - Susanne Reischauer
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476, Potsdam, Germany.,Department of Chemistry and Biochemistry, Freie Universität Berlin, Takustraße 3, 14195, Berlin, Germany
| | - Jabor Rabeah
- Leibniz Institute for Catalysis (LIKAT Rostock), Universität Rostock, 18059, Rostock, Germany
| | - Bartholomäus Pieber
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476, Potsdam, Germany
| | - Arne Thomas
- Department of Chemistry/Functional Materials, Technische Universität Berlin, Hardenbergstraße 40, 10623, Berlin, Germany
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7
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Alves Fávaro M, Ditz D, Yang J, Bergwinkl S, Ghosh AC, Stammler M, Lorentz C, Roeser J, Quadrelli EA, Thomas A, Palkovits R, Canivet J, Wisser FM. Finding the Sweet Spot of Photocatalysis─A Case Study Using Bipyridine-Based CTFs. ACS Appl Mater Interfaces 2022; 14:14182-14192. [PMID: 35293203 DOI: 10.1021/acsami.1c24713] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Covalent triazine frameworks (CTFs) are a class of porous organic polymers that continuously attract growing interest because of their outstanding chemical and physical properties. However, the control of extended porous organic framework structures at the molecular scale for a precise adjustment of their properties has hardly been achieved so far. Here, we present a series of bipyridine-based CTFs synthesized through polycondensation, in which the sequence of specific building blocks is well controlled. The reported synthetic strategy allows us to tailor the physicochemical features of the CTF materials, including the nitrogen content, the apparent specific surface area, and optoelectronic properties. Based on a comprehensive analytical investigation, we demonstrate a direct correlation of the CTF bipyridine content with the material features such as the specific surface area, band gap, charge separation, and surface wettability with water. The entirety of these parameters dictates the catalytic activity as demonstrated for the photocatalytic hydrogen evolution reaction (HER). The material with the optimal balance between optoelectronic properties and highest hydrophilicity enables HER production rates of up to 7.2 mmol/(h·g) under visible light irradiation and in the presence of a platinum cocatalyst.
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Affiliation(s)
- Marcelo Alves Fávaro
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON - UMR 5256, 2 Avenue Albert Einstein, 69626 Villeurbanne Cedex, France
- Institut für Technische und Makromolekulare Chemie, RWTH Aachen University, Worringerweg 2, 52074 Aachen, Germany
| | - Daniel Ditz
- Institut für Technische und Makromolekulare Chemie, RWTH Aachen University, Worringerweg 2, 52074 Aachen, Germany
| | - Jin Yang
- Fakultät II Institut für Chemie, Technische Universität Berlin, Hardenbergstrasse 40, 10623 Berlin, Germany
| | - Sebastian Bergwinkl
- Institute of Physical and Theoretical Chemistry, University of Regensburg, Universitätsstrasse 31, 93053 Regensburg, Germany
| | - Ashta C Ghosh
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON - UMR 5256, 2 Avenue Albert Einstein, 69626 Villeurbanne Cedex, France
| | - Michael Stammler
- Institute of Inorganic Chemistry, University of Regensburg, Universitätsstrasse 31, 93053 Regensburg, Germany
| | - Chantal Lorentz
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON - UMR 5256, 2 Avenue Albert Einstein, 69626 Villeurbanne Cedex, France
| | - Jérôme Roeser
- Fakultät II Institut für Chemie, Technische Universität Berlin, Hardenbergstrasse 40, 10623 Berlin, Germany
| | - Elsje Alessandra Quadrelli
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON - UMR 5256, 2 Avenue Albert Einstein, 69626 Villeurbanne Cedex, France
| | - Arne Thomas
- Fakultät II Institut für Chemie, Technische Universität Berlin, Hardenbergstrasse 40, 10623 Berlin, Germany
| | - Regina Palkovits
- Institut für Technische und Makromolekulare Chemie, RWTH Aachen University, Worringerweg 2, 52074 Aachen, Germany
| | - Jérôme Canivet
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON - UMR 5256, 2 Avenue Albert Einstein, 69626 Villeurbanne Cedex, France
| | - Florian M Wisser
- Institute of Inorganic Chemistry, University of Regensburg, Universitätsstrasse 31, 93053 Regensburg, Germany
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8
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Traxler M, Gisbertz S, Pachfule P, Schmidt J, Roeser J, Reischauer S, Rabeah J, Pieber B, Thomas A. Acridine‐Functionalized Covalent Organic Frameworks (COFs) as Photocatalysts for Metallaphotocatalytic C−N Cross‐Coupling. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202117738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Michael Traxler
- Department of Chemistry/Functional Materials Technische Universität Berlin Hardenbergstraße 40 10623 Berlin Germany
| | - Sebastian Gisbertz
- Department of Biomolecular Systems Max Planck Institute of Colloids and Interfaces Am Mühlenberg 1 14476 Potsdam Germany
- Department of Chemistry and Biochemistry Freie Universität Berlin Takustraße 3 14195 Berlin Germany
| | - Pradip Pachfule
- Department of Chemistry/Functional Materials Technische Universität Berlin Hardenbergstraße 40 10623 Berlin Germany
- Department of Chemical, Biological & Macro-Molecular Sciences S. N. Bose National Centre for Basic Sciences Kolkata 700106 India
| | - Johannes Schmidt
- Department of Chemistry/Functional Materials Technische Universität Berlin Hardenbergstraße 40 10623 Berlin Germany
| | - Jérôme Roeser
- Department of Chemistry/Functional Materials Technische Universität Berlin Hardenbergstraße 40 10623 Berlin Germany
| | - Susanne Reischauer
- Department of Biomolecular Systems Max Planck Institute of Colloids and Interfaces Am Mühlenberg 1 14476 Potsdam Germany
- Department of Chemistry and Biochemistry Freie Universität Berlin Takustraße 3 14195 Berlin Germany
| | - Jabor Rabeah
- Leibniz Institute for Catalysis (LIKAT Rostock) Universität Rostock 18059 Rostock Germany
| | - Bartholomäus Pieber
- Department of Biomolecular Systems Max Planck Institute of Colloids and Interfaces Am Mühlenberg 1 14476 Potsdam Germany
| | - Arne Thomas
- Department of Chemistry/Functional Materials Technische Universität Berlin Hardenbergstraße 40 10623 Berlin Germany
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9
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Lahnsteiner M, Caldera M, Moura HM, Cerrón-Infantes DA, Roeser J, Konegger T, Thomas A, Menche J, Unterlass MM. Hydrothermal polymerization of porous aromatic polyimide networks and machine learning-assisted computational morphology evolution interpretation. J Mater Chem A Mater 2021; 9:19754-19769. [PMID: 34589226 PMCID: PMC8439099 DOI: 10.1039/d1ta01253c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 08/18/2021] [Indexed: 06/13/2023]
