Characterization of Binary Organogels Based on Some Azobenzene Compounds and Alkyloxybenzoic Acids with Different Chain Lengths
Table 1
Gelation behaviors of these binary organogels at room temperature.
Solvents
C18-Azo
C18-Azo-Me
C16-Azo
C16-Azo-Me
C14-Azo
C14-Azo-Me
C12-Azo
C12-Azo-Me
Acetone
PS
PS
PS
PS
PS
PS
PS
PS
Aniline
PS
PS
PS
PS
PS
PS
PS
PS
n-Hexane
S
S
S
S
S
S
S
S
Toluene
G (3.0)
G (3.0)
G (2.8)
G (2.8)
S
S
S
S
Pyridine
S
S
S
S
S
S
S
S
Isopropanol
S
S
S
S
S
S
S
S
Cyclopentanone
PS
PS
PS
PS
PS
PS
PS
PS
Cyclohexanone
PS
PS
PS
PS
PS
PS
PS
PS
Nitrobenzene
G (3.0)
G (3.0)
G (2.5)
G (2.5)
G (2.5)
G (2.5)
S
S
n-Butanol
S
S
S
S
S
S
S
S
Ethanolamine
G (3.0)
G (3.0)
G (2.8)
G (2.8)
G (2.5)
G (2.5)
G (2.5)
G (2.5)
n-Butyl acrylate
PS
PS
G (2.8)
G (2.8)
PS
PS
PS
PS
1,4-Dioxane
S
S
S
S
S
S
S
S
Petroleum ether
PS
PS
PS
PS
PS
PS
PS
PS
Ethyl acetate
PS
PS
PS
PS
PS
PS
PS
PS
Chloroform
PS
PS
G (2.5)
G (2.5)
PS
PS
PS
PS
THF
S
S
S
S
S
S
S
S
DMF
S
S
S
S
S
S
S
S
DMSO
S
S
S
S
S
S
S
S
Benzene
G (3.0)
G (3.0)
G (2.8)
G (2.8)
PS
PS
S
S
DMF, dimethylformamide; THF, tetrahydrofuran; DMSO, dimethyl sulfoxide; S: solution; PS: partially soluble; and G: gel; for gels, the critical gelation concentrations at room temperature are shown in parentheses (% w/v).
