Gelation-based visual detection of analytes

Stimuli responsive dynamic transformations in supramolecular gels

“…Common chemical analytes include metal ions, amino acids, carbohydrates, amines and carboxylic acids. [296][297][298][299][300][301] The nature of the chemical analytes demands specific design of the gelators in order to exhibit changes upon interaction. Generally, gelators possessing heteroaromatic scaffolds (like pyridine, imidazole, thiazole etc.…”

Chiral gelators for visual enantiomeric recognition

“…supramolecular gels have been explored in diverse applications including visual molecular recognition. 57,58 As a consequence of the involvement of weak non-covalent interactions in forming the self-assembled network, these gels have the ability to respond to external stimuli such as light, heat, or pH. 59 In the presence of external stimuli, the intermolecular non-covalent interactions can be disrupted or fostered which can be observed through gel to sol or sol to gel transitions.…”

“…supramolecular gels have been explored in diverse applications including visual molecular recognition. 57,58…”

Beyond Sol-Gel: Molecular Gels with Different Transitions

“…The transitions involving a chemical, photochemical transformation, or complexation of the gelator are beyond the scope of this review. These transitions, induced by different stimuli [ 38 , 39 , 40 ], light [ 41 ], pH, redox reactions [ 42 ], anions [ 43 , 44 , 45 , 46 ], analytes [ 47 ], or enzymes [ 48 ] have been already thoroughly reviewed; moreover, many of them are gel–sol transitions. The present review will examine gel-to-gel transitions, gel-to-crystal transitions, liquid–liquid phase separations, eutectic transitions, and syneresis.…”