| 摘要 |
Mesogens having the following general formula: wherein X and Y independently are selected from the group consisting of amino groups, polymerizable groups, and groups having the following general structure: wherein Z is selected from the group consisting of terminal functionalities and polymerizable groups; provided that when X is a polymerizable group, Y is an amino group; R<2 >is a bulky organic group having a bulk greater than R<1 >and R<3 >whereby, when both X and Y are polymerizable groups, said bulk is adapted to provide sufficient steric hindrance to achieve a nematic state at room temperature while suppressing crystallinity at room temperature, thereby providing effective rheology and workability at room temperature; and R<1 >and R<3 >are selected from groups less bulky than R<2 >adapted to maintain said nematic state.
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