Recent advances in aggregation-induced emission (AIE)-based chemosensors for the detection of organic small molecules

Abstract

The discovery of the aggregation-induced emission (AIE) phenomenon in certain classes of organic molecules has revolutionized our understanding of the photoluminescence properties of materials. This breakthrough has opened up new...

Triazine Core Anchored Lanthanide Driven Soft Gels: Photo Switching Emission, Robust Anticounterfeiting, and Smart Sensor Probe for Nitroexplosive/Nitrofuran Antibiotics

“…In general, quenching of luminescence may happen through structural destruction of the framework, host−guest interaction via ground-state complex formation, and excited-state interactions, including electron transfer and energy transfer phenomena. 64 Apart from this, the "inner filter effect" (IFE) can be a decisive factor for the selective quenching of intense green luminescence of Tb_TATMB. The H 3 TATMB linker acts as an antenna ligand that sensitizes the terbium ions via the energy transfer process and shows excellent luminescence behavior.…”

“…A few experimental and theoretical investigations were carried out to elucidate the underlying factors contributing to the selective quenching of the characteristic emission peaks of Tb_TATMB after the addition of corresponding analytes. In general, quenching of luminescence may happen through structural destruction of the framework, host–guest interaction via ground-state complex formation, and excited-state interactions, including electron transfer and energy transfer phenomena …”

On Sense and Deform: Molecular Luminescence for Mechanoscience

“…As the mechanical sensitivity of molecules relies on their intramolecular and intermolecular distances and conformations, the control of bulkiness and degrees of freedom, such as dihedral angles (planar/nonplanar) and rotation (free rotation/locked) between chromophores, is necessary. These requirements are related to aggregation-induced emission (AIE) and aggregation-caused quenching (ACQ), , locally excited (LE) and intramolecular charge transfer (ICT) states, , and other mechanisms that occur owing to the specific molecular arrangement under the (semi)­concentrated conditions. Tang et al explained the correlation between the degree of freedom in a molecule and the AIE/ACQ characters by designing free, semilocked, and fully locked TTEs (TTE, sl-TTE, and fl-TTE, respectively, Figure a) .…”

Morphological adaptability through structural alterations in an AIE active novel chemosensor with Al(iii), Fe(iii), and gas phase/aqueous phase TNP recognition ability

“…These AIE-active compounds have been used extensively in biosensors, optoelectronic devices, and ion sensing due to their unique photophysical features. 28–30 Initially, Schiff bases were found to display AIE activity, and so it is clear that among several organic chemosensors, Schiff bases are highly preferred as they show AIE active properties. However, the production of AIEE active organic nanoprobes, free from synthetic complications, for a range of biological and environmental applications, remains a challenging undertaking.…”