Green mechanochemical synthesis of imine-linked covalent organic frameworks for high iodine capture

Brown, Normanda; Alsudairy, Ziad; Behera, Ranjan; Akram, Fazli; Chen, Kuangcai; Smith-Petty, Kayla; Motley, Bria; Williams, Spirit; Huang, Wenyu; Ingram, Conrad; Li, Xinle

doi:10.1039/d3gc01927f

Cited by 29 publications

(7 citation statements)

References 58 publications

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“…It has been shown in the literature that the pore volume of the framework material determines the iodine capture capacity of COF materials. − The COF isomers we obtained not only have different crystal structures but also have very different conjugated structures, pore environments, and pore sizes. Surprisingly, after the iodine capture experiment, it is not difficult to see that whether it is AA-stacked TAPT-TFPA COF, inclined-stacked TAPT-TFPA COF, or TAPA-TFPT COF, they show basically the same iodine capture ability.…”

Section: Resultsmentioning

confidence: 85%

Two-Dimensional Covalent Organic Framework Isomers Induce Different Properties

Guo,

Li,

Shao

2023

ACS Appl. Electron. Mater.

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Covalent organic frameworks (COFs) are attractive due to their predictable and tailored periodic frameworks. In the past decades, great efforts have been devoted to crystallinity control, modulation of pores, and so on; however, less attention has been given to atomic-level structural changes. This work provides a fundamental study to further understand the relationship between the periodic structures of the COFs and their unique properties. We explore the relationship of structural isomer linkages in two COFs (TAPT-TFPA and TAPA-TFPT COF). The crystal structures, stacking patterns, pore properties, optical properties, and adsorption properties of these imine-based COFs have been extensively studied and compared. Our results show that compared with TAPA-TFPT COF, TAPT-TFPA COF has superior crystallinity, reversible stacking regulation, and a significant blue shift of UV−vis absorption. These findings provide evidence that monomer pairs must be carefully considered when designing framework materials as these small structural changes can lead to large differences in properties.

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Section: Resultsmentioning

confidence: 85%

Two-Dimensional Covalent Organic Framework Isomers Induce Different Properties

Guo,

Li,

Shao

2023

ACS Appl. Electron. Mater.

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“…It is worth noting that most CM-COFs exhibit the same topological structure and layer stacking mode as the corresponding achiral COFs synthesized directly from 1,3,5-triformylbenzene and amino monomers, except for CM-COF-2. Previous reports have shown that an AA-stacking COF could be obtained through the direct condensation between 1,3,5-triformylbenzene and 2,5-dimethyl-1,4-benzenediamine, 37 which differs from the ABC-stacking structure observed in CM-COF-2. To investigate the difference between traditional solvothermal synthesis and the cage-to-COF process, reaction time-dependent FT-IR and PXRD measurements were conducted (Figure S8).…”

Section: ■ Introductionmentioning

confidence: 90%

Chiral Memory in Dynamic Transformation from Porous Organic Cages to Covalent Organic Frameworks for Enantiorecognition Analysis

Song,

Yang,

Zheng

et al. 2024

J. Am. Chem. Soc.

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The preservation of chirality during a transformation process, known as the "chiral memory" effect, has garnered significant attention across multiple research disciplines. Here, we first report the retention of the original chiral structure during dynamic covalent chemistry (DCC)-induced structural transformation from porous organic cages into covalent organic frameworks (COFs). A total of six twodimensional chiral COFs constructed by entirely achiral building blocks were obtained through the DCC-induced substitution of chiral linkers in a homochiral cage (CC3-R or -S) using achiral amine monomers. Homochirality of these COFs resulted from the construction of 3-fold-symmetric benzene-1,3,5-methanimine cores with a propeller-like configuration of one single-handedness throughout the cage-to-COF transformation. The obtained chiral COFs can be further utilized as fluorescence sensors or chiral stationary phases for gas chromatography with high enantioselectivity. The present study thus highlighted the great potential to expand the scope of functional chiral materials via DCC-induced crystal-tocrystal transformation with the chiral memory effect.

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“…1,2 Nuclear power has contributed approximately 11% of the total electricity in the world, and the proportion is still increasing fast with the explosively rapid development of contemporary industries and the global energy shortage. 3 However, the associated radioactive nuclear wastes have brought severe threats to the environmental system, which are of high priority to deal with for sustainable development and public acceptance of nuclear energy. 4,5…”

Section: Introductionmentioning

confidence: 99%

Palladium recovery from acidic solution with phenanthroline-based covalent organic polymers as adsorbents for efficient heterogeneous catalysis

Liu,

Wu,

Wang

et al. 2024

Green Chem.

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Green mechanochemical synthesis of imine-linked covalent organic frameworks for high iodine capture

Abstract: Covalent organic frameworks (COFs) have emerged as promising adsorbents for radioiodine capture. However, the conventional solvothermal synthesis contradicts the principles of green chemistry due to the use of hazardous solvents,...

Cited by 29 publications

References 58 publications

Two-Dimensional Covalent Organic Framework Isomers Induce Different Properties

Two-Dimensional Covalent Organic Framework Isomers Induce Different Properties

Chiral Memory in Dynamic Transformation from Porous Organic Cages to Covalent Organic Frameworks for Enantiorecognition Analysis

Palladium recovery from acidic solution with phenanthroline-based covalent organic polymers as adsorbents for efficient heterogeneous catalysis

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