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Chen W, Fan WY, Sohail M, Madrahimov ST, Bengali AA. Solubilizing Metal-Organic Frameworks for an In Situ IR-SEC Study of a CO 2 Reduction Catalyst. ACS APPLIED MATERIALS & INTERFACES 2023; 15:16593-16597. [PMID: 36943895 PMCID: PMC10848202 DOI: 10.1021/acsami.2c20157] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 03/09/2023] [Indexed: 06/18/2023]
Abstract
Metal-organic frameworks (MOFs) are typically assembled by bridging metal centers with organic linkers for various applications, including providing robust support for heterogeneous catalysts for CO2 reduction. In this study, we have demonstrated the solubilization of a MOF tethered to a CO2-reducing electrocatalyst and studied its fundamental electrochemistry in THF solvent using infrared spectroelectrochemistry (IR-SEC). The fundamental electrochemical properties of this immobilized catalyst were compared to that of its homogeneous counterpart. This approach provides a foundation for future experimental studies to bridge the gap between homogeneous and heterogeneous electrocatalysis.
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Affiliation(s)
- Wenmiao Chen
- Division
of Arts and Sciences, Texas A&M University
Qatar, PO Box 23874, Education City, Doha, Qatar
- Department
of Chemistry, Texas A&M University, Galveston, Texas 77553, United States
| | - Wai Yip Fan
- National
University of Singapore, Singapore 119077, Singapore
| | - Muhammad Sohail
- Division
of Arts and Sciences, Texas A&M University
Qatar, PO Box 23874, Education City, Doha, Qatar
| | - Sherzod T. Madrahimov
- Division
of Arts and Sciences, Texas A&M University
Qatar, PO Box 23874, Education City, Doha, Qatar
| | - Ashfaq A. Bengali
- Division
of Arts and Sciences, Texas A&M University
Qatar, PO Box 23874, Education City, Doha, Qatar
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Mamlouk H, Elumalai P, Kumar MP, Aidoudi FH, Bengali AA, Madrahimov ST. In Situ Solution-State Characterization of MOF-Immobilized Transition-Metal Complexes by Infrared Spectroscopy. ACS APPLIED MATERIALS & INTERFACES 2020; 12:3171-3178. [PMID: 31829551 DOI: 10.1021/acsami.9b18099] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Transition-metal catalysts immobilized on the surface of Metal-organic frameworks (MOFs) are being utilized for an ever-increasing number of reactions ranging from couplings to olefin oligomerization. While these reactions are usually performed in solution, unlike their homogeneous counterparts, the insolubility of the MOF systems makes it difficult to obtain detailed mechanistic information by in situ spectroscopic analysis in solution. In this report, we present a synthetic method to solubilize these systems by grafting oligomers on the surface of the MOF particles, making it possible to characterize these species by transmission infrared (IR) spectroscopy. The fundamental photochemistry of these catalysts was also studied and compared to that of their homogeneous counterparts. This work establishes a proof of principle for in-solution monitoring of heterogeneous catalysts.
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Affiliation(s)
- Hind Mamlouk
- Science Department , Texas A&M University at Qatar , Texas A&M Engineering Building , Education City, P. O. Box 23874, Doha , Qatar
| | - Palani Elumalai
- Science Department , Texas A&M University at Qatar , Texas A&M Engineering Building , Education City, P. O. Box 23874, Doha , Qatar
| | - Manyam Praveen Kumar
- Science Department , Texas A&M University at Qatar , Texas A&M Engineering Building , Education City, P. O. Box 23874, Doha , Qatar
| | - Farida H Aidoudi
- Science Department , Texas A&M University at Qatar , Texas A&M Engineering Building , Education City, P. O. Box 23874, Doha , Qatar
| | - Ashfaq A Bengali
- Science Department , Texas A&M University at Qatar , Texas A&M Engineering Building , Education City, P. O. Box 23874, Doha , Qatar
| | - Sherzod T Madrahimov
- Science Department , Texas A&M University at Qatar , Texas A&M Engineering Building , Education City, P. O. Box 23874, Doha , Qatar
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Affiliation(s)
- Christopher B. Watson
- Texas A&M University, Department of Chemistry, P.O. Box 30012, College Station, Texas 77842-3012, United States
| | - Dustin Tan
- Texas A&M University, Department of Chemistry, P.O. Box 30012, College Station, Texas 77842-3012, United States
| | - David E. Bergbreiter
- Texas A&M University, Department of Chemistry, P.O. Box 30012, College Station, Texas 77842-3012, United States
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Malinski TJ, Bazzi HS, Bergbreiter DE. Sustainable Hydrocarbon Oligomer Solvent Systems for Sequestration of Trace Organics from Water. CHEMSUSCHEM 2019; 12:416-419. [PMID: 30548209 DOI: 10.1002/cssc.201802851] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Indexed: 06/09/2023]
Abstract
Low-viscosity poly(α-olefin)s (PAOs) either alone or with functional hydrocarbon oligomer cosolvents are nontoxic, nonvolatile, recyclable solvent systems that effectively and efficiently sequester trace amounts of nonpolar organic compounds such as benzene and halogenated organics from water. More polar compounds including perfluorooctanoic acid and nitrobenzene or water-miscible compounds such as THF and triethylamine can also be sequestered if the PAO phase contains an H-bonding PAO-anchored cosolvent.
