2,5-bis(4-alkoxycarbonylphenyl)-1,4-diaryl-1,4-dihydropyrrolo[3,2-b]pyrrole (AAPP) AIEgens: tunable RIR and TICT characteristics and their multifunctional applications

Abstract

Novel propeller-like AIEgens with tunable emission were readily prepared and used as a fluorescent thermometer and selective chemosensor for Cd(ii) detection.

A Novel Aggregation‐Induced Emission Luminogen Based Molecularly Imprinted Fluorescence Sensor for Ratiometric Determination of Rhodamine B in Food Samples

“…As shown in Figure , an absorption peak at 320 nm of TPE‐A was found in EtOH. However, this fine structure of TPE‐A weakened and a level‐off tail appeared in the visible region in the solution of f w =99%, which is due to the light scattering coming from the aggregate suspensions . Another direct evidence to demonstrate the aggregation of TPE‐A in poor solvent of H 2 O was procured from DLS result.…”

Matrix Coordination Induced Emission in a Three‐Dimensional Silver Cluster‐Assembled Material

“…in which is Plank's constant, is the velocity of light, is the Stokes shift of the fluorophore in nonpolar solvent, is the radius of the Onsager cavity around the fluorophore, and μ e and μ g are the excited‐state dipole moment and ground‐state dipole moment, respectively. The Lippert–Mataga plot of CPPP is shown in Figure B, and it exhibits good linearity, which indicates its typical TICT character …”

Synthesis and Characterization of Liquid‐Crystalline Tetraoxapentacene Derivatives Exhibiting Aggregation‐Induced Emission

“…This phenomenon is the result of the donor–acceptor structure of series 1 , which bear donor groups at the periphery of the molecule and an acceptor in the core. As is typical for these charge‐transfer excited states, the ICT state is less emissive, resulting in a decrease in fluorescence in polar solvents . In contrast, for nonpolar solvents, such as hexane, toluene, and benzene, the excited‐state charge transfer is disfavored, resulting in efficient emission from the locally excited state.…”

“…Compounds exhibiting AIE are of interest due to their potential use in light‐emitting diodes, probes, and sensors . Although there are numerous reported examples of compounds exhibiting AIE, many of the most common structural motifs have drawbacks . AIE materials based on alkenes (such as tetraphenylethene) are prone to E / Z photoisomerization and photooxidation .…”

“…[9,10,12] Althought here are numerousr eported examples of compounds exhibiting AIE, many of the most common structuralm otifs have drawbacks. [13][14][15][16] AIE materials based on alkenes (such as tetraphenylethene) are prone to E/Z photoisomerizationand photooxidation. [15,16] In addition, hexaphenylsiloles are difficult to prepare and they are not stable under basic conditions.…”