A method for making a polymer comprising the step of synthesizing a polymer by employing a chain transfer agent having the formula (II)
1
where X and Y are independently selected from oxygen, sulfur, and fully-substituted nitrogen where R
1
and R
2
are independently selected from hydrogen, halogen, or an organic group, with the proviso that at least one of R
1
or R
2
be hydrogen or halogen, R
3
is an organic group, R
4
and R
5
are independently selected organic groups.
一种制备聚合物的方法,包括通过采用具有式(II)的链转移剂合成聚合物的步骤,其中X和Y分别从氧、
硫和全取代氮中独立选择,其中R1和R2分别从氢、卤素或有机基团中独立选择,但至少有一个R1或R2是氢或卤素,R3是有机基团,R4和R5是独立选择的有机基团。