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Affiliation(s)
- Thomas J Malinski
- Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, TX, 77842-3012, USA
| | - Hassan S Bazzi
- Department of Chemistry, Texas A&M University at Qatar, P.O. Box 23874, Doha, Qatar
| | - David E Bergbreiter
- Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, TX, 77842-3012, USA
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Shiman DI, Vasilenko IV, Kostjuk SV. Alkoxy aluminum chlorides in the cationic polymerization of isobutylene: a co-initiator, carbocation stabilizer and chain-transfer agent. Polym Chem 2019. [DOI: 10.1039/c9py01317b] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Alkoxy aluminum chlorides are efficient catalysts for the preparation of well-defined exo-olefin terminated PIBs of low (Mn ∼ 1000 g mol−1) to medium (Mn up to 50 000 g mol−1) molecular weight under mild experimental conditions.
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Affiliation(s)
- Dmitriy I. Shiman
- Research Institute for Physical Chemical Problems of the Belarusian State University
- Minsk
- Belarus
| | - Irina V. Vasilenko
- Research Institute for Physical Chemical Problems of the Belarusian State University
- Minsk
- Belarus
| | - Sergei V. Kostjuk
- Research Institute for Physical Chemical Problems of the Belarusian State University
- Minsk
- Belarus
- Sechenov First Moscow State Medical University
- Institute for Regenerative Medicine
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Samunual P, Bergbreiter DE. SN2 Reactions in Hydrocarbon Solvents Using Ammonium-Terminated Polyisobutylene Oligomers as Phase-Solubilizing Agents and Catalysts. J Org Chem 2018; 83:11101-11107. [DOI: 10.1021/acs.joc.8b01718] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Peerada Samunual
- Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Texas 77842-3012, United States
| | - David E. Bergbreiter
- Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Texas 77842-3012, United States
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Mamlouk H, Suriboot J, Manyam PK, AlYazidi A, Bergbreiter DE, Madrahimov ST. Highly active, separable and recyclable bipyridine iridium catalysts for C–H borylation reactions. Catal Sci Technol 2018. [DOI: 10.1039/c7cy01641g] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Iridium complexes generated from Ir(i) precursors and PIB oligomer functionalized bpy ligands efficiently catalyzed the reaction of arenes with bis(pinacolato)diboron under mild conditions to produce a variety of arylboronate compounds.
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Affiliation(s)
- Hind Mamlouk
- Department of Chemistry
- Texas A&M University at Qatar
- Doha
- Qatar
| | | | | | - Ahmed AlYazidi
- Department of Chemistry
- Texas A&M University at Qatar
- Doha
- Qatar
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Suárez-García S, Sedó J, Saiz-Poseu J, Ruiz-Molina D. Copolymerization of a Catechol and a Diamine as a Versatile Polydopamine-Like Platform for Surface Functionalization: The Case of a Hydrophobic Coating. Biomimetics (Basel) 2017; 2:biomimetics2040022. [PMID: 31105183 PMCID: PMC6352694 DOI: 10.3390/biomimetics2040022] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Revised: 11/02/2017] [Accepted: 11/07/2017] [Indexed: 11/16/2022] Open
Abstract
The covalent functionalization of surfaces with molecules capable of providing new properties to the treated substrate, such as hydrophobicity or bioactivity, has been attracting a lot of interest in the last decades. For achieving this goal, the generation of a universally functionalizable primer coating in one-pot reaction and under relatively mild conditions is especially attractive due to its potential versatility and ease of application. The aim of the present work is to obtain such a functionalizable coating by a cross-linking reaction between pyrocatechol and hexamethylenediamine (HDMA) under oxidizing conditions. For demonstrating the efficacy of this approach, different substrates (glass, gold, silicon, and fabric) have been coated and later functionalized with two different alkylated species (1-hexadecanamine and stearoyl chloride). The success of their attachment has been demonstrated by evaluating the hydrophobicity conferred to the surface by contact angle measurements. Interestingly, these results, together with its chemical characterization by means of X-ray photoelectron spectroscopy (XPS) and Fourier-transform infrared spectroscopy (FT-IR), have proven that the reactivity of the primer coating towards the functionalizing agent can be tuned in function of its generation time.
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Affiliation(s)
- Salvio Suárez-García
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193 Barcelona, Spain.
| | - Josep Sedó
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193 Barcelona, Spain.
| | - Javier Saiz-Poseu
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193 Barcelona, Spain.
| | - Daniel Ruiz-Molina
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193 Barcelona, Spain.
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Balogh J, Hlil AR, El-Zoghbi I, Rafique MG, Chouikhi D, Al-Hashimi M, Bazzi HS. Phase-Separable Polyisobutylene Palladium-PEPPSI Precatalysts: Synthesis and Application in Buchwald-Hartwig Amination. Macromol Rapid Commun 2017. [DOI: 10.1002/marc.201700214] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Janos Balogh
- Department of Chemistry; Texas A&M University at Qatar; P. O. Box 23874 Doha Qatar
| | - Antsar Rih Hlil
- Department of Chemistry; Texas A&M University at Qatar; P. O. Box 23874 Doha Qatar
| | - Ibrahim El-Zoghbi
- Department of Chemistry; Texas A&M University at Qatar; P. O. Box 23874 Doha Qatar
| | | | - Dalila Chouikhi
- Department of Chemistry; Texas A&M University at Qatar; P. O. Box 23874 Doha Qatar
| | - Mohammed Al-Hashimi
- Department of Chemistry; Texas A&M University at Qatar; P. O. Box 23874 Doha Qatar
| | - Hassan S. Bazzi
- Department of Chemistry; Texas A&M University at Qatar; P. O. Box 23874 Doha Qatar
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