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Wilm LFB, Das M, Janssen‐Müller D, Mück‐Lichtenfeld C, Glorius F, Dielmann F. Photoschaltbare Stickstoff‐Superbasen: Mit Licht Kohlenstoffdioxid reversibel fixieren. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202112344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Lukas F. B. Wilm
- Institut für Anorganische und Analytische Chemie Westfälische Wilhelms-Universität Münster Corrensstrasse 28–30 48149 Münster Deutschland
| | - Mowpriya Das
- Institut für Organische Chemie Westfälische Wilhelms-Universität Münster Corrensstrasse 36 48149 Münster Deutschland
| | - Daniel Janssen‐Müller
- Institut für Organische Chemie Westfälische Wilhelms-Universität Münster Corrensstrasse 36 48149 Münster Deutschland
| | - Christian Mück‐Lichtenfeld
- Institut für Organische Chemie Westfälische Wilhelms-Universität Münster Corrensstrasse 36 48149 Münster Deutschland
| | - Frank Glorius
- Institut für Organische Chemie Westfälische Wilhelms-Universität Münster Corrensstrasse 36 48149 Münster Deutschland
| | - Fabian Dielmann
- Institut für Anorganische und Analytische Chemie Westfälische Wilhelms-Universität Münster Corrensstrasse 28–30 48149 Münster Deutschland
- Institut für Allgemeine Anorganische und Theoretische Chemie Leopold-Franzens-Universität Innsbruck Innrain 80–82 6020 Innsbruck Österreich
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Wilm LFB, Das M, Janssen‐Müller D, Mück‐Lichtenfeld C, Glorius F, Dielmann F. Photoswitchable Nitrogen Superbases: Using Light for Reversible Carbon Dioxide Capture. Angew Chem Int Ed Engl 2022; 61:e202112344. [PMID: 34694044 PMCID: PMC9299603 DOI: 10.1002/anie.202112344] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Indexed: 12/23/2022]
Abstract
Using light as an external stimulus to alter the reactivity of Lewis bases is an intriguing tool for controlling chemical reactions. Reversible photoreactions associated with pronounced reactivity changes are particularly valuable in this regard. We herein report the first photoswitchable nitrogen superbases based on guanidines equipped with a photochromic dithienylethene unit. The resulting N-heterocyclic imines (NHIs) undergo reversible, near quantitative electrocyclic isomerization upon successive exposure to UV and visible irradiation, as demonstrated over multiple cycles. Switching between the ring-opened and ring-closed states is accompanied by substantial pKa shifts of the NHIs by up to 8.7 units. Since only the ring-closed isomers are sufficiently basic to activate CO2 via the formation of zwitterionic Lewis base adducts, cycling between the two isomeric states enables the light-controlled capture and release of CO2 .
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Affiliation(s)
- Lukas F. B. Wilm
- Institute of Inorganic and Analytical ChemistryWestfälische Wilhelms-Universität MünsterCorrensstrasse 28–3048149MünsterGermany
| | - Mowpriya Das
- Institute of Organic ChemistryWestfälische Wilhelms-Universität MünsterCorrensstrasse 3648149MünsterGermany
| | - Daniel Janssen‐Müller
- Institute of Organic ChemistryWestfälische Wilhelms-Universität MünsterCorrensstrasse 3648149MünsterGermany
| | - Christian Mück‐Lichtenfeld
- Institute of Organic ChemistryWestfälische Wilhelms-Universität MünsterCorrensstrasse 3648149MünsterGermany
| | - Frank Glorius
- Institute of Organic ChemistryWestfälische Wilhelms-Universität MünsterCorrensstrasse 3648149MünsterGermany
| | - Fabian Dielmann
- Institute of Inorganic and Analytical ChemistryWestfälische Wilhelms-Universität MünsterCorrensstrasse 28–3048149MünsterGermany
- Institute of General, Inorganic and Theoretical ChemistryLeopold-Franzens-Universität InnsbruckInnrain 80–826020InnsbruckAustria
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Das M, Khullar S, Sarkar M. Increased Photocatalytic Activity of Post Synthetically Modified Coordination Polymer Derived from Bis‐pyridyldiamide. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000450] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Moyna Das
- Department of Chemistry Birla Institute of Technology and Science Pilani Campus 333031 Pilani Rajasthan India
| | - Sadhika Khullar
- Department of Chemistry Dr B R Ambedkar National Institute of Technology Jalandhar 144011 Jalandhar Punjab India
| | - Madhushree Sarkar
- Department of Chemistry Birla Institute of Technology and Science Pilani Campus 333031 Pilani Rajasthan India
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Yang L, Qian S, Wang X, Cui X, Chen B, Xing H. Energy-efficient separation alternatives: metal–organic frameworks and membranes for hydrocarbon separation. Chem Soc Rev 2020; 49:5359-5406. [DOI: 10.1039/c9cs00756c] [Citation(s) in RCA: 194] [Impact Index Per Article: 48.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The diversity of metal–organic frameworks enables the design of highly efficient adsorbents and membranes towards hydrocarbon separations for energy consumption mitigation.
