The invention pertains to an isosorbide derivative having at least one polymerizable group, characterized in that the isosorbide derivative further comprises at least one photo-convertible group for adjusting the helical twisting power of the isosorbide derivative. According to a preferred embodiment the isosorbide has the formula
1
wherein
A stands for a bond or a p-phenylene group;
B and B′ are independently O—(CH
2
)
o
O—CO—CR′═CH
2
, o being 2-12 and R′ being H or CH
3
;
P stands for a CH
2
or a C═O group;
Q and Q′ are independently selected from H, C1-C3 alkyl, C1-C3 alkoxy, halogen, and CN;
n is an integer from 1 to 3; and
m is an integer from 0 to 2.
本发明涉及一种具有至少一个可聚合基团的
异山梨醇衍
生物,其特征在于该
异山梨醇衍
生物进一步包含至少一个光转换基团,用于调节
异山梨醇衍
生物的螺旋扭曲功率。根据优选实施方式,
异山梨醇的
化学式为1,其中A代表键或p-苯撑基;B和B′独立地表示O—(
CH2)oO—CO—CR′═ ,其中o为2-12,R′为H或
CH3;P表示 或C═O基团;Q和Q′独立地选择自H、C1-C3烷基、C1-C3烷氧基、卤素和CN;n为1-3的整数;m为0-2的整数。