A diamine monomer with a large side chain R is provided. The large side chain would interrupt the symmetry and regularity of diamine monomer. The diamine monomer has the general formula shown as formula (V) below:
The functional group R includes α-substitution cycloalkene with at least a tertiary carbon atom, cycloalkene with at least a tertiary carbon atom, cycloalkane with at least a tertiary carbon atom, α-substitution phenyl, phenyl, α-substitution naphthalyl, naphthalyl, α-substitution phenanthrenyl, phenanthrenyl, α-substitution anthracenyl, anthracenyl, α-substitution adamantyl, adamantyl, α-substitution diamantyl and diamantyl.
提供了带有大侧链R的二胺单体。大侧链会打破二胺单体的对称性和规律性。二胺单体的一般公式如下所示:功能基团R包括至少一个三级碳原子的α-取代
环己烯,至少一个三级碳原子的
环己烯,至少一个三级碳原子的
环己烷,α-取代苯基,苯基,α-取代
萘基,
萘基,α-取代
菲基,
菲基,α-取代
蒽基,
蒽基,α-取代
金刚烷基,
金刚烷基,α-取代二
金刚烷基和二
金刚烷基。