Hydrogen-bonded organic framework with tailored pores prepared by enlarging the core size for high-performance Xe/Kr separation

Yuan, Zhen; Chen, Liangji; Zhou, Xin; Li, Lu; Li, Yunbin; Yang, Yisi; Zhou, Zhiqi; Chen, Yanting; Xiang, Shengchang; Chen, Banglin; Zhang, Zhangjing

doi:10.1039/d3ta04738e

Cited by 9 publications

(3 citation statements)

References 69 publications

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“…Neutral molecular HOFs have seven main building units: DAT, [87,101,[133][134][135][136] carboxylate, [47,[68][69][70][71][72][73] urea, [63,64] pyrazole, [65,67] pyridine, [75][76][77] imidazole, [78,79] and cyanine. [80][81][82][83][84] Charge-assisted hydrogen-bonded can enhance the efficiency of connecting the building blocks and improve the stability of the structure compared to uncharged hydrogen bonds.…”

Section: Patterns Of Hydrogen-bonded Constructionmentioning

confidence: 99%

“…[78,79] Recently, HOFs constructed from cyanine-containing units are flourishing, such as HOF-FJU-1, HOF-FJU-4/5, HOF-40, and HOF-26/27/28/ 29. [80][81][82][83][84] The main interactions are CÀ H•••N, CÀ H•••π, and π-π interactions. It can also be applied to adsorption and separation of gases, as well as molecular recognition.…”

Section: Introductionmentioning

confidence: 99%

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Charge‐Assisted Ionic Hydrogen‐Bonded Organic Frameworks: Designable and Stabilized Multifunctional Materials

Chen,

Cao,

Bai

et al. 2024

Chemistry A European J

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Hydrogen‐bonded organic frameworks (HOFs) are a class of crystalline framework materials assembled by hydrogen bonds. HOFs have the advantages of high crystallinity, mild reaction conditions, good solution processability, and reproducibility. Coupled with the reversibility and flexibility of hydrogen bonds, HOFs can be assembled into a wide diversity of crystalline structures. Since the bonding energy of hydrogen bonds is lower than that of ligand and covalent bonds, the framework of HOFs is prone to collapse after desolventisation and the stability is not high, which limits the development and application of HOFs. In recent years, numerous stable and functional HOFs have been developed by π‐π stacking, highly interpenetrated networks, charge‐assisted, ligand‐bond‐assisted, molecular weaving, and covalent cross‐linking. Charge‐assisted ionic HOFs introduce electrostatic attraction into HOFs to improve stability while enriching structural diversity and functionality. In this paper, we review the development, the principles of rational design and assembly of charge‐assisted ionic HOFs, introduces the different building block construction modes of charge‐assisted ionic HOFs. Highlight the applications of charge‐assisted ionic HOFs in gas adsorption and separation, proton conduction, biological applications, etc., and prospects for the diverse design of charge‐assisted ionic HOFs structures and multifunctional applications.

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Section: Patterns Of Hydrogen-bonded Constructionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Charge‐Assisted Ionic Hydrogen‐Bonded Organic Frameworks: Designable and Stabilized Multifunctional Materials

Chen,

Cao,

Bai

et al. 2024

Chemistry A European J

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“…Organic crystals including hydrogen-bonded organic frameworks (HOFs) are auspicious multifunctional materials, − with versatile properties such as functionalized channels, tuneable pore sizes, solution processability, and ease of regeneration, ,− making them suitable for diverse applications including gas adsorption, − proton conduction, , catalysis, , biology, and fluorescence sensing. − A notable characteristic lies in their potential design flexibility, enabling the integration of different organic luminescent chromophores within their structural framework. Given the sensitivity of luminescence as a visual signal, organic crystals with distinctive luminescent characteristics may find applications in chemical sensing, detection, molecular recognition, barcode identification, and other research areas. − …”

Section: Introductionmentioning

confidence: 99%

Subtle Structural Variations within Solvent-Free D–A-Type Organic Crystals for Tuning Emission Wavelength up to 47 nm Shift

Yuan,

Zhou,

Chen

et al. 2024

Crystal Growth & Design

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Organic crystals have emerged as a promising platform for designing luminescent materials; yet, achieving tuneable fluorescence through subtle structural changes remains exceptionally rare. In this work, we report the fluorescence modulation caused by subtle structural changes in a solvent-free framework, HOF-FJU-101, assembled by a D−A molecule 3,4bis(bis(4-bromophenyl)amino)cyclobut-3-ene-1,2-dione (o-SQDPA-Br). HOF-FJU-101 is a dense hydrogen-bonded organic framework interconnected through hydrogen bonding, π•••π interactions, and conjugation between bromine atoms and benzene rings. Switching the crystallization mother liquor from dimethyl sulfoxide to dichloromethane, acetone, and N,N-dimethylformamide, different isomorphism HOF-FJU-101 crystals were obtained with subtle structure changes in both intermolecular Br4•••Ph C and intramolecular C27−Br4 distances due to the contraction deformation of heavy atom Br, which affects the electron transfer from diphenylamine donor to the squaric acid ring acceptor, resulting in significantly differentiated luminescence behavior. The tuneable emission wavelength range extended from 651 to 604 nm, with a maximum of up to 47 nm shifts.

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Structural Design and Energy and Environmental Applications of Hydrogen‐Bonded Organic Frameworks: A Systematic Review

Liu,

et al. 2024

Advanced Science

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Hydrogen‐bonded organic frameworks (HOFs) are emerging porous materials that show high structural flexibility, mild synthetic conditions, good solution processability, easy healing and regeneration, and good recyclability. Although these properties give them many potential multifunctional applications, their frameworks are unstable due to the presence of only weak and reversible hydrogen bonds. In this work, the development history and synthesis methods of HOFs are reviewed, and categorize their structural design concepts and strategies to improve their stability. More importantly, due to the significant potential of the latest HOF‐related research for addressing energy and environmental issues, this work discusses the latest advances in the methods of energy storage and conversion, energy substance generation and isolation, environmental detection and isolation, degradation and transformation, and biological applications. Furthermore, a discussion of the coupling orientation of HOF in the cross‐cutting fields of energy and environment is presented for the first time. Finally, current challenges, opportunities, and strategies for the development of HOFs to advance their energy and environmental applications are discussed.

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Hydrogen-bonded organic framework with tailored pores prepared by enlarging the core size for high-performance Xe/Kr separation

Abstract: Efficient separation of xenon (Xe) and krypton (Kr) mixtures is a valuable but challenging process in gas industries. Hydrogen bonded organic frameworks (HOFs) have emerged as a promising class of...

Cited by 9 publications

References 69 publications

Charge‐Assisted Ionic Hydrogen‐Bonded Organic Frameworks: Designable and Stabilized Multifunctional Materials

Charge‐Assisted Ionic Hydrogen‐Bonded Organic Frameworks: Designable and Stabilized Multifunctional Materials

Subtle Structural Variations within Solvent-Free D–A-Type Organic Crystals for Tuning Emission Wavelength up to 47 nm Shift

Structural Design and Energy and Environmental Applications of Hydrogen‐Bonded Organic Frameworks: A Systematic Review

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