A cyclic carbonate monomer has the formula (2):
wherein i) t and t′ are integers independently having a value from 0 to 6 wherein t′ and t cannot both be zero, ii) each Q
1
is a monovalent radical independently selected from the group consisting of hydrogen, halides, alkyl groups comprising 1 to 30 carbons, and aryl groups comprising 6 to 30 carbon atoms, iii) L′ is a divalent linking group comprising one or more carbons, and iv) S′ is a steroidal group.
一个环状
碳酸酯单体的
化学式为(2):其中i) t和t'是整数,其值独立地从0到6,其中t'和t不能同时为零,ii) 每个Q1是单价基团,独立地选自氢、卤素、碳原子数为1到30的烷基基团,以及碳原子数为6到30的芳基基团,iii) L'是一个含有一个或多个碳原子的二价连接基团,iv) S'是一个类
固醇基团。