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Affiliation(s)
- Lifeng Yang
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education
- Department of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Siheng Qian
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education
- Department of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Xiaobing Wang
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education
- Department of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Xili Cui
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education
- Department of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Banglin Chen
- Department of Chemistry
- University of Texas at San Antonio
- San Antonio
- USA
| | - Huabin Xing
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education
- Department of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou 310027
- China
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Yang X, Zhou HL, He CT, Mo ZW, Ye JW, Chen XM, Zhang JP. Flexibility of Metal-Organic Framework Tunable by Crystal Size at the Micrometer to Submillimeter Scale for Efficient Xylene Isomer Separation. RESEARCH 2019; 2019:9463719. [PMID: 31922147 PMCID: PMC6946284 DOI: 10.34133/2019/9463719] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Accepted: 08/17/2019] [Indexed: 11/16/2022]
Abstract
Understanding, controlling, and utilizing the flexibility of adsorbents are of great importance and difficulty. Analogous with conventional solid materials, downsizing to the nanoscale is emerging as a possible strategy for controlling the flexibility of porous coordination polymers (or metal-organic frameworks). We report a unique flexibility controllable by crystal size at the micrometer to submillimeter scale. Template removal transforms [Cu2(pypz)2]·0.5p-xylene (MAF-36, Hpypz = 4-(1H-pyrazol-4-yl)pyridine) with one-dimensional channels to α-[Cu2(pypz)2] with discrete small cavities, and further heating gives a nonporous isomer β-[Cu2(pypz)2]. Both isomers can adsorb p-xylene to give [Cu2(pypz)2]·0.5p-xylene, meaning the coexistence of guest-driven flexibility and shape-memory behavior. The phase transition temperature from α-[Cu2(pypz)2] to β-[Cu2(pypz)2] decreased from ~270°C to ~150°C by increasing the crystal size from the micrometer to the submillimeter scale, ca. 2-3 orders larger than those of other size-dependent behaviors. Single-crystal X-ray diffraction showed coordination bond reconstitution and chirality inversion mechanisms for the phase transition, which provides a sufficiently high energy barrier to stabilize the metastable phase without the need of downsizing to the nanoscale. By virtue of the crystalline molecular imprinting and gate-opening effects, α-[Cu2(pypz)2] and β-[Cu2(pypz)2] show unprecedentedly high p-xylene selectivities of 16 and 51, respectively, as well as ultrafast adsorption kinetics (<2 minutes), for xylene isomers.
