“…The first-generation of ILs, which replace the volatile organic solvents have low vapor pressure, melting point, and broader mobility [49,50]. These hydrolyzable ILs possess dialkylimidazoles and alkyl pyridines as cations, and halides as anions, thus exhibiting aquatic eco-toxicity [51,52]. The second-generation ILs, which are more tunable and stable in water and air contain more biocompatible cations, such as alkyl pyridines, ammonium, and phosphorus, and as anions, hexafluorophosphate and tetrafluoroborate [51].…”