Abstract
We report on the hydrothermal polymerization (HTP) of polyimide (PI) networks using the medium H2O and the comonomers 1,3,5-tris(4-aminophenyl)benzene (TAPB) and pyromellitic acid (PMA). Full condensation is obtained at minimal reaction times of only 2 h at 200 °C. The PI networks are obtained as monoliths and feature thermal stabilities of >500 °C, and in several cases even up to 595 °C. The monoliths are built up by networks of densely packed, near-monodisperse spherical particles and annealed microfibers, and show three types of porosity: (i) intrinsic inter-segment ultramicroporosity (<0.8 nm) of the PI networks composing the particles (∼3-5 μm), (ii) interstitial voids between the particles (0.1-2 μm), and (iii) monolith cell porosity (∽10-100 μm), as studied via low pressure gas physisorption and Hg intrusion porosimetry analyses. This unique hierarchical porosity generates an outstandingly high specific pore volume of 7250 mm3 g-1. A large-scale micromorphological study screening the reaction parameters time, temperature, and the absence/presence of the additive acetic acid was performed. Through expert interpretation of hundreds of scanning electron microscopy (SEM) images of the products of these experiments, we devise a hypothesis for morphology formation and evolution: a monomer salt is initially formed and subsequently transformed to overall eight different fiber, pearl chain, and spherical morphologies, composed of PI and, at long reaction times (>48 h), also PI/SiO2 hybrids that form through reaction with the reaction vessel. Moreover, we have developed a computational image analysis pipeline that deciphers the complex morphologies of these SEM images automatically and also allows for formulating a hypothesis of morphology development in HTP that is in good agreement with the manual morphology analysis. Finally, we upscaled the HTP of PI(TAPB-PMA) and processed the resulting powder into dense cylindrical specimen by green solvent-free warm-pressing, showing that one can follow the full route from the synthesis of these PI networks to a final material without employing harmful solvents.
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Affiliation(s)
- Marianne Lahnsteiner
- Technische Universität Wien, Institute of Materials Chemistry Getreidemarkt 9/165 1060 Vienna Austria
- Technische Universität Wien, Institute of Applied Synthetic Chemistry Getreidemarkt 9/163 1060 Vienna Austria
- CeMM - Research Center for Molecular Medicine of the Austrian Academy of Sciences Lazarettgasse 14, AKH BT 25.3 1090 Vienna Austria
| | - Michael Caldera
- CeMM - Research Center for Molecular Medicine of the Austrian Academy of Sciences Lazarettgasse 14, AKH BT 25.3 1090 Vienna Austria
- Max F. Perutz Labs, Campus Vienna Biocenter 5 Dr.-Bohr-Gasse 9 1030 Vienna Austria
| | - Hipassia M Moura
- Technische Universität Wien, Institute of Materials Chemistry Getreidemarkt 9/165 1060 Vienna Austria
- Technische Universität Wien, Institute of Applied Synthetic Chemistry Getreidemarkt 9/163 1060 Vienna Austria
- CeMM - Research Center for Molecular Medicine of the Austrian Academy of Sciences Lazarettgasse 14, AKH BT 25.3 1090 Vienna Austria
- Universität Konstanz, Department of Chemistry, Solid State Chemistry Universitätsstrasse 10 D-78464 Konstanz Germany
| | - D Alonso Cerrón-Infantes
- Technische Universität Wien, Institute of Materials Chemistry Getreidemarkt 9/165 1060 Vienna Austria
- Technische Universität Wien, Institute of Applied Synthetic Chemistry Getreidemarkt 9/163 1060 Vienna Austria
- CeMM - Research Center for Molecular Medicine of the Austrian Academy of Sciences Lazarettgasse 14, AKH BT 25.3 1090 Vienna Austria
- Universität Konstanz, Department of Chemistry, Solid State Chemistry Universitätsstrasse 10 D-78464 Konstanz Germany
| | - Jérôme Roeser
- Technische Universität Berlin, Institute of Chemistry Str. des 17. Juni 115 10623 Berlin Germany
| | - Thomas Konegger
- Technische Universität Wien, Institute of Chemical Technologies and Analytics Getreidemarkt 9/164 1060 Vienna Austria
| | - Arne Thomas
- Technische Universität Berlin, Institute of Chemistry Str. des 17. Juni 115 10623 Berlin Germany
| | - Jörg Menche
- CeMM - Research Center for Molecular Medicine of the Austrian Academy of Sciences Lazarettgasse 14, AKH BT 25.3 1090 Vienna Austria
- Max F. Perutz Labs, Campus Vienna Biocenter 5 Dr.-Bohr-Gasse 9 1030 Vienna Austria
| | - Miriam M Unterlass
- Technische Universität Wien, Institute of Materials Chemistry Getreidemarkt 9/165 1060 Vienna Austria
- Technische Universität Wien, Institute of Applied Synthetic Chemistry Getreidemarkt 9/163 1060 Vienna Austria
- CeMM - Research Center for Molecular Medicine of the Austrian Academy of Sciences Lazarettgasse 14, AKH BT 25.3 1090 Vienna Austria
- Universität Konstanz, Department of Chemistry, Solid State Chemistry Universitätsstrasse 10 D-78464 Konstanz Germany
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10
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Yang J, Acharjya A, Ye M, Rabeah J, Li S, Kochovski Z, Youk S, Roeser J, Grüneberg J, Penschke C, Schwarze M, Wang T, Lu Y, Krol R, Oschatz M, Schomäcker R, Saalfrank P, Thomas A. Protonated Imine‐Linked Covalent Organic Frameworks for Photocatalytic Hydrogen Evolution. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202104870] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Jin Yang
- Department of Chemistry/ Functional Materials Technische Universität Berlin Hardenbergstraße 40 10623 Berlin Germany
| | - Amitava Acharjya
- Department of Chemistry/ Functional Materials Technische Universität Berlin Hardenbergstraße 40 10623 Berlin Germany
| | - Meng‐Yang Ye
- Department of Chemistry/ Functional Materials Technische Universität Berlin Hardenbergstraße 40 10623 Berlin Germany
| | - Jabor Rabeah
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock Albert-Einstein-Str. 29a 18059 Rostock Germany
| | - Shuang Li
- Department of Chemistry/ Functional Materials Technische Universität Berlin Hardenbergstraße 40 10623 Berlin Germany
| | - Zdravko Kochovski
- Institute of Electrochemical Energy Storage Helmholtz-Zentrum Berlin für Materialien und Energie Hahn-Meitner-Platz 1 14109 Berlin Germany
| | - Sol Youk
- Department of Colloid Chemistry Max-Planck Institute of Colloids and Interfaces Am Mühlenberg 1 14476 Potsdam Germany
| | - Jérôme Roeser
- Department of Chemistry/ Functional Materials Technische Universität Berlin Hardenbergstraße 40 10623 Berlin Germany
