Novel acylhydrazone-based supramolecular gel for super-sensitive detection of Fe3+ and alternant detection of CN− in aqueous medium

Aggregation Induced Emission Supramolecular Functionalized Benzimidazole Hydrogel for Metal‐Ion Responsive and Fluorescent Anti‐Counterfeiting

“…Compared with some published research works on Fe 3 + sensors, G2 has the characteristics of high detection sensitivity and environmental friendliness. [39][40][41][42][43] According to expectation, under cationic stimulation, G2 hydrogel showed gel-sol transformation and obvious color ChemistrySelect change. For instance, when Fe 3 + (2.0 equiv.)…”

A stimuli-responsive l-DOPA-based supramolecular gel for the detection of fluoride ion

“…48 In this context, detection of F − ions by means of a visible gel-to-solution (sol) transition process is a newly developed application for LMWGs. Most of the works related to F − ion sensing by sol–gel transition incorporate urea, 49 oxalamide, 50 acylhydrazone, 51 hydrazide, 52 and imine moieties 53 where the competitive hydrogen bonding interaction between the –NH– moiety and F − ion disrupted the existing non-covalent supramolecular interactions, which results in a gel-to-sol phase transition. Alongside, very few reports are available in the literature where F − ions cleave covalent bonds to convert the gelator into a non-gelator with a concomitant gel-to-sol phase transition.…”

Acylhydrazone functionalized naphthalene-based self-assembled supramolecular gels for efficient fluorescence detection of Fe3+

“…Based on our previous work in the preparation of supramolecular gels uorescent chemosensors, [37][38][39][40] we have obtained a novel acylhydrazone supramolecular gel (named ON) based on the conventional uorescent group naphthalene by multiple superimposed self-assembly drives. The design idea as follows: on the one hand, the introduction of 2-hydroxy-1-naphthalene formaldehyde and 3-hydroxy-2-naphthalene formamide into the molecular structure of gel factor N, which can form acyl hydrazone bonds, and both of them contain hydroxyl groups in the molecular structure, providing a strong guarantee for the self-assembly of gel factor N into gels (hydroxyl groups and acyl hydrazone bonds create good conditions for the formation of intermolecular hydrogen bonds).…”