| 摘要 |
<p>A dianhydride monomer having a large side chain R is provided. The large sidechain would interrupt the symmetry and regularity of diamine monomer. The diamine monomer has the general formula shown as formula (I). The functional group R includesα-substitution cycloalkene having at least a tertiary carbon atom, cycloalkene having at least a tertiary carbon atom, cycloalkane having 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 adamantyl and adamantyl.</p> |