| | - Julia Grüneberg
- Department of Chemistry/ Functional Materials Technische Universität Berlin Hardenbergstraße 40 10623 Berlin Germany
| | - Christopher Penschke
- Theoretical Chemistry Institute of Chemistry University of Potsdam Karl-Liebknecht-Str. 24–25 14476 Potsdam Germany
| | - Michael Schwarze
- Department of Chemistry Technische Universität Berlin Straße des 17. Juni 124 10623 Berlin Germany
| | - Tianyi Wang
- Institute for Solar Fuels Helmholtz-Zentrum Berlin für Materialien und Energie Hahn-Meitner-Platz 1 14109 Berlin Germany
| | - Yan Lu
- Institute of Electrochemical Energy Storage Helmholtz-Zentrum Berlin für Materialien und Energie Hahn-Meitner-Platz 1 14109 Berlin Germany
| | - Roel Krol
- Institute for Solar Fuels Helmholtz-Zentrum Berlin für Materialien und Energie Hahn-Meitner-Platz 1 14109 Berlin Germany
| | - Martin Oschatz
- Department of Colloid Chemistry Max-Planck Institute of Colloids and Interfaces Am Mühlenberg 1 14476 Potsdam Germany
| | - Reinhard Schomäcker
- Department of Chemistry Technische Universität Berlin Straße des 17. Juni 124 10623 Berlin Germany
| | - Peter Saalfrank
- Theoretical Chemistry Institute of Chemistry University of Potsdam Karl-Liebknecht-Str. 24–25 14476 Potsdam Germany
| | - Arne Thomas
- Department of Chemistry/ Functional Materials Technische Universität Berlin Hardenbergstraße 40 10623 Berlin Germany
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11
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Yang J, Acharjya A, Ye MY, Rabeah J, Li S, Kochovski Z, Youk S, Roeser J, Grüneberg J, Penschke C, Schwarze M, Wang T, Lu Y, van de Krol R, Oschatz M, Schomäcker R, Saalfrank P, Thomas A. Protonated Imine-Linked Covalent Organic Frameworks for Photocatalytic Hydrogen Evolution. Angew Chem Int Ed Engl 2021; 60:19797-19803. [PMID: 34043858 PMCID: PMC8457210 DOI: 10.1002/anie.202104870] [Citation(s) in RCA: 86] [Impact Index Per Article: 28.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 05/21/2021] [Indexed: 11/30/2022]
Abstract
Covalent organic frameworks (COFs) have emerged as an important class of organic semiconductors and photocatalysts for the hydrogen evolution reaction (HER)from water. To optimize their photocatalytic activity, typically the organic moieties constituting the frameworks are considered and the most suitable combinations of them are searched for. However, the effect of the covalent linkage between these moieties on the photocatalytic performance has rarely been studied. Herein, we demonstrate that donor‐acceptor (D‐A) type imine‐linked COFs can produce hydrogen with a rate as high as 20.7 mmol g−1 h−1 under visible light irradiation, upon protonation of their imine linkages. A significant red‐shift in light absorbance, largely improved charge separation efficiency, and an increase in hydrophilicity triggered by protonation of the Schiff‐base moieties in the imine‐linked COFs, are responsible for the improved photocatalytic performance.
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Affiliation(s)
- Jin Yang
- Department of Chemistry/, Functional Materials, Technische Universität Berlin, Hardenbergstraße 40, 10623, Berlin, Germany
| | - Amitava Acharjya
- Department of Chemistry/, Functional Materials, Technische Universität Berlin, Hardenbergstraße 40, 10623, Berlin, Germany
| | - Meng-Yang Ye
- Department of Chemistry/, Functional Materials, Technische Universität Berlin, Hardenbergstraße 40, 10623, Berlin, Germany
| | - Jabor Rabeah
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Str. 29a, 18059, Rostock, Germany
| | - Shuang Li
- Department of Chemistry/, Functional Materials, Technische Universität Berlin, Hardenbergstraße 40, 10623, Berlin, Germany
| | - Zdravko Kochovski
- Institute of Electrochemical Energy Storage, Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1, 14109, Berlin, Germany
| | - Sol Youk
- Department of Colloid Chemistry, Max-Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476, Potsdam, Germany
| | - Jérôme Roeser
- Department of Chemistry/, Functional Materials, Technische Universität Berlin, Hardenbergstraße 40, 10623, Berlin, Germany
| | - Julia Grüneberg
- Department of Chemistry/, Functional Materials, Technische Universität Berlin, Hardenbergstraße 40, 10623, Berlin, Germany
| | - Christopher Penschke
- Theoretical Chemistry, Institute of Chemistry, University of Potsdam, Karl-Liebknecht-Str. 24-25, 14476, Potsdam, Germany
| | - Michael Schwarze
- Department of Chemistry, Technische Universität Berlin, Straße des 17. Juni 124, 10623, Berlin, Germany
| | - Tianyi Wang
- Institute for Solar Fuels, Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1, 14109, Berlin, Germany
| | - Yan Lu
- Institute of Electrochemical Energy Storage, Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1, 14109, Berlin, Germany
| | - Roel van de Krol
- Institute for Solar Fuels, Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1, 14109, Berlin, Germany
| | - Martin Oschatz
- Department of Colloid Chemistry, Max-Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476, Potsdam, Germany
| | - Reinhard Schomäcker
- Department of Chemistry, Technische Universität Berlin, Straße des 17. Juni 124, 10623, Berlin, Germany
| | - Peter Saalfrank
- Theoretical Chemistry, Institute of Chemistry, University of Potsdam, Karl-Liebknecht-Str. 24-25, 14476, Potsdam, Germany
| | - Arne Thomas
- Department of Chemistry/, Functional Materials, Technische Universität Berlin, Hardenbergstraße 40, 10623, Berlin, Germany
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12
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Krishnaraj C, Sekhar Jena H, Bourda L, Laemont A, Pachfule P, Roeser J, Chandran CV, Borgmans S, Rogge SMJ, Leus K, Stevens CV, Martens JA, Van Speybroeck V, Breynaert E, Thomas A, Van Der Voort P. Strongly Reducing (Diarylamino)benzene-Based Covalent Organic Framework for Metal-Free Visible Light Photocatalytic H 2O 2 Generation. J Am Chem Soc 2020; 142:20107-20116. [PMID: 33185433 PMCID: PMC7705891 DOI: 10.1021/jacs.0c09684] [Citation(s) in RCA: 107] [Impact Index Per Article: 26.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
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Photocatalytic
reduction of molecular oxygen is a promising route
toward sustainable production of hydrogen peroxide (H2O2). This challenging process requires photoactive semiconductors
enabling solar energy driven generation and separation of electrons
and holes with high charge transfer kinetics. Covalent organic frameworks
(COFs) are an emerging class of photoactive semiconductors, tunable
at a molecular level for high charge carrier generation and transfer.
