Photophysics and rotational dynamics of Nile red in room temperature ionic liquid (RTIL) and RTIL-cosolvents binary mixtures

Probing the heterogeneity of molecular level organization of ionic liquids: a comparative study using neutral Nile red and cationic Nile blue sulfate as fluorescent probes for butyrolactam-based protic ionic liquids

“…36 Very recently, Rajesh et al observed similar interactions for Nile red in a neat 1-ethyl-3methylimidazolium bis(trifluoromethanesulfonyl)imide RTIL and binary IL mixture. 37 Although fluorescent molecular probes have been extensively employed to study the structural organization of aprotic ionic liquids (APILs), there is a distinct lack of explicit investigations into such studies for PILs. In this work, we have chosen two fluorescent probe molecules that are similar in molecular volumes and different with regard to their charge: Nile red (a neutral oxazine dye) (NR) and Nile blue sulfate (a cationic oxazine dye) (NBS).…”

“…36 Very recently, Rajesh et al observed similar interactions for Nile red in a neat 1-ethyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide RTIL and binary IL mixture. 37…”