Schiff Base Aggregation-Induced Emission Luminogens for Sensing Applications: A Review

Wang, Jingfei; Meng, Qingye; Yang, Yi; Zhong, Shuangling; Zhang, Ruiting; Fang, Yuhang; Gao, Yan; Cui, Xuejun

doi:10.1021/acssensors.2c01550

Cited by 78 publications

(26 citation statements)

References 120 publications

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“…Hence, anti-ACQ materials, also known as the Aggregation-Induced Enhanced Emission (AIEE) materials have generated a lot of interest due to their unique light-emitting properties [ 34 , 35 ]. Such AIEE-active fluorophores are usually nonemissive or poorly emissive at the lower concentration but are brightly emissive at the higher concentration or in the aggregated state [ 36 , 37 ]. Moreover, AIEE-active chemosensors offer the advantages of low background noise and a large Stokes shift [ 35 , 38 ].…”

Section: Introductionmentioning

confidence: 99%

Discriminative ‘Turn-on’ Detection of Al3+ and Ga3+ Ions as Well as Aspartic Acid by Two Fluorescent Chemosensors

Goyal

Annan

Ahluwalia

et al. 2023

Sensors

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In this work, two Schiff-base-based chemosensors L1 and L2 containing electron-rich quinoline and anthracene rings were designed. L1 is AIEE active in a MeOH-H2O solvent system while formed aggregates as confirmed by the DLS measurements and fluorescence lifetime studies. The chemosensor L1 was used for the sensitive, selective, and reversible ‘turn-on’ detection of Al3+ and Ga3+ ions as well as Aspartic Acid (Asp). Chemosensor L2, an isomer of L1, was able to selectively detect Ga3+ ion even in the presence of Al3+ ions and thus was able to discriminate between the two ions. The binding mode of chemosensors with analytes was substantiated through a combination of 1H NMR spectra, mass spectra, and DFT studies. The ‘turn-on’ nature of fluorescence sensing by the two chemosensors enabled the development of colorimetric detection, filter-paper-based test strips, and polystyrene film-based detection techniques.

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Section: Introductionmentioning

confidence: 99%

Discriminative ‘Turn-on’ Detection of Al3+ and Ga3+ Ions as Well as Aspartic Acid by Two Fluorescent Chemosensors

Goyal

Annan

Ahluwalia

et al. 2023

Sensors

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“…Schiff bases have the advantages of simple synthesis, low toxicity, and easy design. 39 In recent years, Schiff bases have shown some progress in the fields of elastic crystals and flexible optical waveguides.…”

Section: Introductionmentioning

confidence: 99%

“…Schiff bases have the advantages of simple synthesis, low toxicity, and easy design . In recent years, Schiff bases have shown some progress in the fields of elastic crystals and flexible optical waveguides. ,− Herein, we focused on the regulation of heterocyclic Schiff base molecule (2-(3H-benzimidazol-5-yliminomethyl)-6-methoxyphenol, BYMP) via crystal engineering with the aim of obtaining diverse intermolecular interactions.…”

Section: Introductionmentioning

confidence: 99%

Flexible Optical Waveguides in Heterocyclic Schiff Base Self-Assembled Hydrogen-Bonded Solvates

Yang

Bai

et al. 2023

Crystal Growth & Design

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Flexible fluorescent crystalline materials exhibit both mechanical and optical properties and have received great attention due to their potential applications in flexible optical devices. Simultaneously adjusting the mechanical and optical properties of crystalline materials remains interesting and challenging. In the present work, a guest molecule was introduced via hydrogen-bonded solvation, which achieved excellent mechanical elasticity and higher fluorescence emission than that of the host heterocyclic Schiff base molecule crystal itself. The crystal structure–property relationship and the molecular mechanism of the elasticity were then investigated in detail. It revealed that solvent molecules play a key role in changing both the stacking of fluorescent molecules and the interaction energy framework. In addition, the flexible fluorescent solvate exhibits a good waveguide property. A bent crystal was found to have a larger optical loss coefficient than a straight crystal. Furthermore, the size effect on the optical loss coefficient of the waveguide was discussed in which the optical loss coefficient decreases as the sizes increase. Such a size effect is usually neglected in waveguide material research and should be complemented in the performance evaluation of optical waveguides.

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“…The achievements of tetraphenylethylene (TPE)-based AIE-active sensing probes have been reviewed by Bhosale’s group [ 32 ]. Wang et al summarized the development of Schiff base AIEgens for sensing applications [ 38 ]. In this work, we aimed to highlight the advances in AIEgens-based probes and sensing platforms for the detection of enzymes.…”

Section: Introductionmentioning

confidence: 99%

Biosensors for the Detection of Enzymes Based on Aggregation-Induced Emission

et al. 2022

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Enzymes play a critical role in most complex biochemical processes. Some of them can be regarded as biomarkers for disease diagnosis. Taking advantage of aggregation-induced emission (AIE)-based biosensors, a series of fluorogens with AIE characteristics (AIEgens) have been designed and synthesized for the detection and imaging of enzymes. In this work, we summarized the advances in AIEgens-based probes and sensing platforms for the fluorescent detection of enzymes, including proteases, phosphatases, glycosidases, cholinesterases, telomerase and others. The AIEgens involve organic dyes and metal nanoclusters. This work provides valuable references for the design of novel AIE-based sensing platforms.

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Schiff Base Aggregation-Induced Emission Luminogens for Sensing Applications: A Review

Cited by 78 publications

References 120 publications

Discriminative ‘Turn-on’ Detection of Al3+ and Ga3+ Ions as Well as Aspartic Acid by Two Fluorescent Chemosensors

Discriminative ‘Turn-on’ Detection of Al3+ and Ga3+ Ions as Well as Aspartic Acid by Two Fluorescent Chemosensors

Flexible Optical Waveguides in Heterocyclic Schiff Base Self-Assembled Hydrogen-Bonded Solvates

Biosensors for the Detection of Enzymes Based on Aggregation-Induced Emission

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