Herein, we report two newly designed two-dimensional COFs based on
a (diarylamino)benzene linker that form a Kagome (kgm) lattice and show strong visible light absorption. Their high crystallinity
and large surface areas (up to 1165 m2·g–1) allow efficient charge transfer and diffusion. The diarylamine
(donor) unit promotes strong reduction properties, enabling these
COFs to efficiently reduce oxygen to form H2O2. Overall, the use of a metal-free, recyclable photocatalytic system
allows efficient photocatalytic solar transformations.
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Affiliation(s)
- Chidharth Krishnaraj
- COMOC - Center for Ordered Materials, Organometallics and Catalysis, Department of Chemistry, Ghent University, Krijgslaan 281-S3, 9000 Ghent, Belgium.,Department of Chemistry/Functional Materials, Technische Universität Berlin, Hardenbergstraße 40, 10623 Berlin, Germany
| | - Himanshu Sekhar Jena
- COMOC - Center for Ordered Materials, Organometallics and Catalysis, Department of Chemistry, Ghent University, Krijgslaan 281-S3, 9000 Ghent, Belgium
| | - Laurens Bourda
- COMOC - Center for Ordered Materials, Organometallics and Catalysis, Department of Chemistry, Ghent University, Krijgslaan 281-S3, 9000 Ghent, Belgium.,XStruct - Bio-Inorganic Chemistry, Department of Chemistry, Ghent University, Krijgslaan 281-S3, 9000 Ghent, Belgium
| | - Andreas Laemont
- COMOC - Center for Ordered Materials, Organometallics and Catalysis, Department of Chemistry, Ghent University, Krijgslaan 281-S3, 9000 Ghent, Belgium
| | - Pradip Pachfule
- Department of Chemistry/Functional Materials, Technische Universität Berlin, Hardenbergstraße 40, 10623 Berlin, Germany
| | - Jérôme Roeser
- Department of Chemistry/Functional Materials, Technische Universität Berlin, Hardenbergstraße 40, 10623 Berlin, Germany
| | - C Vinod Chandran
- NMRCoRe, Celestijnenlaan 200F, Box 2461, 3001 Leuven, Belgium.,Center for Surface Chemistry and Catalysis - Characterisation and Application Team (COK-kat), Department of Microbial and Molecular Systems (M2S), KU Leuven, Celestijnenlaan 200F, Box 2461, 3001 Leuven, Belgium
| | - Sander Borgmans
- Center for Molecular Modeling (CMM), Ghent University, Technologiepark 46, B-9052 Zwijnaarde, Belgium
| | - Sven M J Rogge
- Center for Molecular Modeling (CMM), Ghent University, Technologiepark 46, B-9052 Zwijnaarde, Belgium
| | - Karen Leus
- COMOC - Center for Ordered Materials, Organometallics and Catalysis, Department of Chemistry, Ghent University, Krijgslaan 281-S3, 9000 Ghent, Belgium
| | - Christian V Stevens
- Synthesis, Bioresources and Bioorganic Chemistry Research Group (SynBioC), Department of Green Chemistry and Technology, Ghent University, Coupure Links 653, 9000 Ghent, Belgium
| | - Johan A Martens
- NMRCoRe, Celestijnenlaan 200F, Box 2461, 3001 Leuven, Belgium.,Center for Surface Chemistry and Catalysis - Characterisation and Application Team (COK-kat), Department of Microbial and Molecular Systems (M2S), KU Leuven, Celestijnenlaan 200F, Box 2461, 3001 Leuven, Belgium
| | - Veronique Van Speybroeck
- Center for Molecular Modeling (CMM), Ghent University, Technologiepark 46, B-9052 Zwijnaarde, Belgium
| | - Eric Breynaert
- NMRCoRe, Celestijnenlaan 200F, Box 2461, 3001 Leuven, Belgium.,Center for Surface Chemistry and Catalysis - Characterisation and Application Team (COK-kat), Department of Microbial and Molecular Systems (M2S), KU Leuven, Celestijnenlaan 200F, Box 2461, 3001 Leuven, Belgium
| | - Arne Thomas
- Department of Chemistry/Functional Materials, Technische Universität Berlin, Hardenbergstraße 40, 10623 Berlin, Germany
| | - Pascal Van Der Voort
- COMOC - Center for Ordered Materials, Organometallics and Catalysis, Department of Chemistry, Ghent University, Krijgslaan 281-S3, 9000 Ghent, Belgium
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13
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Acharjya A, Longworth-Dunbar L, Roeser J, Pachfule P, Thomas A. Synthesis of Vinylene-Linked Covalent Organic Frameworks from Acetonitrile: Combining Cyclotrimerization and Aldol Condensation in One Pot. J Am Chem Soc 2020; 142:14033-14038. [PMID: 32678594 DOI: 10.1021/jacs.0c04570] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Combining two or more consecutive reactions in one pot is a common approach for process development, as such a method involves cheap starting materials and allows in situ generation of a reactive intermediate, to undergo further reaction, without isolation. Herein, we report the synthesis of a vinylene-linked (-CH═CH-) covalent organic framework, COF-701, directly from acetonitrile, a cheap commodity solvent, by combining/telescoping two consecutive reactions-cyclotrimerization of nitrile and subsequent aldol condensation with aldehydes-in one pot. Acetonitrile is trimerized to generate protonated 2,4,6-trimethyl-s-triazine tautomers in situ, which undergo Aldol condensation with 4,4'-biphenyldicarbaldehyde in one pot to form crystalline COF-701. COF-701 is obtained as a polycrystalline powder and possesses permanent microporosity and a BET surface area (SABET) of 736 m2·g-1. This strategy can be further extended to generate other porous vinylene-linked frameworks.
