A Naphthalenetetracarboxdiimide‐Containing Covalent Organic Polymer: Preparation, Single Crystal Structure and Battery Application

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(26)

Published: April 20, 2024

Inspired by dative boron-nitrogen (B←N) bonds proven to be the promising dynamic linkage for construction of crystalline covalent organic polymers/frameworks (COPs/COFs), we employed 1,4-bis(benzodioxaborole) benzene (BACT) and N,N'-Di(4-pyridyl)-1,4,5,8-naphthalenetetracarboxdiimide (DPNTCDI) as corresponding building blocks construct a functional COP (named CityU-25), which had been an anode in rechargeable lithium ion batteries. CityU-25 displayed excellent reversible storage capability 455 mAh/g after 170 cycles at 0.1 A/g, impressive one 673 720 0.5 A/g. These findings suggest that is standout candidate advanced battery technologies, highlighting potential application this type materials.

Language: Английский

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Single-Crystal-to-Single-Crystal Photosynthesis of Supramolecular Organoboron Polymers with Dynamic Effects

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(12), P. 8659 - 8667

Published: Feb. 26, 2024

The solid-state synthesis of single-crystalline organic polymers, having functional properties, remains an attractive and developing research area in polymer chemistry materials science. However, light-triggered topochemical crystalline polymers comprising organoboron backbone has not yet been reported. Here, we describe intriguing example single-crystal-to-single-crystal (SCSC) rapid photosynthesis (occurs on a seconds-scale) two structurally different linear driven by environmentally sustainable visible/sun light, obtained from the same monomer molecule. A newly designed Lewis acid-base type molecular B ← N adduct (consisting core naphthylvinylpyridine ligands) crystallizes forms featuring chemical structure but 3D structural topologies, namely, monomers

Language: Английский

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Complete separation of benzene-cyclohexene-cyclohexane mixtures via temperature-dependent molecular sieving by a flexible chain-like coordination polymer

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: March 12, 2024

Abstract The separation and purification of C6 cyclic hydrocarbons (benzene, cyclohexene, cyclohexane) represent a critically important but energy intensive process. Developing adsorptive technique to replace thermally driven distillation processes holds great promise significantly reduce consumption. Here we report flexible one-dimensional coordination polymer as an efficient adsorbent discriminate ternary via ideal molecular sieving mechanism. compound undergoes fully reversible structural transformation associated with removal/re-coordination water molecules between activated hydrocarbon-loaded forms. It exhibits distinct temperature- adsorbate-dependent adsorption behavior which facilitates the complete benzene, cyclohexene cyclohexane from their binary mixtures, record-high uptake ratios for C 6 H /C 12 10 in vapor phase highest selectivities liquid phase. In situ infrared spectroscopic analysis ab initio calculations provide insight into host-guest interactions effect on preferential transformation.

Language: Английский

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Constructing Covalent Organic Polymers through Dative B─N Bonds: Synthesis, Single Crystal Structures, and Physical Properties

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: March 10, 2024

Abstract Growing single crystals of covalent organic polymers (COPs) for single‐crystal X‐ray diffraction analysis is very important and highly desirable because such strategy provides a deep understanding crystallization kinetics the structure‐property relationship COPs. Based on that dynamic bonds can allow self‐correction structures during crystal growth, two COPs ( CityU‐15 CityU‐16 ) based dative boron‐nitrogen (B─N) have been successfully obtained. Detailly, tetra(4‐pyridyl)tetrathiafulvalene (TTF(py) 4 tetra(4‐pyridyl)porphine (TPYP) are employed as N‐donor ligands to react with 1,4‐bis(benzodioxaborole) benzene prepare COPs, named , respectively. exhibits enhanced stability compared size reach up 0.7 cm. shows good recyclability reveals noticeable photosensitivity upon iodine doping. After treatment iodine, both display obvious color changes. Specially, device I 2 ‐treated excellent low‐voltage operation low energy consumption 3.3 fJ, facilitating development artificial vision. This work highlights successful introduction functional groups into B‐N‐containing opening new avenues expanding their applications.

