Unravelling the optical properties and self-assembly behavior of ciprofloxacin in ionic liquid environments: probing the role of cationic residues and counter anions
Swapan Patra, Nilanjan Dey
Abstract
facilitated π-π and hydrogen-bond interactions, disrupting CIP aggregation and resulting in smaller clusters. The polarizable nature of bis(trifluoromethylsulfonyl)imide along with its hydrogen bond-accepting ability enabled stronger binding of ILs containing this anion to CIP compared to hexafluorophosphate-containing ILs. Further studies indicated that pH 6 is optimum for CIP-IL interactions, where CIP remained in its zwitterionic form. Increased temperature and ionic strength diminished the quenching efficiency, consistent with the reduced stability of CIP-IL complexes under such conditions.
Topics & Concepts
HexafluorophosphateIonic liquidImideCationic polymerizationChemistryHydrogen bondQuenching (fluorescence)Hydrophobic effectAqueous solutionBromideInorganic chemistryPhotochemistryPolymer chemistryOrganic chemistryFluorescenceMoleculeQuantum mechanicsCatalysisPhysicsIonic liquids properties and applicationsChemical and Physical Properties in Aqueous SolutionsElectrochemical Analysis and Applications