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Affiliation(s)
- Amitava Acharjya
- Department of Chemistry/Functional Materials, Technische Universität Berlin, Hardenbergstraße 40, 10623 Berlin, Germany
| | - Lewis Longworth-Dunbar
- Department of Chemistry/Functional Materials, Technische Universität Berlin, Hardenbergstraße 40, 10623 Berlin, Germany
| | - Jérôme Roeser
- Department of Chemistry/Functional Materials, Technische Universität Berlin, Hardenbergstraße 40, 10623 Berlin, Germany
| | - Pradip Pachfule
- Department of Chemistry/Functional Materials, Technische Universität Berlin, Hardenbergstraße 40, 10623 Berlin, Germany
| | - Arne Thomas
- Department of Chemistry/Functional Materials, Technische Universität Berlin, Hardenbergstraße 40, 10623 Berlin, Germany
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14
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Acharjya A, Pachfule P, Roeser J, Schmitt FJ, Thomas A. Vinylene-Linked Covalent Organic Frameworks by Base-Catalyzed Aldol Condensation. Angew Chem Int Ed Engl 2019; 58:14865-14870. [PMID: 31340082 PMCID: PMC6851556 DOI: 10.1002/anie.201905886] [Citation(s) in RCA: 125] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2019] [Revised: 06/25/2019] [Indexed: 01/08/2023]
Abstract
Two 2D covalent organic frameworks (COFs) linked by vinylene (-CH=CH-) groups (V-COF-1 and V-COF-2) are synthesized by exploiting the electron deficient nature of the aromatic s-triazine unit of C3 -symmetric 2,4,6-trimethyl-s-triazine (TMT). The acidic terminal methyl hydrogens of TMT can easily be abstracted by a base, resulting in a stabilized carbanion, which further undergoes aldol condensation with multitopic aryl aldehydes to be reticulated into extended crystalline frameworks (V-COFs). Both V-COF-1 (with terepthalaldehyde (TA)) and V-COF-2 (with 1,3,5-tris(p-formylphenyl)benzene (TFPB)) are polycrystalline and exhibit permanent porosity and BET surface areas of 1341 m2 g-1 and 627 m2 g-1 , respectively. Owing to the close proximity (3.52 Å) of the pre-organized vinylene linkages within adjacent 2D layers stacked in eclipsed fashion, [2+2] photo-cycloadditon in V-COF-1 formed covalent crosslinks between the COF layers.
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Affiliation(s)
- Amitava Acharjya
- Department of Chemistry-Functional Materials, Technische Universität Berlin, Hardenbergstr. 40, BA2, 10623, Berlin, Germany
| | - Pradip Pachfule
- Department of Chemistry-Functional Materials, Technische Universität Berlin, Hardenbergstr. 40, BA2, 10623, Berlin, Germany
| | - Jérôme Roeser
- Department of Chemistry-Functional Materials, Technische Universität Berlin, Hardenbergstr. 40, BA2, 10623, Berlin, Germany
| | - Franz-Josef Schmitt
- Department of Chemistry-Functional Materials, Technische Universität Berlin, Hardenbergstr. 40, BA2, 10623, Berlin, Germany
| | - Arne Thomas
- Department of Chemistry-Functional Materials, Technische Universität Berlin, Hardenbergstr. 40, BA2, 10623, Berlin, Germany
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15
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Pachfule P, Acharjya A, Roeser J, Sivasankaran RP, Ye MY, Brückner A, Schmidt J, Thomas A. Donor-acceptor covalent organic frameworks for visible light induced free radical polymerization. Chem Sci 2019; 10:8316-8322. [PMID: 31762969 PMCID: PMC6855310 DOI: 10.1039/c9sc02601k] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Accepted: 08/01/2019] [Indexed: 12/03/2022] Open
Abstract
Covalent organic frameworks (COFs) are promising materials for applications in photocatalysis, due to their conjugated, porous and chemically stable architectures. Alternating electron donor-acceptor-type structures are known to enhance charge carrier transport mobility and stability in polymers and are therefore also interesting building units for COFs used as photocatalysts but also as photoinitiator. In this work, two donor-acceptor COFs using electron deficient 4,4',4''-(1,3,5-triazine-2,4,6-triyl)trianiline and electron rich thiophene-based thieno[3,2-b]thiophene-2,5-dicarbaldehyde or [2,2'-bithiophene]-5,5'-dicarbaldehyde linkers are presented. The resulting crystalline and porous COFs have been applied as photoinitiator for visible light induced free radical polymerization of methyl methacrylate (MMA) to poly-methyl methacrylate (PMMA). These results pave the way to the development of robust and heterogeneous systems for photochemistry that offers the transfer of radicals induced by visible light.
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Affiliation(s)
- Pradip Pachfule
- Department of Chemistry/Functional Materials , Technische Universität Berlin , Hardenbergstraße 40 , 10623 Berlin , Germany . ;
| | - Amitava Acharjya
- Department of Chemistry/Functional Materials , Technische Universität Berlin , Hardenbergstraße 40 , 10623 Berlin , Germany . ;
| | - Jérôme Roeser
- Department of Chemistry/Functional Materials , Technische Universität Berlin , Hardenbergstraße 40 , 10623 Berlin , Germany . ;
| | - Ramesh P Sivasankaran
- Leibniz Institute for Catalysis , University of Rostock , Albert-Einstein-Str. 29a , 18059 Rostock , Germany
| | - Meng-Yang Ye
- Department of Chemistry/Functional Materials , Technische Universität Berlin , Hardenbergstraße 40 , 10623 Berlin , Germany . ;
| | - Angelika Brückner
- Leibniz Institute for Catalysis , University of Rostock , Albert-Einstein-Str. 29a , 18059 Rostock , Germany
| | - Johannes Schmidt
- Department of Chemistry/Functional Materials , Technische Universität Berlin , Hardenbergstraße 40 , 10623 Berlin , Germany . ;
| | - Arne Thomas
- Department of Chemistry/Functional Materials , Technische Universität Berlin , Hardenbergstraße 40 , 10623 Berlin , Germany . ;
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16
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Acharjya A, Pachfule P, Roeser J, Schmitt F, Thomas A. Vinylene‐Linked Covalent Organic Frameworks by Base‐Catalyzed Aldol Condensation. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201905886] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Amitava Acharjya
- Department of Chemistry-Functional Materials Technische Universität Berlin Hardenbergstr. 40 BA2, 10623 Berlin Germany
| | - Pradip Pachfule
- Department of Chemistry-Functional Materials Technische Universität Berlin Hardenbergstr. 40 BA2, 10623 Berlin Germany
| | - Jérôme Roeser
- Department of Chemistry-Functional Materials Technische Universität Berlin Hardenbergstr. 40 BA2, 10623 Berlin Germany
| | - Franz‐Josef Schmitt
- Department of Chemistry-Functional Materials Technische Universität Berlin Hardenbergstr. 40 BA2, 10623 Berlin Germany
| | - Arne Thomas
- Department of Chemistry-Functional Materials Technische Universität Berlin Hardenbergstr. 40 BA2, 10623 Berlin Germany
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17
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Schwartz PO, Moingeon F, Roeser J, Couzigné E, Voirin E, Masson P, Méry S. Preparation of multi-allylic dendronized polymers via atom-transfer radical polymerization. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.06.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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18
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Fischer S, Roeser J, Lin TC, DeBlock RH, Lau J, Dunn BS, Hoffmann F, Fröba M, Thomas A, Tolbert SH. A Metal–Organic Framework with Tetrahedral Aluminate Sites as a Single‐Ion Li
+
Solid Electrolyte. Angew Chem Int Ed Engl 2018; 57:16683-16687. [DOI: 10.1002/anie.201808885] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 09/24/2018] [Indexed: 11/11/2022]
Affiliation(s)
- Sabrina Fischer
- Department of Chemistry and Biochemistry University of California Los Angeles Los Angeles CA 90095-1569 USA
- Department of Chemistry Technische Universität Berlin, BA2 Hardenbergstraße 40 10623 Berlin Germany
| | - Jérôme Roeser
- Department of Chemistry Technische Universität Berlin, BA2 Hardenbergstraße 40 10623 Berlin Germany
| | - Terri C. Lin
- Department of Chemistry and Biochemistry University of California Los Angeles Los Angeles CA 90095-1569 USA
| | - Ryan H. DeBlock
- Department of Materials Science and Engineering University of California Los Angeles Los Angeles CA 90095-1595 USA
| | - Jonathan Lau
- Department of Materials Science and Engineering University of California Los Angeles Los Angeles CA 90095-1595 USA
| | - Bruce S. Dunn
- Department of Materials Science and Engineering University of California Los Angeles Los Angeles CA 90095-1595 USA
| | - Frank Hoffmann
- Institute of Inorganic and Applied Chemistry University of Hamburg Martin-Luther-King Platz 6 20146 Hamburg Germany
| | - Michael Fröba
- Institute of Inorganic and Applied Chemistry University of Hamburg Martin-Luther-King Platz 6 20146 Hamburg Germany
| | - Arne Thomas
- Department of Chemistry Technische Universität Berlin, BA2 Hardenbergstraße 40 10623 Berlin Germany
| | - Sarah H. Tolbert
- Department of Chemistry and Biochemistry University of California Los Angeles Los Angeles CA 90095-1569 USA
- Department of Materials Science and Engineering University of California Los Angeles Los Angeles CA 90095-1595 USA
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19
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Fischer S, Roeser J, Lin TC, DeBlock RH, Lau J, Dunn BS, Hoffmann F, Fröba M, Thomas A, Tolbert SH. A Metal–Organic Framework with Tetrahedral Aluminate Sites as a Single‐Ion Li
+
Solid Electrolyte. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201808885] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Sabrina Fischer
- Department of Chemistry and Biochemistry University of California Los Angeles Los Angeles CA 90095-1569 USA
- Department of Chemistry Technische Universität Berlin, BA2 Hardenbergstraße 40 10623 Berlin Germany
| | - Jérôme Roeser
- Department of Chemistry Technische Universität Berlin, BA2 Hardenbergstraße 40 10623 Berlin Germany
| | - Terri C. Lin
- Department of Chemistry and Biochemistry University of California Los Angeles Los Angeles CA 90095-1569 USA
| | - Ryan H. DeBlock
- Department of Materials Science and Engineering University of California Los Angeles Los Angeles CA 90095-1595 USA
| | - Jonathan Lau
- Department of Materials Science and Engineering University of California Los Angeles Los Angeles CA 90095-1595 USA
| | - Bruce S. Dunn
- Department of Materials Science and Engineering University of California Los Angeles Los Angeles CA 90095-1595 USA
| | - Frank Hoffmann
- Institute of Inorganic and Applied Chemistry University of Hamburg Martin-Luther-King Platz 6 20146 Hamburg Germany
| | - Michael Fröba
- Institute of Inorganic and Applied Chemistry University of Hamburg Martin-Luther-King Platz 6 20146 Hamburg Germany
| | - Arne Thomas
- Department of Chemistry Technische Universität Berlin, BA2 Hardenbergstraße 40 10623 Berlin Germany
| | - Sarah H. Tolbert
- Department of Chemistry and Biochemistry University of California Los Angeles Los Angeles CA 90095-1569 USA
- Department of Materials Science and Engineering University of California Los Angeles Los Angeles CA 90095-1595 USA
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20
