6-Aminocoumarin-derived Schiff base gelators: aggregation and sensing of CN^-, Fe³⁺, Cu²⁺ and CO₂ under different conditions.

ABSTRACT: Herein, we report the synthesis, characterization, supramolecular gelation and multiple applications of 6-aminocoumarin-derived Schiff bases 1 and 2. Both Schiff bases underwent gelation in DMF-H₂O (2 : 1, v/v), DMSO-H₂O (2 : 1, v/v) and dioxane-H₂O (2 : 1, v/v) involving weak forces. Furthermore, the gels were stable and exhibited good viscoelastic properties. The storage modulus (G') of each gel was considerably higher than its loss modulus (G''). The higher value of the crossover point and lower value of tan δ for the gel of Schiff base 2 compared to the gel of Schiff base 1 demonstrated the better gelation behaviour of 2 than that of 1 in DMF-H₂O (2 : 1, v/v). Further, iodo-analogue 2 exhibited cross-linked helical morpho

SUBMITTER: Paul E 

PROVIDER: S-EPMC11484512 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature