Configuration-regulated highly luminescent hydrogen–organic frameworks for detection of phenelzine and propofol

Liu, Yanhong; Yan, Bing

doi:10.1039/d3qi02083e

Inorg. Chem. Front.

2024

DOI: 10.1039/d3qi02083e

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Configuration-regulated highly luminescent hydrogen–organic frameworks for detection of phenelzine and propofol

Yanhong Liu,

Bing Yan

Abstract: Sensing and monitoring of psychotropic and controlled substances in water is critical to health concern. Herein, two luminescent HOFs (TPPA-BDC and TPPA-BTC) are synthesized by using the same organic fluorophore...

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Cited by 2 publications

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Hydrogen‐Bonded Organic Frameworks as an Appealing Platform for Luminescent Sensing

Xiong,

Xiang,

et al. 2024

Adv Funct Materials

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Hydrogen‐bonded organic frameworks (HOFs), a novel subclass of porous crystalline materials self‐assembled from organic linkers through hydrogen bonding and other intermolecular interactions, have emerged as an exciting platform for developing multifunctional materials. Recently, luminescent HOF sensors have drawn considerable attention due to their unique advantages, such as hydrogen‐bonding flexibility, inherent luminescent centers in organic linkers, ease of functionalization, low density and toxicity, and good stability. However, a comprehensive study on the design strategies, functionalities, and applications of HOFs in sensing is lacking. In this review, the uniqueness and development of luminescent sensing HOFs are outlined. The design principles and strategies to enable the sensing performance are summarized, including the pre‐design of luminescent organic linkers and post‐modification with additional luminescent species. The state‐of‐the‐art advances in diverse sensing applications are overviewed, such as the detection of chemical pollutants, biomolecules, gases, and physical factors like temperature and mechanical forces. Moreover, the current challenges and corresponding potential avenues are discussed. This review aims to inspire more innovative research on the fabrication of advanced HOFs for luminescent sensing functions.

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Hydrogen‐Bonded Organic Frameworks as an Appealing Platform for Luminescent Sensing

Xiong,

Xiang,

et al. 2024

Adv Funct Materials

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An Acid-Responsive Fluorescent Molecule for Erasable Anti-Counterfeiting

Liu,

Gao,

Niu

et al. 2024

Molecules

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A tetraphenylethylene (TPE) derivative, TPEPhDAT, modified by diaminotriazine (DAT), was prepared by successive Suzuki–Miyaura coupling and ring-closing reactions. This compound exhibits aggregation-induced emission enhancement (AIEE) properties in the DMSO/MeOH system, with a fluorescence emission intensity in the aggregated state that is 5-fold higher than that of its counterpart in a dilute solution. Moreover, the DAT structure of the molecule is a good acceptor of protons; thus, the TPEPhDAT molecule exhibits acid-responsive fluorescence. TPEPhDAT was protonated by trifluoroacetic acid (TFA), leading to fluorescence quenching, which was reversibly restored by treatment with ammonia (on–off switch). Time-dependent density functional theory (TDDFT) computational studies have shown that protonation enhances the electron-withdrawing capacity of the triazine nucleus and reduces the bandgap. The protonated TPEPhDAT conformation became more distorted, and the fluorescence lifetime was attenuated, which may have produced a twisted intramolecular charge transfer (TICT) effect, leading to fluorescence redshift and quenching. MeOH can easily remove the protonated TPEPhDAT, and this acid-induced discoloration and erasable property can be applied in anti-counterfeiting.

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Configuration-regulated highly luminescent hydrogen–organic frameworks for detection of phenelzine and propofol

Abstract: Sensing and monitoring of psychotropic and controlled substances in water is critical to health concern. Herein, two luminescent HOFs (TPPA-BDC and TPPA-BTC) are synthesized by using the same organic fluorophore...

Cited by 2 publications

References 53 publications

Hydrogen‐Bonded Organic Frameworks as an Appealing Platform for Luminescent Sensing

Hydrogen‐Bonded Organic Frameworks as an Appealing Platform for Luminescent Sensing

An Acid-Responsive Fluorescent Molecule for Erasable Anti-Counterfeiting

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