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Yahiaoui O, Fitch AN, Hoffmann F, Fröba M, Thomas A, Roeser J. 3D Anionic Silicate Covalent Organic Framework with srs Topology. J Am Chem Soc 2018; 140:5330-5333. [DOI: 10.1021/jacs.8b01774] [Citation(s) in RCA: 119] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Oussama Yahiaoui
- Department of Chemistry, Technische Universität Berlin, BA2, Hardenbergstraße 40, 10623 Berlin, Germany
| | - Andrew N. Fitch
- European Synchrotron Radiation Facility, CS40220, 38043 Grenoble Cedex 9, France
| | - Frank Hoffmann
- Institute of Inorganic and Applied Chemistry, University of Hamburg, Martin-Luther-King Platz 6, 20146 Hamburg, Germany
| | - Michael Fröba
- Institute of Inorganic and Applied Chemistry, University of Hamburg, Martin-Luther-King Platz 6, 20146 Hamburg, Germany
| | - Arne Thomas
- Department of Chemistry, Technische Universität Berlin, BA2, Hardenbergstraße 40, 10623 Berlin, Germany
| | - Jérôme Roeser
- Department of Chemistry, Technische Universität Berlin, BA2, Hardenbergstraße 40, 10623 Berlin, Germany
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21
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Pachfule P, Acharjya A, Roeser J, Langenhahn T, Schwarze M, Schomäcker R, Thomas A, Schmidt J. Diacetylene Functionalized Covalent Organic Framework (COF) for Photocatalytic Hydrogen Generation. J Am Chem Soc 2018; 140:1423-1427. [DOI: 10.1021/jacs.7b11255] [Citation(s) in RCA: 458] [Impact Index Per Article: 76.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Pradip Pachfule
- Department
of Chemistry/Functional Materials, Technische Universität Berlin, Hardenbergstraße 40, 10623 Berlin, Germany
| | - Amitava Acharjya
- Department
of Chemistry/Functional Materials, Technische Universität Berlin, Hardenbergstraße 40, 10623 Berlin, Germany
| | - Jérôme Roeser
- Department
of Chemistry/Functional Materials, Technische Universität Berlin, Hardenbergstraße 40, 10623 Berlin, Germany
| | - Thomas Langenhahn
- Department
of Chemistry/Functional Materials, Technische Universität Berlin, Hardenbergstraße 40, 10623 Berlin, Germany
| | - Michael Schwarze
- Institut
für Chemie, Technische Universität Berlin, TC 08, Straße des 17. Juni 124, 10623 Berlin, Germany
| | - Reinhard Schomäcker
- Institut
für Chemie, Technische Universität Berlin, TC 08, Straße des 17. Juni 124, 10623 Berlin, Germany
| | - Arne Thomas
- Department
of Chemistry/Functional Materials, Technische Universität Berlin, Hardenbergstraße 40, 10623 Berlin, Germany
| | - Johannes Schmidt
- Department
of Chemistry/Functional Materials, Technische Universität Berlin, Hardenbergstraße 40, 10623 Berlin, Germany
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22
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Roeser J, Prill D, Bojdys MJ, Fayon P, Trewin A, Fitch AN, Schmidt MU, Thomas A. Anionic silicate organic frameworks constructed from hexacoordinate silicon centres. Nat Chem 2017; 9:977-982. [DOI: 10.1038/nchem.2771] [Citation(s) in RCA: 110] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Accepted: 03/21/2017] [Indexed: 12/25/2022]
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Oxenkrug G, Cornicelli J, van der Hart M, Roeser J, Summergrad P. Kynurenic acid, an aryl hydrocarbon receptor ligand, is elevated in serum of Zucker fatty rats. Integr Mol Med 2016; 3:761-763. [PMID: 27738521 PMCID: PMC5058339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Obesity is an increasingly urgent global problem and the molecular mechanisms of obesity are not fully understood. Dysregulation of the tryptophan (Trp) - kynurenine (Kyn) metabolic pathway (TKP) have been suggested as a mechanism of obesity and described in obese humans and in animal models of obesity. However, to the best of our knowledge, TKP metabolism has not been studied in leptin-receptor-deficient Zucker fatty rats (ZFR) (fa/fa), the best-known and most widely used rat model of obesity. We were interested to determine if there are any deviations of TKP in ZFR. Concentrations of major TKP metabolites were evaluated (HPLC- MS method) in serum of ZFR (fa/fa) and age-matched lean rats (FA/-). Concentrations of kynurenic acid (KYNA) were 50% higher in ZFR than in lean rats (p<0.004, Mann-Whitney two-tailed test). Anthranilic acid (AA) concentrations, while elevated by 33%, did not reach statistical significance (p<0.04, one-tailed test). Elevated KYNA serum concentrations might contribute to development of obesity via KYNA-induced activation of aryl hydrocarbon receptor. Present results warrant further studies of KYNA and AA in ZFR and other animal models of obesity.
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Affiliation(s)
- G Oxenkrug
- Department of Psychiatry, Tufts University School of Medicine, Boston, USA,Correspondence to: Oxenkrug G, Department of Psychiatry, Tufts University School of Medicine, Boston, USA,
| | | | | | - J Roeser
- Brains On-Line, S. San Francisco, USA
| | - P Summergrad
- Department of Psychiatry, Tufts University School of Medicine, Boston, USA
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Antonarakis E, Lu C, Wang H, Luber B, Nakazawa M, Roeser J, Chen Y, Fedor H, Lotan T, Zheng Q, De Marzo A, Isaacs J, Isaacs W, Nadal R, Paller C, Denmeade S, Carducci M, Eisenberger M, Luo J. Ar-V7 Splice Variant and Resistance to Enzalutamide and Abiraterone in Men with Metastatic Castration-Resistant Prostate Cancer (Mcrpc): Overall Survival Results. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu438.23] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Roeser J, Heinrich B, Bourgogne C, Rawiso M, Michel S, Hubscher-Bruder V, Arnaud-Neu F, Méry S. Dendronized Polymers with Silver and Mercury Cations Recognition: Complexation Studies and Polyelectrolyte Behavior. Macromolecules 2013. [DOI: 10.1021/ma400348v] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Jérôme Roeser
- Institut de Physique
et Chimie des Matériaux de Strasbourg (IPCMS), Université de Strasbourg, CNRS
UMR 7504, 23 rue du Loess, BP43, 67034 Strasbourg Cedex 02, France
- Institut Pluridisciplinaire
Hubert Curien (IPHC), Université de Strasbourg, CNRS UMR 7178, 25 rue Becquerel, 67087 Strasbourg Cedex 02, France
| | - Benoît Heinrich
- Institut de Physique
et Chimie des Matériaux de Strasbourg (IPCMS), Université de Strasbourg, CNRS
UMR 7504, 23 rue du Loess, BP43, 67034 Strasbourg Cedex 02, France
| | - Cyril Bourgogne
- Institut de Physique
et Chimie des Matériaux de Strasbourg (IPCMS), Université de Strasbourg, CNRS
UMR 7504, 23 rue du Loess, BP43, 67034 Strasbourg Cedex 02, France
| | - Michel Rawiso
- Institut Charles
Sadron (ICS), CNRS UPR 22, Université de Strasbourg, 23 rue du Loess, BP 84047, 67034 Strasbourg Cedex 02, France
| | - Sylvia Michel
- Institut Pluridisciplinaire
Hubert Curien (IPHC), Université de Strasbourg, CNRS UMR 7178, 25 rue Becquerel, 67087 Strasbourg Cedex 02, France
| | - Véronique Hubscher-Bruder
- Institut Pluridisciplinaire