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Affiliation(s)
- Xiao Yang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Hao-Long Zhou
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Chun-Ting He
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Zong-Wen Mo
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Jia-Wen Ye
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Xiao-Ming Chen
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Jie-Peng Zhang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
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Kim SY, Yoon TU, Kang JH, Kim AR, Kim TH, Kim SI, Park W, Kim KC, Bae YS. Observation of Olefin/Paraffin Selectivity in Azo Compound and Its Application into a Metal-Organic Framework. ACS APPLIED MATERIALS & INTERFACES 2018; 10:27521-27530. [PMID: 30040880 DOI: 10.1021/acsami.8b09739] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Olefin/paraffin separation is an important and challenging issue because the two molecules have similar physicochemical properties. Although a couple of olefin adsorbents have been developed by introducing inorganic nanoparticles into metal-organic frameworks (MOFs), there has been no study on the development of an olefin adsorbent by introducing a certain organic functional group into a MOF. In this study, we posited that azo compounds could offer olefin/paraffin selectivity. We have revealed using first-principles calculations that the simplest aromatic azo compound (azobenzene, Azob) has an unusual propylene/propane selectivity due to special electrostatic interactions between Azob and propylene molecules. On the basis of this interesting discovery, we have synthesized a novel propylene adsorbent, MIL-101(Cr)_DAA, by grafting 4,4'-diaminoazobenzene (DAA) into open metal sites in a mesoporous MIL-101(Cr). Remarkably, MIL-101(Cr)_DAA exhibited enhanced propylene/propane selectivity as well as considerably higher propylene heat of adsorption compared to pristine MIL-101(Cr) while maintaining the high working capacity of MIL-101(Cr). This clearly indicates that azo compounds when introduced into MOFs can provide propylene selectivity. Moreover, MIL-101(Cr)_DAA showed good C3H6/C3H8 separation and easy regeneration performances from packed-bed breakthrough experiments and retained its propylene adsorption capacity even after exposure to air for 12 h. As far as we know, this is the first study that improves the olefin selectivity of MOF by postsynthetically introducing an organic functional group.
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Affiliation(s)
- Seo-Yul Kim
- Department of Chemical and Biomolecular Engineering , Yonsei University , 50 Yonsei-ro , Seodaemun-gu, Seoul 03722 , Korea
| | - Tae-Ung Yoon
- Department of Chemical and Biomolecular Engineering , Yonsei University , 50 Yonsei-ro , Seodaemun-gu, Seoul 03722 , Korea
| | - Jo Hong Kang
- Department of Chemical and Biomolecular Engineering , Yonsei University , 50 Yonsei-ro , Seodaemun-gu, Seoul 03722 , Korea
| | - Ah-Reum Kim
- Department of Chemical and Biomolecular Engineering , Yonsei University , 50 Yonsei-ro , Seodaemun-gu, Seoul 03722 , Korea
| | - Tea-Hoon Kim
- Department of Chemical and Biomolecular Engineering , Yonsei University , 50 Yonsei-ro , Seodaemun-gu, Seoul 03722 , Korea
| | - Seung-Ik Kim
- Department of Chemical and Biomolecular Engineering , Yonsei University , 50 Yonsei-ro , Seodaemun-gu, Seoul 03722 , Korea
| | - Wanje Park
- Department of Chemical and Biomolecular Engineering , Yonsei University , 50 Yonsei-ro , Seodaemun-gu, Seoul 03722 , Korea
| | - Ki Chul Kim
- Department of Chemical Engineering , Konkuk University , Seoul 05029 , Republic of Korea
| | - Youn-Sang Bae
- Department of Chemical and Biomolecular Engineering , Yonsei University , 50 Yonsei-ro , Seodaemun-gu, Seoul 03722 , Korea
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Yang Y, Bai P, Guo X. Separation of Xylene Isomers: A Review of Recent Advances in Materials. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b03127] [Citation(s) in RCA: 138] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yuxi Yang
- Department of Pharmaceutical
Engineering, School of Chemical Engineering and Technology, and Key Laboratory of Systems Bioengineering, Ministry
of Education, Tianjin University, Tianjin 300350, China
| | - Peng Bai
- Department of Pharmaceutical
Engineering, School of Chemical Engineering and Technology, and Key Laboratory of Systems Bioengineering, Ministry
of Education, Tianjin University, Tianjin 300350, China
| | - Xianghai Guo
- Department of Pharmaceutical
Engineering, School of Chemical Engineering and Technology, and Key Laboratory of Systems Bioengineering, Ministry
of Education, Tianjin University, Tianjin 300350, China
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