An aggregation-induced emission based “turn-on” fluorescent chemodosimeter for the selective detection of Pb²⁺ ions

Abstract

An aggregation-induced emission (AIE) based “turn-on” fluorescent chemodosimeter for selective detection of Pb2+ ions has been developed. The probe is a phosphate functionalized tetraphenylethylene derivative and the resulting lead–TPE complex has very low solubility in working solvent and triggers AIE and shows a low detection limit of 10 ppb.

Fluorescence Turn-on Chemosensor for the Detection of Dissolved CO2 Based on Ion-Induced Aggregation of Tetraphenylethylene Derivative

“…First, TPE-OH (2) was prepared by adopting a reported synthetic route in high yield. 80 The spectra were in good agreement with the reported values. The compound 2 was easily converted to probe 1 by starring it with a mixture of 4-butanesulfonate and sodium methoxide in anhydrous methanol.…”

“…[50][51][52][53][54][55] However, to the best of our knowledge, AIEgens have not been utilized to develop a sensor for dCO 2 . Herein, as a part of our continued surge towards developing detection tools for biologically / environmentally important analytes, [79][80][81][82][83] we report a label-free assay for dCO 2 using AIE property of a TPE derivative.…”

Aggregation Induced Emissive Luminogens for Sensing of Toxic Elements

“…synthesized an TPE based aggregation induced emission (AIE) turn on fluorescent chemodosimeter for selective detection of Pb 2+ ion (Figure 20 ). [55] The synthesized chemodosimeter consist of tetraphenylethene phosphate monoester residues which have strong affinity towards lead ion in 95 % water‐THF by ‘turn‐on’ fluorescence response with high selectivity and sensitivity with limit of detection in range of 10ppb.…”

A fluorescence and UV/vis absorption dual-signaling probe with aggregation-induced emission characteristics for specific detection of cysteine

“…[22][23][24] By taking advantage of attractive AIE phenomenon, a large number of intelligent AIE uorogens susceptible to external stimuli, such as bio-species, mechanical force, temperature change, pH variation, toxic vapor, and photonic irradiation have been explored and developed. 25 Tetraphenylethylene (TPE) is a typical AIE uorogen, [26][27][28][29][30] which has been widely used for the construction of various uorescent sensors due to its signicant increase in uorescence upon aggregation, low cytotoxicity and ease in synthesis and modication. [31][32][33][34][35][36][37] Just recently, Wang and co-workers reported a new TPE-based AIE probe bearing a 2,4-dinitrobenzenesulfonyl pendant, which is able to detect Cys selectively over Hcy and GSH in PBS.…”