Bimetallic docked covalent organic frameworks with high catalytic performance towards coupling/oxidation cascade reactions

Li, Yaling; Zuo, Kaiming; Gao, Tingjun; Wu, Jifeng; Su, Xiaofang; Zeng, Chaoyuan; Xu, Huanjun; Hu, Hui; Zhang, Xiaosong; Gao, Yanan

doi:10.1039/d1ra05315a

Cited by 14 publications

(13 citation statements)

References 56 publications

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“…However, the two peaks in the N1s spectrum shifted towards higher energy region which indicates that the Cr metal is co-ordinated to the MT-POF via CrÀ N bonds. [86] Appearance of weak signal at 407.7 eV can be attributed to the N1s of NO 3 À anion (Figure 6c, inset). [87,88] Successful metalation of MT-POF with Cr(III) can be ascertained from the peaks at 577 and 587 eV that correspond to the Cr 3 + 2p3/2 and Cr 3 + 2p1/2, respectively (Figure 6d).…”

Section: Characterizationmentioning

confidence: 98%

Title: Cr(III) Incorporated Melamine‐Terephthalaldehyde Porous Organic Framework Nanosheet Catalyst for Carbon Dioxide Fixation Reaction

et al. 2023

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Cr(III) centers have been incorporated into melamine‐terephthalaldehyde porous organic framework (MT‐POF) through N‐donor site coordination. Morphological studies by SEM give evidence of the transformation of spherulitic texture of non‐metalated MT‐POF to aggregated platelike structure in chromium metalated POF, MT‐Cr(III) POF (bulk). The flattening in the surface morphology of bulk MT‐Cr(III) POF might be a consequence of conformational change in POF caused by the template effect of the Cr(III) coordination. On sonication, bulk MT‐Cr(III) POF transformed into a distinguishable stacked nanosheet structure in MT‐Cr(III) POFN as revealed by FE‐SEM and TEM images. MT‐Cr(III) POFN could catalyse the carbon dioxide cycloaddition reaction to epoxides to yield cyclic carbonates in presence of tetrabutylammonium bromide (TBAB) co‐catalyst. It was found that bulkier epoxide substrates showed lesser conversions to their corresponding cyclic carbonates (styrene oxide, 41 %; allyl glycidyl ether, 70 %; butyl glycidyl ether, 63 % conv.), whereas smaller substrates showed much higher conversions (epichlorohydrin, 96 %; epibromohydrin, 95 % conv.) under the reaction conditions [MT‐Cr(III) POFN, 10 mg; TBAB, 2 mol%; 5 bar CO2; 60 °C] giving a clear evidence of the substrate discrimination. The reason for the lesser conversions of the bigger substrates can be attributed to the steric clash rendered by the POF network.

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Section: Characterizationmentioning

confidence: 98%

Title: Cr(III) Incorporated Melamine‐Terephthalaldehyde Porous Organic Framework Nanosheet Catalyst for Carbon Dioxide Fixation Reaction

et al. 2023

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“…Thereafter, the same group reported additional heterobimetallic Pd( ii )/Cu( ii )@TADP-COF which can catalyse a coupling–oxidation cascade reaction in water. 697…”

Section: Application Of Metalated Cofsmentioning

confidence: 99%

Metalated covalent organic frameworks: from synthetic strategies to diverse applications

2022

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“…The yield of the C-S cleavage reaction was recorded up to 76%, and this was kept during five recycle tests (Figure 9c). Li et al [80] reported bimetallic porphyrin COFs that enabled a cascade reaction. The authors synthesized COFs by Schiff reaction of porphyrins with two different linear struts, resulting in M-COF composed of β-hydroxy imine and simple imine linkages.…”

Section: Catalytic M-cofs For Chemical Transformationsmentioning

confidence: 99%

“…Li et al. [ 80 ] reported bimetallic porphyrin COFs that enabled a cascade reaction. The authors synthesized COFs by Schiff reaction of porphyrins with two different linear struts, resulting in M‐COF composed of β‐hydroxy imine and simple imine linkages.…”

Section: Properties and Applicationsmentioning

confidence: 99%

Macrocycle‐Based Covalent Organic Frameworks

et al. 2023

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Macrocycles with well‐defined cavities and the ability to undergo supramolecular interactions are classical materials that have played an essential role in materials science. However, one of the most substantial barriers limiting the utilization of macrocycles is their aggregation, which blocks the active regions. Among many attempted strategies to prevent such aggregation, installing macrocycles into covalent organic frameworks (COFs), which are porous and stable reticular networks, has emerged as an ideal solution. The resulting macrocycle‐based COFs (M‐COFs) preserve the macrocycles’ unique activities, enabling applications in various fields such as single‐atom catalysis, adsorption/separation, optoelectronics, phototherapy, and structural design of forming single‐layered or mechanically interlocked COFs. The resulting properties are unmatchable by any combination of macrocycles with other substrates, opening a new chapter in advanced materials. This review focuses on the latest progress in the concepts, synthesis, properties, and applications of M‐COFs, and presents an in‐depth outlook on the challenges and opportunities in this emerging field.

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Bimetallic docked covalent organic frameworks with high catalytic performance towards coupling/oxidation cascade reactions

Abstract: Cu(ii) and Pd(ii) ions were selectively coordinated within an imine-linked 2D COF that exhibited good catalytic performance towards a one-pot Suzuki coupling/oxidation cascade reaction.

Cited by 14 publications

References 56 publications

Title: Cr(III) Incorporated Melamine‐Terephthalaldehyde Porous Organic Framework Nanosheet Catalyst for Carbon Dioxide Fixation Reaction

Title: Cr(III) Incorporated Melamine‐Terephthalaldehyde Porous Organic Framework Nanosheet Catalyst for Carbon Dioxide Fixation Reaction

Metalated covalent organic frameworks: from synthetic strategies to diverse applications

Macrocycle‐Based Covalent Organic Frameworks

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