Language: Английский

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Crystalline Porous Organic Frameworks Based on Multiple Dynamic Linkages

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(28)

Published: April 24, 2024

Abstract A novel class of crystalline porous materials has been developed utilizing multilevel dynamic linkages, including covalent B−O, dative B←N and hydrogen bonds. Typically, boronic acids undergo in situ condensation to afford B 3 O ‐based units, which further extend molecular complexes or chains via The obtained superstructures are subsequently interconnected bonds π–π interactions, producing organic frameworks (CPOFs). CPOFs display excellent solution processability, allowing dissolution subsequent crystallization their original structures, independent recrystallization conditions, possibly due the diverse bond energies involved interactions. Significantly, can be synthesized on a gram‐scale using cost‐effective monomers. In addition, numerous acidic sites endow with high NH capacity, surpassing most commercial materials.

Language: Английский

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Self-Healing B ← N-Based Hydrogen-Bonded Organic Framework for Exclusive Recognition and Separation of Toluene from Methyl-Cyclohexane

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(28), P. 19425 - 19433

Published: July 1, 2024

The effective separation of aromatic and aliphatic hydrocarbons remains a notable challenge in the petrochemical industry. Herein, we report self-healing three-dimensional B ← N-based hydrogen-bonded organic framework (HOF), BN-HOF-1, constructed from discrete N inclusive dimers through weak C–H···F C–H···N hydrogen-bonding interactions. To make use specific recognition for toluene molecules reversible ad/desorption nature this novel HOF, BN-HOF-1 can exclusively recognize separate mixtures toluene-methylcyclohexane, thus generating 99.6% pure its after gentle heating, recorded value among any reported materials purification. After were released framework, it becomes condensed BN-HOF-1a, which be further reused highly selective purification binary mixtures, structural recovery back to BN-HOF-1. Single-crystal X-ray diffraction molecular modeling studies reveal that high is attributed complementary electrostatic potential between host guest toluene, while HOF intermolecular

Language: Английский

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Introducing halogen-bonded gates in zeolitic frameworks for efficient benzene/cyclohexene/cyclohexane separation

Chemical Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

The introduction of a halogen-bonded gate into zeolite framework achieved molecular-sieving-like benzene separation from C 6 cyclic hydrocarbon mixtures.

Language: Английский

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Flexible Layered Metal–Organic Framework for Temperature-Dependent Discrimination of Cyclic Hydrocarbons

ACS Materials Letters, Journal Year: 2025, Volume and Issue: unknown, P. 780 - 786

Published: Jan. 30, 2025

The separation and purification of cyclic hydrocarbons such as benzene, cyclohexene, cyclohexane represent a crucially important but challenging process in the petrochemical industry. In this study, we show flexible two-dimensional metal–organic framework (MOF) acting an efficient adsorbent for adsorptive C6 via molecular-sieving. 2D-MOF features fully reversible structure transformation upon removal/recoordination terminal H2O solvent DMF, between activated hydrocarbon-loaded forms. distinct temperature- adsorbate-dependent adsorption behavior is accompanied by guest-induced expansion layered structure. Such enables full discrimination individual from their binary ternary mixtures temperature-programmed protocols, achieving third second highest uptake ratios C6H6/C6H12 C6H10/C6H12 among MOFs reported to date. This study represents first example using 2D MOF sorbent separate temperature-dependent molecular-sieving mechanism.

Language: Английский

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A metal azolate framework with small aperture for highly efficient ternary benzene/cyclohexene/cyclohexane separation

Chinese Journal of Structural Chemistry, Journal Year: 2025, Volume and Issue: unknown, P. 100540 - 100540

Published: Jan. 1, 2025

Language: Английский

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A Covalent Organic Nanoribbon: Preparation, Single‐Crystal Structure with Chinese Luban Lock Configuration, and Photocatalytic Behavior

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown

Published: June 27, 2024

Abstract The multiple mortise‐and‐tenon joint parts are the core factors to provide structural stability and diversity of Chinese Luban locks; however, constructing such structures is very challenging. Herein, single crystals a covalent organic nanoribbon (named CityU‐27 ) prepared through assembly hexahydroxytriphenylene (HHTP), 4,4′‐vinylenedipyridine (BYE), phenylboronic acid (BA) together dative boron←nitrogen (B←N) bonds. single‐crystal X‐ray diffraction analysis indicates that has structure, where each forms tight π–π interactions with four neighboring others generate lock‐like configuration. been demonstrated be an efficient photocatalyst in one‐pot tandem reaction hydrogen evolution (HER) semi‐hydrogenation alkynes series produce olefins without any additional photosensitizers co‐catalysts (metal‐free).

Language: Английский

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