Table 2.

Wetting parameters cos θ _Α, cos θ _Α(Β), and Γ _AB of nanoporous silicon infused with [C₂mim]MeSO₄ (liquid A) with respect to different probe liquids (liquid B)

Solid	Liquid A	Liquid B	cos θ A	cos θ A(B)	Γ AB
Si–SiO2	[C2mim]MeSO4	Tetrahydrofuran	1.00	0.97	−4.4
Si–SiO2	[C2mim]MeSO4	Toluene	1.00	0.94	−2.6
Si–SiO2	[C2mim]MeSO4	Hexadecane	1.00	0.86	−1.3
Si–SiO2	[C2mim]MeSO4	Cyclohexane	1.00	0.97	−1.6
Si[C3mim]Cl	[C2mim]MeSO4	Tetrahydrofuran	1.00	1.00	−4.4
Si-[C3mim]Cl	[C2mim]MeSO4	Toluene	1.00	1.00	−2.6
Si-[C3mim]Cl	[C2mim]MeSO4	Hexadecane	1.00	0.93	−1.3
Si-[C3mim]Cl	[C2mim]MeSO4	Cyclohexane	1.00	0.96	−1.6

The solid surface composition was either a native oxide (Si–SiO₂) or a monolayer of Si-[C₃mim]Cl