Fabrication of a Hydrazone-Based Al(III)-Selective “Turn-On” Fluorescent Chemosensor and Ensuing Potential Recognition of Picric Acid

Abstract

A hydrazone-based N′1,N′3-bis((E)-4-(diethylamino)-2–hydroxybenzylidene)isophthalohydrazide (NDHIPH), has been synthesized, characterized, and assessed for its highly selective and sensitive (limit of detection, 2.53 nM) response toward Al(III) via fluorescence enhancement in 95% aqueous medium. All experimental results of analytical studies are in good consonance with the theoretical studies performed. Further, this NDHIPH-Al(III) ensemble is used for selective and sensitive (12.15 nM) detection of explosive picric acid (PA) via fluorescence quenching. This reversible behavior of NDHIPH toward Al(III) and PA is used for the creation of a molecular logic gate.

Mechanofluorochromic Luminescence, and Al3+Detection of an Aggregation-Induced Emission-Active Salicylaldehyde-Based Acylhydrazone Derivative

“…[1][2][3] As a kind of smart material, mechanofluorochromic (MFC) materials have been achieved rapid development in mechano-sensors, optical information, memory chips, storage media and security inks, whose solid-state fluorescence color and/or intensity can be tuned by physical approaches, such as grinding, and poor coordination makes the determination of Al 3 ＋ ion much more difficult in comparison to the determination of other metal cations, such as Cu 2 ＋ , Pb 2 ＋ , Hg 2 ＋ , Zn 2 ＋ , and so on. [34] Moreover, although a considerable number of chemosensors have been designed for sensing Al 3 ＋ , they are relatively fewer in comparison to those for sensing other metal ions. [34][35][36][37] Furthermore, designing multifunctional organic molecules with AIE characteristics that also displays fluorescence responses for Al 3 ＋ with a lower detection limit and high selectivity through simple synthetic methods is of current interest.…”

“…As a result, a considerable amount of Al 3 ＋ ions have been accumulated in environment, causing water contamination. [34] Nevertheless, the strong hydration Chinese Journal of Organic Chemistry NOTE…”

The fluorescence turn-off mechanism of a norbornene-derived homopolymer – an Al3+ colorimetric and fluorescent chemosensor

“…NDMIP-DASA was designed with two main moieties, included, norbornene and Schiff base moiety which provides an ideal framework for a specific coordinate to Al 3+ due to its ability to contribute a coordinate environment of −CONH, −C=N, and −OH groups. 6 High selectivity for Al 3+ over other metal ions was observed for both NDMIP-DASA monomer and PNDMIP-DASA homopolymer. Interestingly, we had found that the monomeric sensor showed turn-on fluorescence after adding Al 3+ cation and its homopolymer Scheme 1.…”

“…The detection of Al 3+ is quite difficult due to its poor coordination and strong hydration compared to other transition metals (Cu 2+ , Pb 2+ , Hg 2+ , Zn 2+ , etc.). 6,7 The fluorescence method is the most attractive and highly sensitive method for detecting low concentrations of ions and neutral analysts. [8][9][10] In recent years, significant progress has been made in detecting Al 3+ using a fluorescent chemosensor.…”

“Turn-On” Fluorescent Biosensors for High Selective and Sensitive Detection of Al3+ Ion

“…According to the World Health Organization's assessment, the daily intake of aluminum is specified to be 3-10 mg/day, and the limits of Al 3+ concentration in drinking water is 7.41 mM (Valeur and Leray, 2000; Barcelo and Poschenrieder, 2002;Krejpcio and Wojciak, 2002). Fluorescence sensors have generated extensive research in the past few decades, due to their simple operation (Kong et al, 2014;Singh et al, 2017;Sharma et al, 2019;Shi et al, 2020), extremely high sensitivity (Dong et al, 2017;Li et al, 2020), and direct visual effect (Fu W. et al, 2019;Tang et al, 2019;Jiao et al, 2020) and high selectivity (Li X. et al, 2014;Jiang et al, 2017). Most Al 3+ sensors are designed with quite complex structures, which are difficult to synthesize and dissolve in water Li T. et al, 2014;Gupta and Kumar, 2016;Huang et al, 2016;Balakrishnan et al, 2017).…”