Hubert Curien (IPHC), Université de Strasbourg, CNRS UMR 7178, 25 rue Becquerel, 67087 Strasbourg Cedex 02, France
| | - Françoise Arnaud-Neu
- Institut Pluridisciplinaire
Hubert Curien (IPHC), Université de Strasbourg, CNRS UMR 7178, 25 rue Becquerel, 67087 Strasbourg Cedex 02, France
| | - Stéphane Méry
- Institut de Physique
et Chimie des Matériaux de Strasbourg (IPCMS), Université de Strasbourg, CNRS
UMR 7504, 23 rue du Loess, BP43, 67034 Strasbourg Cedex 02, France
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Motos-Pérez B, Roeser J, Thomas A, Hesemann P. Imidazolium-functionalized SBA-15 type silica: efficient organocatalysts for Henry and cycloaddition reactions. Appl Organomet Chem 2013. [DOI: 10.1002/aoc.2974] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Blanca Motos-Pérez
- Institut Charles Gerhardt de Montpellier; Université de Montpellier 2; 340951 Montpellier France
| | - Jérôme Roeser
- Technische Universität Berlin; Institut für Chemie, Funktionsmaterialen; 106231 Berlin Germany
| | - Arne Thomas
- Technische Universität Berlin; Institut für Chemie, Funktionsmaterialen; 106231 Berlin Germany
| | - Peter Hesemann
- Institut Charles Gerhardt de Montpellier; Université de Montpellier 2; 340951 Montpellier France
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Roeser J, Kailasam K, Thomas A. Covalent triazine frameworks as heterogeneous catalysts for the synthesis of cyclic and linear carbonates from carbon dioxide and epoxides. ChemSusChem 2012; 5:1793-1799. [PMID: 22899343 DOI: 10.1002/cssc.201200091] [Citation(s) in RCA: 128] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2012] [Revised: 07/15/2012] [Indexed: 06/01/2023]
Abstract
The base catalytic properties of a series of triazine-based covalent organic frameworks were evaluated for the conversion of CO₂ to organic carbonates. The high number of basic nitrogen sites of the as-synthesized frameworks efficiently catalyzed the formation of cyclic carbonates via the cycloaddition of CO₂ to different starting epoxides. The structural and chemical tunability of the covalent triazine frameworks allowed the fine evaluation of key parameters influencing the observed catalytic activities. An increased surface area and presence of additional mesopores dramatically enhance the activity of the investigated catalytic materials. The chemical composition was also found to influence the reaction, as evidenced by an increased activity at lower reaction temperatures, when a more basic, pyridine-based, framework was used as catalyst. Finally, the activity in the two-step cycloaddition/transesterification catalysis of dimethyl carbonate was evaluated in a one-batch process.
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Affiliation(s)
- Jérôme Roeser
- Institute of Chemistry, Functional Materials, Technische Universität Berlin, Germany.
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Roeser J, Moingeon F, Heinrich B, Masson P, Arnaud-Neu F, Rawiso M, Méry S. Dendronized Polymers with Peripheral Oligo(ethylene oxide) Chains: Thermoresponsive Behavior and Shape Anisotropy in Solution. Macromolecules 2011. [DOI: 10.1021/ma2016776] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jérôme Roeser
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Université de Strasbourg, CNRS UMR 7504, 23, rue du Loess, BP 43, 67034 Strasbourg cedex 02, France
- Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg, CNRS UMR 7178, 25 rue Becquerel, 67087 Strasbourg cedex 02, France
| | - Firmin Moingeon
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Université de Strasbourg, CNRS UMR 7504, 23, rue du Loess, BP 43, 67034 Strasbourg cedex 02, France
| | - Benoît Heinrich
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Université de Strasbourg, CNRS UMR 7504, 23, rue du Loess, BP 43, 67034 Strasbourg cedex 02, France
| | - Patrick Masson
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Université de Strasbourg, CNRS UMR 7504, 23, rue du Loess, BP 43, 67034 Strasbourg cedex 02, France
| | - Françoise Arnaud-Neu
- Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg, CNRS UMR 7178, 25 rue Becquerel, 67087 Strasbourg cedex 02, France
| | - Michel Rawiso
- Institut Charles Sadron (ICS), UPR 22, CNRS, 23 rue du Loess, BP 84047, 67034 Strasbourg cedex 02, France
| | - Stéphane Méry
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Université de Strasbourg, CNRS UMR 7504, 23, rue du Loess, BP 43, 67034 Strasbourg cedex 02, France
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Roeser J, Reber T, Goos M. Lichtmikroskopischer Nachweis von Lektin-Rezeptoren an der Oberfläche humaner Spermatozoen/Demonstration of Lectin-receptors on the Surface of Human Spermatozoa by Light-microscopy. Andrologia 2009. [DOI: 10.1111/j.1439-0272.1988.tb00699.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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Roeser J, Goebel R. Pränatale sonographische Diagnose multipler kardialer Rhabdomyome. Geburtshilfe Frauenheilkd 2008. [DOI: 10.1055/s-2007-1023129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Moingeon F, Roeser J, Masson P, Arnaud F, Méry S. Versatile and efficient functionalisation of multiallylic dendronised polymers: can dense packing be reached? Chem Commun (Camb) 2008:1341-3. [DOI: 10.1039/b718318f] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Roeser J, Reber T, Goos M. [Light microscopic demonstration of lectin receptors on the surface of human spermatozoa]. Andrologia 1988; 20:338-43. [PMID: 3195727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
The topography of lectin binding sites on human spermatozoa has been examined by using particular series of peroxydase labeled lectin-konjugates (GS-1, GS-2, WGA, PNA, SBA, DBA, BPA, MPA, UEA-1, LPA, Con-A) which demonstrated typical patterns of lectin-receptor distributions concerning acrosomal and equatorial as well as postacrosomal areas.
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Abstract
A genetic recombination system in Streptomyces bikiniensis var. zorbonensis is described. This strain produces a mixture of antibiotics including zorbamycin and zorbonomycin B and C. A genetic map has been constructed from data obtained from an analysis of haploid recombinants which shows linkage relationships of 17 marker loci. Determination of map location has been made for three different loci affecting antibiotic biosynthesis in this strain.
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Roeser J, Gentaz R. [Cervical spinal lesions in wrestlers]. J Radiol Electrol Med Nucl 1969; 50:699-702. [PMID: 5401252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Layani F, Roeser J. [Local injections of delta-hydrocortisone in rheumatology]. Sem Hop 1958; 34:2239-41. [PMID: 13592347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/23/2023]
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