Figure 5.

Predicted cell viability for all ionic liquids (ILs) in the initial search space at (a) 1 h and (b) 24 h. The dotted line indicates the viability border (60%) for 24 h prediction. Potentially useful ammonium-type ILs with low cytotoxicity (viability >60%) at 24 h are indicated in blue color. Arrowheads indicate ILs whose cytotoxicity was experimentally verified in Figure 6. ILs indicated by parenthesis in the left side of b are low cytotoxic phosphonium ILs, which are also experimentally verified (Figure 3b).